【国际标准】BS 4190-2001 ISO 米制的粗制六角螺拴、螺钉和螺母规范.pdf
[国际标准]BS4190-2001ISO米制的粗制六角螺拴、螺钉和螺母规范标准
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国际标准
BS4190
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米制
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[国际标准]BS4190-2001ISO米制的粗制六角螺拴、螺钉和螺母规范标准,国际标准,BS4190,2001,ISO,米制,粗制,六角,螺钉,螺母,规范,标准
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BRITISH STANDARDBS 4190:2001ISO metric black hexagon bolts, screws and nuts SpecificationICS 21.060.10; 21.060.20NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWLicensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIBS 4190:2001This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Committee and comes into effect on 15 February 2001 BSI 02-2001First published October 1967Second edition February 2001The following BSI references relate to the work on this British Standard:Committee reference FME/9Draft for comment 00/711041DCISBN 0 580 33263 2Committees responsible for this British StandardThe preparation of this British Standard was entrusted to Technical Committee, FME/9, bolts, nuts and accessories (+ QA and hose clamps), upon which the following bodies were represented:British Constructional Steelwork Association Ltd.Confederation of British ForgersElectricity AssociationSociety of Motor Manufacturers and Traders LimitedUK Steel AssociationAmendments issued since publicationAmd. No.DateCommentsLicensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-2001iContentsPageCommittees responsible Inside front coverForewordiii1Scope12Normative references13Finish24General dimensions25Length of bolts and screws26Ends of bolts and screws37Screw threads38Length of thread49Nuts Squareness of thread to face610Chamfering and facing611Diameter of shank of bolt812Drilled bolts and split pin holes813Strength grade designation system for steel bolts and screws1014Material and manufacture of steel bolts and screws1015Mechanical properties of bolts and screws1016Strength grade designation system for steel nuts1017Material and manufacture of steel nuts1118Mechanical properties of steel nuts (excluding thin nuts)1119Marking and identification1120Inspection and testing1121Complete designation for the purpose of an enquiry or order12Annex A (normative) Testing of mechanical properties of steel nuts (see clause 18)20Annex B (normative) Sizes greater than 68 mm diameter22Annex C (informative) Manufacturers recommended range of sizes23Figure 1 Rounded end3Figure 2 Rolled thread end3Figure 3 Hexagon head bolt4Figure 4 Hexagon head screw6Figure 5 Head chamfering7Figure 6 Alternative types of normal thickness nut7Figure 7 Thin nut8Figure A.1 Proof load test for nut20Table 1 Product categories2Table 2 Tolerance on nominal length2Table 3 Thread tolerance classes3Table 4 Thread lengths4Table 5 Thread runout (bolts) and underhead distance (screws)5Table 6 Split pin holes9Table 7 Strength grade designations for steel bolts and screws10Table 8 Strength grade designations for steel nuts10Table 9 Recommended bolt and nut combinations11Table 10 Dimensions of ISO metric black hexagon head bolts and screws13Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001ii BSI 02-2001PageTable 11 Dimensions of ISO metric hexagon head bolts and screws faced under head or faced under head and turned on shank14Table 12 Dimensions of ISO metric hexagon nuts and hexagon thin nuts15Table 13 Standard nominal lengths and preferred sizes of ISO metric black hexagon bolts and screws16Table 14 Mechanical properties of steel nuts18Table 15 Chemical composition of steel nuts18Table 16 Proof loads for steel nuts (coarse pitch series)19Table B.1 Sizes greater than 68 mm diameter22Table C.1 Hexagon head bolts23Table C.2 Hexagon head screws24Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-2001iiiForewordThis new edition of BS 4190 has been prepared by Sub-Committee FME/9/6, General purpose fasteners and accessories, on behalf of Technical Committee FME/9, Bolts, nuts and accessories. It supersedes BS 4190:1967, which is withdrawn. This new edition embodies the text of amendment No. 1 (AMD 1778), amendment No. 2 (AMD 2690) and amendment No. 3 (AMD 8226).The need for bolts, screws and nuts covered by this British Standard has been reviewed and it has been decided, in the interests of safety, to delete BS 4190:1967 Tables 14 and 18 (mechanical properties for bolts and screws) and to produce a new edition. In this edition, BS EN ISO 898-1 has been referred to as it reflects current thinking and practice of the mechanical properties for such products. This edition cross-refers to tables for mechanical properties of bolts, and brings the specification