各国标准螺纹基本尺寸对照表

1、WORD完美格式编辑英制管螺纹基本尺寸及公差（牙形角 55o ） BSPP螺纹代号基本直径内螺纹外螺纹大径中径小径中径公差小径公差A级B级中径公差大径公差中径公差大径公差G1/8 "X 289.7289.1478.566+0.170+0.28200-0.1070-0.2140-0.2140-0.214G1/4 " X 1913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250G3/8 " X 1916.66215.80614.950+0.1250+0.44500-0.1250-0.2500-0.2500-0.

2、250G1/2 "X 1420.95519.79318.631+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G5/8 " X 1422.91121.74920.587+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G3/4 " X 1426.44125.27924.117+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G1"X 1133.24931.77030.291+0.1800+0.64000-0.1800-0.3600-0.3600-0.3

3、60G1.1/4 "X 1141.91040.43138.952+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G1.1/2 " X 1147.80346.32444.854+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G2'X 1159.61458.13556.656+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G2.1/2 ” X1175.18473.70572.226+0.2170+0.64000-0.2170-0.4340-0.4340-0.434

4、G3' X1187.88486.40584.926+0.2170+0.64000-0.2170-0.4340-0.4340-0.434G3.1/2 ” X11100.33098.85197.372+0.2170+0.64000-0.2170-0.4340-0.4340-0.434英制锥管螺纹基本尺寸及公差（牙形角 55o ） BSPT螺纹代号基面上的直径基准长度肩效螺纹长度圆锥内螺纹基面轴向位移偏差（土 mr） i大径中径小径基本最大最小基本最大最小R1/8 " X 289.7289.1478.5664.04.93.16.57.45.61.1R1/4 " X 191

5、3.15712.30111.4456.07.34.79.711.08.41.7R3/8 " X 1916.66215.80614.9506.47.75.110.111.48.81.7R1/2 " X 1420.95519.79318.6318.210.06.413.215.011.42.3R3/4 " X 1426.44125.27924.1179.511.37.714.516.312.72.3R1" X 1133.24931.77030.29110.412.78.116.819.114.52.9R1.1/4 " X 1141.91040.43

6、138.95212.715.010.419.121.416.82.9R1.1/2 " X 1147.80346.32444.84512.715.010.419.121.416.82.9R2" X 1159.61458.13556.65615.918.213.623.425.721.12.9R2.1/2 ” X1175.18473.70572.22617.521.014.026.730.223.23.5R3' X1187.88486.40584.92620.624.117.129.833.326.33.5R3.1/2 ” X11100.33098.85197.3722

7、2.225.718.731.434.927.93.5美制管螺纹基本尺寸及公差（牙形角 60o ） UN （F）螺纹代号外螺纹内螺纹公差等级公差等级2A2B大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC螺纹7/16 "X 20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.1131/2 " X 20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.79/16 " X 18UNF14.25214.03113.3351

8、3.22112.57312.75113.08113.37113.5214.2883/4 " X 16UNF19.01218.77317.98117.85417.1217.32317.67818.01918.18419.057/8 " X 14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.2251-1/16 " X 12UN26.94426.65525.5725.42524.42524.68925.14625.61325.80126.9881-5/16 " X 12UN33.2943

9、3.00531.9231.77330.77531.03931.49631.96332.15433.3381-5/8 " X 12UN41.22940.9439.88539.70538.7138.98939.44639.90140.09441.2751-7/8 " X 12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.6252-1/2 " X 12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS螺纹9/16 "

10、X 18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.28811/16 " X 16UN17.42717.18816.39616.27415.53515.74816.10416.43116.58917.46313/16 " X 16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.6381 " X 14UNF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.41-

11、3/16 " X 12UN30.11929.8328.74528.59827.627.86428.32128.78828.97930.1631-7/16 " X 12UN36.46736.17735.09334.94333.94734.21434.67135.13835.33136.5131-11/16 " X 12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.8632" X 12UN50.75450.46549.3849.22548.23548.51448.97149.42649.6

12、2750.8SAE螺纹5/8 " X 18UNF15.83915.61814.92314.80314.16114.35114.68114.95815.1115.8751-1/16 " X 14UN26.94726.68325.74325.60824.7424.96825.37525.78325.96126.987其它美制螺纹9/16 " X 16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8 " X 12UN22.18221.89220.80820.66819.66219.