into line with BS EN ISO 898-1.Annex A and Annex B are normative. Annex C is informative.It has been assumed in the drafting of this British Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people, for whose guidance it has been prepared.A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 24, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mivblankLicensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-200111 ScopeThis British Standard gives the general dimensions and tolerances of black hexagon bolts, screws and nuts with ISO metric threads, in diameters from 5 mm to 68 mm inclusive. Mechanical properties are included for steel bolts, screws and ordinary plain nuts, which may be produced by hot or cold forging at the option of the manufacturer. Dimensional requirements are included for bolts, screws and nuts finished black all over and for those which have partially machined finishes.NOTE 1The term “black” does not necessarily relate to the appearance of the products, since these may be of bright appearance or black in the finished state. The term implies the comparatively wider tolerances to which these products are usually made.NOTE 2Nuts with an effective height of less than 0.6d or a width across flats or outside diameter of less than 1.45d, or both, are excluded from the mechanical requirements specified in this standard.NOTE 3It is considered that the range of nominal sizes included in this standard is adequate for most of the applications for which this series is likely to be employed but, for the convenience of users requiring larger sizes, further information is provided in Annex C.2 Normative referencesThe following normative documents contain provisions which, through reference in this text, constitute provisions of this British Standard. For dated references, subsequent amendments to or revisions of any of these publications do not apply. For undated references, the latest edition of the publication referred to applies.BS 1916-1:1953, Limits and fits for engineering Part 1: Limits and tolerances.BS 3643-1:1981, ISO metric screw threads Part 1: Principles and basic data.BS 3643-2:1981, ISO metric screw threads Part 2: Limits and tolerances for coarse pitch series threads.BS 3692:2001, ISO metric precision hexagon bolts, screws and nuts Specification.BS 7345:1990 (ISO R 888), Nominal lengths for bolts, screws and studs Thread lengths for general purpose bolts.BS 7371-6:1998, Coatings on metal fasteners Part 6: Specification for hot dipped galvanized coatings.BS EN ISO 4042:2000, Fasteners Electroplated coatings.BS EN 10002-1:1990, Tensile testing of metallic materials Part 1: Method of test at ambient temperature.BS EN 10109-1:1996, Metallic materials Hardness test Part 1: Rockwell test (scales A, B, C, D, E, F, G, H, K) and Rockwell superficial test (scales 15 N, 30 N, 45 N, 15 T, 30 T and 45 T).BS EN 10109-2:1996, Metallic materials Hardness test Part 2: Verification of Rockwell hardness testing machines (scales A, B, C, D, E, F, G, H, K, N, T).BS EN 10109-3:1996, Metallic materials Hardness test Part 3: Calibration of standardized blocks to be used for Rockwell hardness testing machines (scales A, B, C, D, E, F, G, H, K, N, T).BS EN 20286-1:1993, ISO system of limits and fits ISO system of limits and fits Part 1: Specification for uses of tolerances, deviations and fits.BS EN 20286-2:1993, ISO system of limits and fits ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts.BS EN 20898-2:1994, Mechanical properties of fasteners Nuts with specified proof load values Coarse thread.BS EN ISO 1234:1998, Split pins.BS EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs.BS EN ISO 6506-1:1999, Metallic materials Brinell hardness test Part 1: Test method.BS EN ISO 6506-2:1999, Metallic materials Brinell hardness test Part 2: Verification of Brinell hardness testing machines.BS EN ISO 6506-3:1999, Metallic materials Brinell hardness test Part 3: Calibration of reference blocks.BS EN ISO 6507-1:1998, Metallic materials Vickers hardness test Part 1: Test method.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:20012 BSI 02-2001BS EN ISO 6507-2:1998, Metallic materials Vickers hardness test Part 2: Verification of testing machines.BS EN ISO 6507-3:1998, Metallic materials Vickers hardness test Part 3: Calibration of reference blocks.3 FinishThe bolts, screws and nuts shall be cleanly finished, sound and free from defects.NOTE 1Table 1 gives the alternative categories of product finishes dealt with in this standard.Table 1 Product categoriesNOTE 2If the purchaser requires the bolts, screws or nuts to be coated, he should state the type of coating required in his enquiry and order. Where possible, reference should be made to the appropriate British Standard (e.g. BS 7371-6:1998 or BS EN ISO 4042:2000).4 General dimensionsThe general dimensions and tolerances of bolts, screws and nuts shall be in accordance with Table 2, Table 3, Table 4, Table 5, Table 6, Table 10, Table 11, Table 12 and Table 13 and clauses 5 to 10 inclusive.5 Length of bolts and screws5.1 The nominal length of the bolts and screws shall be the distance from the underside of the head to the extreme end of the shank, including any chamfer or radius.NOTEThe standard nominal lengths are given in Table 13.5.2 The permissible tolerance on the nominal length shall be as given in Table 2.Table 2 Tolerance on nominal lengthNon-machined products (finished black all over)Partially machined productsBlack boltsBolts faced under head onlyBolts faced under head and turned on shankBlack screwsScrews faced under head onlyBlack nutsNuts faced under head onlyThin nuts (faced both sides)Dimensions in millimetresLengthBolts faced under head only or black bolts and screwsScrews faced under head only or bolts faced under head and turned on shankOverUp to and including10180.900.5518301.050.6530501.250.8050801.500.95801201.751.101201802.01.251802502.301.452503152.601.603154002.851.804005003.152.00Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-200136 Ends of bolts and screwsThe ends of bolts and screws may, at the option of the manufacturer, be finished with either a 45? chamfer to a depth slightly exceeding the depth of the thread or with a radius approximately equal to 1 times the nominal diameter of the shank. When bolts are made with rolled threads, the lead formed at the end of the bolt or screw by the thread rolling operation may be regarded as providing the necessary chamfer to the end with no other machining operation being necessary, and the end shall be reasonably square with the centre line of the shank. (See Figure 1 and Figure 2.)7 Screw threads7.1 GeneralThe form of thread, diameters and associated pitches of standard ISO metric bolts, screws and nuts shall be in accordance with BS 3643-1.NOTEOnly coarse pitch series threads are specified in this standard.7.2 TolerancesThe tolerances on the screw threads shall be in accordance with BS 3643-2, as detailed in Table 3.Table 3 Thread tolerance classesFigure 1 Rounded endFigure 2 Rolled thread endProductTolerance classBlack boltsBlack screws8g Bolts faced under head onlyScrews faced under head onlyBolts faced under head and turned on shank6gNuts (black or faced)7Hllengthd1 d radius approx./4 1llengthdLicensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:20014 BSI 02-20018 Length of thread8.1 Bolts8.1.1 The length of thread on bolts shall be the distance from the end of the bolt (including any chamfer or radius) to the leading face of a screw ring gauge that has been screwed as far as possible on to the bolt by hand. (See Figure 3.)8.1.2 The standard thread lengths shall be based on the formulae set out in Table 4 in accordance with BS 7375.Table 4 Thread lengths8.1.3 The length of thread runout shall not exceed the values given in Table 5 except where 8.1.4 applies.NOTEWasher face c Alternative at manufacturers option.Figure 3 Hexagon head boltNominal length of bolt Length of threadlbUp to and including 125 mm2d + 6 mmOver 125 mm up to and including 200 mm2d + 12 mmOver 200 mm2d + 25 mm30 kcslrasee Clause 8dwkllengthe rad.45 pdsee Clause 12Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-20015Table 5 Thread runout (bolts) and underhead distance (screws)8.1.4 In order to provide for structural applications, particularly shear connections where the thread is not allowed in the shear plane, bolts in the diameter range M12 to M30 inclusive up to 125 mm nominal length may alternatively have a shorter thread length, equal to 1d, only if the purchaser, in his enquiry and order, states that he requires this shorter thread length.Dimensions in millimetresNominal size and thread diameterdThread runout on boltsaDistance of ring gauge from underside of head on screwsmax.max.M523M62.54M834.5M103.55M1246M1657.5M2069(M22)69M24711(M27)711M30812(M33)812M361015(M39)1015M421116(M45)1116M481218(M52)1218M561920(M60)1920M642122(M68)2122NOTESizes in brackets are non-preferred.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:20016 BSI 02-20018.1.5 Bolts that are too short for minimum thread lengths shall be threaded as screws and shall be designated screws.NOTEGuidance in this respect is given in Table 13.The tolerances on bolt thread lengths shall be plus two pitches for all diameters. 