13、93920.39620.85121.03422.2252-1/4 " X 12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15注：UNC粗牙螺纹系列，UNF细牙螺纹系列，UNEF超细牙螺纹系列，UN /、变螺距系列布锥管螺纹基本尺寸及公差（牙形角60o ） NPT螺纹代号基面上的直径螺纹长度大径中径小径后效长度管端至基面长Z1/8 " X2710.2729.5198.76674.572Z1/4 " X1813.57212.44311.3149.55.080Z3/8 " X1817.0

14、5515.92614.79710.56.096Z1/2 " X1421.22319.77218.32113.58.028Z3/4 " X1426.56825.11723.666148.611Z1" X 11.533.22831.46129.69417.510.160专业资料整理Z1.1/4 "X 11.541.98540.21838.4511810.688Z1.1/2 " X 11.548.05446.28744.52018.510.688Z2"X 11.560.09258.32556.5581911.074公制螺纹基本尺寸及公差（牙

15、形角 60o ） M螺纹代号基本直径内螺纹外螺纹大径中径小径公差等级公差等级6H7H6g中径公差小径公差中径公差小径公差中径公差大径公差M10X1109.3508.917+0.150 0+0.236 0+0.190 0+0.300 0-0.026-0.138-0.026-0.206M12X11211.35010.917+0.160 0+0.236 0+0.200 0+0.300 0-0.026-0.144-0.026-0.206M14X11413.35012.917+0.160 0+0.236 0+0.200 0+0.300 0-0.026-0.144-0.026-0.206M12X1.251

16、211.18810.647+0.180 0+0.265 0+0.224 0+0.335 0-0.028-0.160-0.028-0.240M14X1.251413.18812.647+0.180 0+0.265 0+0.224 0+0.335 0-0.028-0.160-0.028-0.240M12X1.51211.02610.376+0.190 0+0.300 0+0.236 0+0.375 0-0.032-0.172-0.032-0.268M14X1.51413.02612.376+0.190 0+0.300 0+0.236 0+0.375 0-0.032-0.172-0.032-0.26

17、8M16X1.51615.02614.376+0.190 0+0.300 0+0.236 0+0.375 0-0.032-0.172-0.032-0.268M18X1.51817.02616.373+0.190 0+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M20X1.52019.02618.376+0.190 0+0.300 0+0.236 0+0.375 0-0.032-0.172-0.032-0.268M22X1.52221.02620.376+0.190 0+0.300 0+0.236 0+0.375 0-0.032-0.172-0.032

18、-0.268M24X1.52423.02622.376+0.200 0+0.300 0+0.250 0+0.375 0-0.032-0.182-0.032-0.268M26X1.52625.02624.376+0.2000+0.3000+0.250 0+0.3750-0.032-0.182-0.032-0.268M27X1.52726.02625.376+0.2000+0.3000+0.2500+0.3750-0.032-0,182-0.032-0,268M30X1.53029.02628.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.

19、268M33X1.53332.02631.376+0.200 0+0.300 0+0.250 0+0.375 0-0.032-0.182-0.032-0.268M36X1.53635.02634.376+0.2000+0.3000+0.2500+0.3750-0.032-0 182-0.032-0 268M39X1.53938.02637.376+0.2000+0.3000+0.2500+0.3750-0.0320 182-0.0320 268M42X1.54241.02640.376+0.200nxj+0.300n+0.250n+0.375 n.-0.032n 4QO.-0.032M27X2

20、2725.70124.8350 +0.22400 +0.37500 +0.28000 +0.47500.182-0.038-0.208-0.268-0.038-0.318M30X23028.70127.835+0.2240+0.3750+0.2800+0.4750-0.0380 208-0.0380 318M33X23331.70130.835D +0.2240+0.3750u+0.2800u+0.4750-U.UO-0.0380 208-U. O 1 o-0.0380 318M36X23634.70133.8350 +0.224n0 +0.375n0 +0.280n0 +0.475-0.20

21、8-0.0380.318-0.038n Q4 oM39X2M42X2394237.70140.70136.83539.8350 +0.2240+0.224n0 +0.3750+0.375H0 +0.2800+0.280n0 +0.4750+0.475n-0.208-0.038-0.208-0.038-0.3 18-0.038-0.318-0.038M45X24543.70142.8350 +0.224n_0 +0.3750 +0.280r0 +0.475n-0.208-0.038r ono-0.318-0.038n q d oM52X25250.70149.8350 +0.2360 +0.37

22、50 +0.3000 +0.475-0.208-0.038-0.318-0.038M60X2M64X2606458.70162.70157.83561.8350 +0.2360+0.2360 +0.3750+0.3750 +0.3000+0.3000 +0.4750+0.475-0.218-0.038-0.218-0.038-0.318-0.038-0.318-0.038M72X27270.70169.835+0.236 0+0.3750+0.3000+0.475 0-0.038-0.218-0.038-0.31855。圆锥管螺纹基本尺寸对照表最新下载-汇兴达55。圆锥管螺纹基本尺寸对照表最新

23、下载-汇兴达55 °圆锥管螺纹（BSPT）螺基本距每中径小螺尺寸大径mmmm径牙型高度英寸牙数纹代号英寸mm d=Dtpid2=外螺纹H1PD2d3R11/167.70.97.16./II23072842560.581116R8.11/8”9.70.9289.1560.581/28074768R1111/4”13.1.31912.40.8561433/8"16.1.31915.90.856/662378065081/2"20.141.162R11.819.181/295514793.631R2433/4”26.1.81425.11.162