8.2 ScrewsScrews (see Figure 4) shall be threaded to permit a screw ring gauge being screwed by hand to within a distance from the underside of the head not exceeding the values given in Table 5.9 Nuts Squareness of thread to face9.1 The bearing surface of unmachined (black) nuts shall be square to the axis of the thread of the nuts within 2?9.2 The bearing surface of machined nuts shall be square to the axis of the thread of the nuts within 1?10 Chamfering and facing10.1 Bolts and screwsBolt and screw heads shall be chamfered at an angle of approximately 30? on their upper faces. The diameter of the ring formed by the chamfer on the upper face of the bolt or screw head shall not be smaller than 90 % of the minimum across flats dimension. (See Figure 5.) The lower or bearing face shall be machined if specified by the purchaser. A washer face may be provided at the option of the manufacturer.?NOTEWasher face c Alternative at manufacturers option.Figure 4 Hexagon head screw30 kcdwkllengthr rad.See Clause 8.2dLicensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-2001710.2 NutsHexagon nuts shall be chamfered at an angle of approximately 30?, on one or both faces at the option of the manufacturer. The diameter of the ring formed by the chamfer on the nut shall not be smaller than 90 % of the minimum across flats dimension (see Figure 5). The nuts shall be machined on the bearing side if specified by the purchaser unless the purchaser, in his enquiry or order, specifically states that nuts to be “full bearing” or “double chamfered” are required. (See Figure 6.)NOTEAttention is drawn to the fact that these alternative methods of finishing the lower face of the nut are associated both with the nominal size and the particular method of manufacture. A request by the purchaser for a specific type of finish limits the manufacturing processes available, and it is therefore recommended that the purchaser avoids making such a request unless circumstances fully justify it.Figure 5 Head chamferingFigure 6 Alternative types of normal thickness nut30 90% A/F min.30 30 mmsdeLicensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:20018 BSI 02-200110.3 Thin nuts Thin nuts shall be chamfered at an angle of approximately 30? on both faces. (See Figure 7.) The diameter of the ring formed by the chamfer shall not be smaller than 90 % of the minimum across flats dimension. Thin nuts shall be machined on both faces.11 Diameter of shank of bolt11.1 The diameter of the unthreaded portion of the shank of the bolts shall be in accordance with the dimensions given in columns 3 and 4 of Table 10 for black bolts, columns 3 and 4 of Table 11 for bolts faced under head and columns 5 and 6 of Table 11 for bolts faced under head and turned on shank.11.2 The unthreaded portion of the shank on bolts shall be machined only if required by the purchaser in his order.12 Drilled bolts and split pin holes12.1 Bolts with split pin holes shall be supplied only when specially ordered. The purchaser should state in his enquiry and order, dimension lp (see Figure 3) and the diameter of hole required. Table 6 gives the tolerance on dimension lp.12.2 The split pin holes shall be drilled through the centre of the bolt, perpendicular to the axis.Figure 7 Thin nut30 30 tLicensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-20019Table 6 Split pin holesDimensions in millimetresNominal size and thread diameterdTolerance on dimension lp(see Figure 3)M50+0.8M60+0.8M80+0.8M100+0.8M120+0.8M160+1.2M200+1.2(M22)0+1.2M240+1.2(M27)0+1.6M300+1.6(M33)0+1.6M360+1.6(M39)0+1.6M420+1.6(M45)0+1.6M480+1.6(M52)0+1.6M560+1.6(M60)0+1.6M640+1.6(M68)0+1.6NOTE 1Sizes in brackets are non-preferred.NOTE 2For information, refer to BS EN ISO 1234.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:200110 BSI 02-200113 Strength grade designation system for steel bolts and screwsThe strength grade designation system shall be in accordance with BS EN ISO 898-1. It consists of two figures; the first is one-hundredth of the minimum tensile strength in N/mm2, and the second is one-hundredth of the ratio between the minimum yield stress and the minimum tensile strength, expressed as a percentage. Multiplication of these two figures will give the yield stress in newtons per square millimetre.This is illustrated below for strength grade 4.6, in accordance with Table 7. Table 7 shows strength grade designations. minimum tensile strength of 400 N/mm2 gives the symbol “4”. “6”.? Strength grade designation is “4.6”.Table 7 Strength grade designations for steel bolts and screws14 Material and manufacture of steel bolts and screws14.1 Method of productionBolts and screws may be produced by cold forging or hot forging at the discretion of the manufacturer.14.2 Material gradesFor various strengths grades, refer to BS EN ISO 898-1 Table 2.15 Mechanical properties of bolts and screws15.1 Steel bolts and screws shall meet the requirements for mechanical properties given in BS EN ISO 898-1 Table 3 for property classes 4.6, 4.8, 6.8, 8.8 and Mechanical testing shall be in accordance with clause 6 of BS EN ISO 898-1.16 Strength grade designation system for steel nuts16.1 The strength grade designation system for steel nuts shall be a number, which is one-hundredth of the specified proof load stress in N/mm2. The proof load stress corresponds to the minimum tensile strength of the highest grade of bolt or screw with which the nut can be used (see Table 8), dictated by the method of manufacturer or the length of the production, or both.Table 8 Strength grade designations for steel nuts16.2 The mechanical properties of steel nuts are given in Table 14.16.3 It is recommended that the grades of nut to be used with each grade of bolt or screw should be as shown in Table 9.NOTENuts of a higher strength grade may be substituted for nuts of a lower strength grade.Strength grade designation8.810.9Tensile strengthRm min. N/mm24004006008001 000Yield stressRe min. N/mm2240320480640900Strength grade designation4681012Proof load stress N/mm24006008001 0001 2001100 -1100 - ratio yield strengthminimum tensile strength - % 1100 -240400 -1001 - gives the symbol ?=Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-200111Table 9 Recommended bolt and nut combinations17 Material and manufacture of steel nuts17.1 Method of productionSteel nuts may be produced by cold forging, hot forging or by turning from bar. The choice of method shall be left to the manufacturer.17.2 Chemical composition The chemical compositions of the steels from which nuts are made shall conform to those given in Table 15.18 Mechanical properties of steel nuts (excluding thin nuts)Steel nuts (excluding thin nuts) shall conform to the requirements for mechanical properties given in Table 14. The nuts shall withstand the proof load stress given in Table 14 when tested in accordance with Annex A. Nuts that are proof load tested shall have a hardness not in excess of the maximum given in Table 14. Nuts which are not proof load tested shall have a hardness not less than the minimum agreed between the purchaser and the supplier and not more than the maximum given in Table 14. The tests shall be made in accordance with Annex A.19 Marking and identification19.1 Bolts and screws Marking of bolts and screws shall be in accordance with clause 9 of BS EN ISO 898-1.19.2 NutsNuts of grades 8 and 10 shall be marked in accordance with clause 9 of BS EN 20898-2:1994. Nuts of grades 4 and 6 will not normally be marked but, at the option of the manufacturer, nuts turned from hexagon bar may bear the ISO metric symbol “M”, as illustrated in Figure 8.20 Inspection and testing20.1 The manufacturer shall take the necessary steps to ensure that the requirements of this standard are fulfilled, but if, in addition, the purchaser desires the manufacturer to certify or demonstrate that the bolts, screws and nuts conform to this standard, the details and cost of any further inspection entailed shall be the subject of agreement between the purchaser and the manufacturer.20.2 Tests for mechanical properties shall be in accordance with BS EN ISO 898-1 and Annex B.Grade of bolt8.8a8.8a10.9a10.9aRecommended grade of nut4468101012aWhen a thick protective coating is applied to a bolt of grade 8.8 or 10.9, which requires the nut thread to be overtapped, the next higher grade of nut should be used.Figure 8 Example of marking of bar turned nut (optional)Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:200112 BSI 02-200121 Complete designation for the purpose of an enquiry or order21.1 Information to be givenWhen designating ISO metric black bolts, screws and nuts for the purpose of an enquiry or order, the following information shall be given.a) General product description, e.g. “Black bolts”, “Screws faced under head only”, “Black nuts”, etc. as appropriate, in accordance with Table 1.b) The letter “M”, indicating that the product is ISO metric.c) The nominal size (thread diameter) of the product in millimetres.d) The nominal length in millimetres - this applies only to bolts and screws.e) The number of this British Standard, i.e. BS 4190.f) Details of the coating (if required), in accordance with the appropriate British Standard (e.g. BS 7371-6 or BS EN ISO 4042:2000).g) The strength grade. 21.2 Examples of information to be givena) Black bolts 10 mm diameter, 50 mm long, strength grade 4.6, would be designated:“Black bolts M10 ? 50, 4.6 to BS 4190”.b) Screws faced under head only, 8 mm in diameter, 20 mm long, strength grade 4.8, would be designated:“Screws faced under head only, M8 ? 20, 4.8 to BS 4190”.c) Black nuts 24 mm in diameter, galvanized, strength grade 4, would be designated:“Black nuts M24, 4 to BS 4190, galvanized to BS 7371-6”.21.3 Special requirements or optionsSpecial requirements not dealt with in this standard are subject to agreement between the purchaser and the manufacturer. The user options referred to in the standard, relating to the thread length (clause 8) and the drilling of split pin holes (clause 12) shall be specifically set out (if required) by the purchaser in his enquiry and order.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-200113Table 10 Dimensions of ISO metric black hexagon head bolts and screws(see Figure 3 and Figure 4)Dimensions in millimetres12345678910111213Nominal size and thread diameterPitch of thread (coarse pitch series)Diameter of unthreaded shankWidth across flatsWidth across cornersHeight of headRadius under headWasher face dia. (see note 2)Depth of washer faceddsekrdwcmax.min.max.min.max.min.max.min.max.min.max.M50.85.484.528.007.649.28.633.8753.1250.356.80.5M616.485.5210.009.6411.510.894.3753.6250.408.70.5M81.258.587.4213.0012.5715.014.205.8755.1250.811.50.6M101.510.589.4217.0016.5719.618.727.456.550.815.50.6M121.7512.7011.3019.0018.4821.920.888.457.551.2517.20.6M16216.7015.3024.0023.1627.726.1710.459.551.2522.00.8M202.520.8419.1630.0029.1634.632.9513.9012.101.7827.70.8(M22)2.522.8421.1632.0031.0036.935.0314.9013.101.78M24324.8423.1636.0035.0041.639.5515.9014.101.7833.20.8(M27)327.8426.1641.0040.0047.345.2017.9016.102.28M303.530.8429.1646.0045.0053.150.8520.0517.952.2842.70.8(M33)3.534.0032.0050.0049.0057.755.3722.0519.952.28M36437.0035.0055.0053.8063.560.7924.0521.952.751.10.8(M39)440.0038.0060.0058.8069.366.4426.0523.952.7M424.543.0041.0065.0063.8075.172.0927.0524.952.860.81.0(M45)4.546.0044.0070.0068.8080.877.7429.0526.953.3M48549.0047.0075.0073.8086.683.3931.0528.953.870.81.0(M52)553.2050.8080.0078.8092.489.0434.2531.754.7M565.557.2054.8085.0083.6098.194.4736.2533.754.9(M60)5.561.2058.8090.0088.60103.9100.1239.2536.754.9M64665.2062.8095.0093.60109.7105.7741.2538.754.9(M68)669.2062.80100.0098.60115.5111.4244.2541.754.9NOTE 1Sizes in brackets are non-preferred.NOTE 2Calculations of washer face diameters for other sizes may be obtained from the following formulae:1) for sizes up to and including M20:washer face diameter (min.) = smin. IT16;2) for sizes over M20:washer face diameter (min.) = smin. IT17;whereIT stands for standard tolerance, and belongs to the ISO series of tolerances (see BS EN 20286-1 and BS EN 20286-2).Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:200114 BSI 02-2001Table 11 Dimensions of ISO metric hexagon head bolts and screws faced under head or faced under head and turned on shank(see Figure 3 and Figure 4)Dimensions in millimetres1234567891011121314Nominal size and thread diameterPitch of thread (coarse pitch series)Diameter of unthreaded shank dWidth across flatsWidth across cornersHeight of headRadius under headFaced under headFaced under head and turned on shankdseKRmax.min.max.min.max.min.max.min.max.min.max.min. M616.485.526.005.8210.009.6411.510.894.243.760.40.25 M81.258.587.428.007.7813.0012.5715.014.205.745.260.80.4 M101.510.589.4210.009.7817.0016.5719.618.727.296.710.80.4 M121.7512.7011.3012.0011.7319.0018.4821.920.888.297.711.250.6 M16216.7015.3016.0015.7324.0023.1627.726.1710.299.711.250.6 M202.520.8419.1620.0019.6730.0029.1634.632.9513.3512.651.780.8(M22)2.522.8421.1622.0021.6732.0031.0036.935.0314.3513.651.780.8 M24324.8423.1624.0023.6736.0035.0041.639.5515.3514.651.780.8(M27)327.8426.1627.0026.6741.0040.0047.345.2017.3516.652.281.0 M303.530.8429.1630.0029.6746.0045.0053.150.8519.4218.582.281.0(M33)3.534.0032.0033.0032.6150.0049.0057.755.3721.4220.582.281.0 M36437.0035.0036.0035.6155.0053.8063.560.7923.4222.582.71.0(M39)440.0038.0039.0038.6160.0058.8069.366.4425.4224.582.71.0 M424.543.0041.0042.0041.6165.0063.8075.172.0926.4225.582.81.2(M45)4.546.0044.0045.0044.6170.0068.8080.877.7428.4227.583.31.2 M485.049.0047.0048.0047.6175.0073.8086.683.3930.4229.583.81.6(M52)5.053.2050.8052.0051.5480.0078.8092.489.0433.5032.504.71.6 M565.557.2054.8056.0055.5485.0083.6098.194.4735.5034.504.92.0(M60)5.561.2058.8060.0059.5490.0088.60103.9100.1238.5037.504.92.0 M64665.2062.8064.0063.5495.0093.60109.7105.7740.5039.504.92.0(M68)669.2066.8068.0067.54100.0098.60115.5111.4243.5042.504.92.0NOTESizes in brackets are non-preferred.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-200115Table 12 Dimensions of ISO metric hexagon nuts and hexagon thin nuts(see Figure 6 and Figure 7)Dimensions in millimetres123456789101112Nominal size and thread diameterPitch of thread (coarse pitch series)Width across flatssWidth across cornerseThickness of nutmThickness of thin nut (faced both sides)tBlackFaced one sidemax.min.max.min.max.min.max.min.max.min.M50.88.007.649.208.634.3753.6254.03.52M6110.009.6411.5010.895.3754.6255.004.52M81.2513.0012.5715.0014.206.8756.1256.505.925.004.52M101.517.0016.5719.6018.728.457.558.007.426.005.52M121.7519.0018.4821.9020.8810.459.5510.009.427.006.42M16224.0023.1627.7026.1713.5512.4513.0012.309.008.42M202.530.0029.1634.6032.9516.5515.4516.0015.309.008.42(M22)2.532.0031.0036.9035.0318.5517.4518.0017.3010.009.42M24336.0035.0041.6039.5519.6518.3519.0018.1610.009.42(M27)341.0040.0047.3045.2022.6521.3522.0021.1612.0011.30M303.546.0045.0053.1050.8524.6523.3524.0023.1612.0011.30(M33)3.550.0049.0057.7055.3726.6525.3526.0025.1614.0013.30M36455.0053.8063.5060.7929.6528.3529.0028.1614.0013.30(M39)460.0058.8069.3066.4431.8030.2031.0030.0016.0015.30M424.565.0063.8075.1072.0934.8033.2034.0033.0016.0015.30(M45)4.570.0068.8080.8077.7436.8035.2036.0035.0018.0017.30M48575.0073.8086.6083.3938.8037.2038.0037.0018.0017.30(M52)580.0078.8092.4089.0442.8041.2042.0041.0020.0019.16M565.585.0083.6098.1094.4745.8044.2045.0044.00(M60)5.590.0088.60103.90100.1248.8047.2048.0047.00M64695.0093.60109.70105.7751.9550.0551.0049.80(M68)6100.0098.60115.50111.4254.9553.0554.0052.80NOTESizes shown in brackets are non-preferred.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:200116 BSI 02-2001Table 13 Standard nominal lengths and preferred sizes of ISO metric black hexagon bolts and screwsDimensions in millimetresNominal size and thread diameterdStandard nominal lengthsl121416202530354045505560657075808590100110120130140150160170180M5XXXXXXXXXScrews and boltsM6XXXXXXXXXXXXXXXXXXXXXXXM8XXXXXXXXXXXXXXXXXXXXXXXM10XXXXXXXXXXXXXXXXXXXXXXXXXXXM12XXXXXXXXXXXXXXXXXXXXXXXXXM16 XXXXXXXXXXXXXXXXXXXXXXXM20XXXXXXXXXXXXXXXXXXXXXXX(M22)XXXXXXXXXXXXXXXXXXXXXXM24XXXXXXXXXXXXXXXXXXXXXX(M27)XXXXXXXXXXXXXXXXXXXXXM30XXXXXXXXXXXXXXXXXXXXX(M33)XXXXXXXXXXXXXXXXXXXXXM36XXXXXXXXXXXXXXXXXXX(M39)XXXXXXXXXXXXXXXXXXXM42XXXXXXXXXXXXXXXXXX(M45)XXXXXXXXXXXXXXXXXM48XXXXXXXXXXXXXXXXX(M52)XXXXXXXXXXXXXXXM56Screws onlyXXXXXXXXXXXXXXX(M60)XXXXXXXXXXXXXM64XXXXXXXXXXX(M68)XXXXXXXXXXXNOTE 1Sizes shown in brackets are non-preferred.NOTE 2The inclusion of dimensional data in this standard is not intended to imply that all of the products described are stock production sizes. The purchaser is requested to consult with the manufacturer concerning lists of stock production sizes.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-200117Table 13 Standard nominal lengths and preferred sizes of ISO metric black hexagon bolts and screws (concluded)Dimensions in millimetresNominal size and thread diameterdStandard nominal lengthsl190200220240260280300325350375400425450475500M5Screws and boltsM6M8M10XM12XXXXXXM16 XXXXXXM20XXXXXX(M22)XXXXXXM24XXXXXX(M27)XXXXXXXXXXXXXXXM30XXXXXXXXXXXXXXX(M33)XXXXXXXXXXXXXXXM36XXXXXXXXXXXXXXX(M39)XXXXXXXXXXXXXXXM42XXXXXXXXXXXXXXX(M45)XXXXXXXXXXXXXXXM48XXXXXXXXXXXXXXX(M52)XXXXXXXXXXXXXXXM56XXXXXXXXXXXXXXX(M60)XXXXXXXXXXXXXXXM64XXXXXXXXXXXXXXX(M68)XXXXXXXXXXXXXXXNOTE 1Sizes shown in brackets are non-preferred.NOTE 2The inclusion of dimensional data in this standard is not intended to imply that all of the products described are stock production sizes. The purchaser is requested to consult with the manufacturer concerning lists of stock production sizes.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:200118 BSI 02-2001Table 14 Mechanical properties of steel nutsTable 15 Chemical composition of steel nutsStrength grade designation4681012Proof load stressa N/mm24006008001 0001 200All nuts other than those exempted by agreement between the purchaser and manufacturerbBrinell hardness (HB) max.302302302353375All nutsRockwell hardnessc (HRC) max.3030303639All nutsVickers hardness (HV) max.310310310370395All nutsaThe proof load is calculated by multiplying the proof load stress by the tensile stress area of the bolt.bNuts with a specified proof load in excess of 500 000 N (see Table 16) may be exempted from proof load testing. Such nuts shall meet the minimum hardness as agreed between the purchaser and the manufacturer.cThe conversion from Brinell hardness into Rockwell hardness has been calculated according to BS EN ISO 6506-1, -2 and -3 and BS EN 10109-1.Strength grade designationChemical composition limits (check analysis)CarbonPhosphorusSulfurmax.max.max.%4 and 6 (see note)0.500.1100.15080.580.0600.150100.580.0480.058NOTE 1Free cutting steel may be used only by special agreement between the purchaser and the supplier. In such cases, the following maximum phosphorus, sulfur and lead contents are permissible: phosphorus, 0.12 %, sulfur, 0.34 %, lead, 0.35 %.NOTE 2Alloying elements may be added if necessary to develop the mechanical properties of the nuts stipulated in Table 14.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-200119Table 16 Proof loads for steel nuts (coarse pitch series)Strength grade designation4681012Nominal size of nutTensile stress area of boltStress under proof loadN/mm24006008001 0001 200mmmm2Proof loadNM5 14.2 5 680 8 500 11 400 14 800 17 000M6 20.1 8 040 12 000 16 000 20 000 24 000M8 36.6 14 600 22 000 29 000 36 500 43 000M10 58.0 23 200 35 000 46 000 58 000 69 500M12 84.3 33 700 50 500 67 000 84 000100 000M16 157 62 800 94 000 125 000 157 000 188 000M20 245 98 000 147 000 196 000 245 000 294 000M22 303 121 000 182 000 242 000 303 000 364 000M24 353 141 000 212 000 282 000 353 000 423 000M27 459 184 000 276 000 367 000 459 000 550 000M30 561 224 000 336 000 448 000 561 000 673 000M33 694 278 000 416 000 555 000 694 000 833 000M36 817 327 000 490 000 653 000 817 000 980 000M39 976 390 000 585 000 780 000 976 0001 170 000M421 120 448 000 672 000 896 0001 120 0001 340 000M451 300 520 000 780 0001 400 0001 300 0001 560 000M481 470 588 000 882 0001 180 0001 470 0001 760 000M521 760 704 0001 060 0001 410 0001 760 0002 110 000M562 030 812 0001 220 0001 620 0002 030 0002 440 000M602 360 944 0001 420 0001 890 0002 360 0002 830 000M642 6801 072 0001 610 0002 140 0002 680 0003 220 000M683 0601 224 0001 840 0002 450 0003 060 0003 670 000NOTE 1Proof load = stress under proof load ? tensile stress area divided by 1 000.NOTE 2For stress under proof load, see Table 16.NOTE 3Nuts with a specified proof load above 500 000 N may be exempted from proof load testing; see clause 18 and Table 14.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:200120 BSI 02-2001Annex A (normative)Testing of mechanical properties of steel nuts (see clause 18)A.1 Proof load testA.1.1 The proof load test consists of applying the relevant proof load given in Table 16, which was obtained from the proof load stress given in Table 14.A.1.2 Assemble the nut to be tested on a hardened and tempered mandrel as shown in Figure B.1 and apply the specified load in an axial direction.A.1.3 The nut should withstand this load without failure by stripping or rupture, and should be removable by the fingers after the load is released. If the threads of the mandrel are damaged during the test, the test shall be discarded.NOTEIt may be necessary to use a manual wrench to start the nut in motion. Such wrenching is permissible providing it is restricted to a half turn and the nut is then removable by the fingers following initial loosening.A.1.4 Hardened mandrel: The mandrel shall have a hardness of not less than Rockwell C45. The thread shall be tolerance class 5h except that the tolerance on the major diameter shall be the last quarter of the 6g range on the minimum material side.A.1.5 Hardened test plate: The test plate shall have a hardness of not less than Rockwell C38.Figure A.1 Proof load test for nutHardened and tempered test plateD = d with limits to Class D11 (BS 1916)Hardened and tempered mandrelLoaddDdLicensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:2001 BSI 02-200121A.2 Hardness tests on nutsA.2.1 Brinell, Rockwell or Vickers hardness may be determined. Apply the impression to the top or bottom face of the nut, or on the side of the nut.A.2.2 Perform a Brinell hardness test in accordance with the requirements of BS EN ISO 6506-1, -2 and -3.A.2.3 Perform a Rockwell hardness test in accordance with the requirements of BS EN 10109-1, -2 and -3.A.2.4 Perform a Vickers hardness test in accordance with the requirements of BS EN ISO 6507-1, -2 and -3.Licensed copy:PONTYPRIDD COLLEGE, 25/09/2006, Uncontrolled Copy, BSIw w w . b z f x w . c o mBS 4190:200122 BSI 02-2001Annex B (normative) Sizes greater than 68 mm diameterAlthough it is considered that the range of nominal sizes included is adequate for most of the applications for which this series is employed, information is provided in Table B.1 for the convenience of users requiring larger sizes.Table B.1 Sizes greater than 68 mm diameterDimensions in millimetresNominal size and thread diameterdWidth across flatssWidth across cornerseNominal height of headkNominal thickness of nutmmax.min.min.M72105103.60117.074558(M76)110108.60122.724861M80115113.60128.375064(M85)120118.60134.025468M90130128.40145.095772
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