24、/4411427917430R1"33.2.31131.21.4791249097791R1141.2.340.3811/4"9100911431.91.479/524R1147.2.346.4411/2”8030911324.81.479/45256R2"59.2.31158.61.47926140913556R2275.2.373.7211/2"1840911705.21.479/26284R3"87.2.31186.91.4793884094052611113111R4".032.311.550.1.47940091072131

25、38136R5".432.311.955.1.4795009147216163162R6".832.311.350.1.47960091872聊城市鑫茂祥管业有限公司专业经营钢管规格：5mm*1m 1020mm*200m 合金钢管、外径22mm-127mr 冷轧无缝钢管、外径127mm-600mm 壁厚16mm-100mi ,外径精度± 0.5%,壁厚精度土 5潦轧中厚壁无缝钢管、16Mn外径400 1600mm 壁厚20 60mm的大口径厚壁卷管，可定尺到16米及各种规格的无缝方管、异型无缝钢管等.常备钢管种类有：构造用无缝钢管、流体用无缝钢管、液压无缝钢管、电

26、力用无缝钢管、 石油输送用无缝钢管、化肥设备用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管，精密无缝钢管、光亮无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。适用于工程、煤矿、纺织、电力、锅炉、机械、军工等各个领域。公司以良好的信用、优质的产品、雄厚的实力、低廉的价钱享誉全国30多个省、市、自治区、直辖市及国外，产品深得用户依赖。管螺纹的基本尺寸表(2010-10-25 15:57:35 )转载王标签：杂谈（单位:mm ）表(1 )螺纹基本尺寸G1/2、ZG1/2尺寸代口 勺每25.4

27、mm类的牙 数n螺距p牙型高度h圆弧半径r 基面上的基本宜径大径（基 准宜径）d=D中径d2=D2小径d1=D1基准距离有效螺纹长度1/16280.9070.581 0.1257.7237.1426.5614.06.51/828 0.9070.581 0.1259.7289.1478.5664.06.5 n1/43/8191.3370.586 0.18413.15712.30111.4456.09.7 n191.3370.586 0 .18416.66215.80614.9506.410.11/2141.8141.162 0 .24920.95519.79318.6318.213.23/414

28、1.8141.162 0 .24926.44125.27924.1179.514.5H1112.3091.479 0 .31733.24931.77030.29110.416.81.1/4112.3091.479 0.31741.91040.43138.95212.719.11.1/2112.3091.479 0 .：，1747.80346.32444.84512.719.1 J22.1/2112.3091.479 0 .：，1759.61458.13556.65615.923.4 J112.3091.479 0 .：，1775.18473.70572.22617.526.73112.3091

29、.479 0.31787.88486.40584.92620.629.83.1/2 二112.3091.479 0 .：，17100.33098.85197.37222.231.4 n45112.3091.479 0 .：，17113.030111.551110.07225.435.8 n112.3091.479 0 .：，17138.430136.951135.47228.640.16112.3091.479 0.317163.830162.351160.87228.640.1锥管螺纹的基本尺寸表（3-28 ） 1/2PT、1/2NPT表（2）螺纹基本尺寸（单位:mm ）尺寸代 号每25.4

30、mm类的牙 数n基面上的基本宜径基准距离大径（基准宜径）d=D中径d2=D2小径d1=D11/16 12717.8957.1426.3894.0641/82710.2429.4898.7364.1021/41813.61612.48711.3585.7863/8 一1817.05515.92614.7976.0961/21421.22319.77218.3218.1283/41426.56825.11723.6668.611111.533.22831.46129.69410.1601.1/411.541.98540.21838.45110.6681.1/211.548.05446.28744.

31、52010.6682 111.560.09258.32556.55811.0742.1/2872.69970.15967.61917.3233888.60886.06883.52819.4563.1/28101.31698.776 196.23620.85348113.973111.433108.89321.438螺纹标准的一种，按外形分圆柱、圆锥两种；按牙型角分55°、60°两种。螺纹中的1/4、1/2、1/8标记是指螺纹尺寸的直径，单位是英寸。一时等于8分，1/4时就是2分，如此类推。国外常用英制螺纹的代号、名称和标准号：B.S.W.标准惠氏粗牙系列，一般用途圆柱螺纹B

32、.S.F.标准惠氏细牙系列，一般用途圆柱螺纹Whits附加的惠氏可选择系列，一般用途圆柱螺纹Whit惠氏牙型的非标准螺纹以上为英国标准 BS84牙型角为55°的英制螺纹UN恒定螺距系列的统一螺纹UNC粗牙系列的统一螺纹UNF细牙系列的统一螺纹UNEF超细牙系列的统一螺纹UNSD特殊系列的统一螺纹UNR圆弧牙底恒定螺距系列的统一螺纹UNRC圆弧牙底粗牙系列统一螺纹UNRF圆弧牙底细牙系列统一螺纹UNREF圆弧牙底超细牙系列统一螺纹UNRS圆弧牙底特殊系列统一螺纹以上为美国标准 ANSIB1.1标准牙型（牙底是平的或随意倒圆的）的内、外螺纹 圆弧牙底的UNR UNRCUNRF UNRE

33、F NRS只用于外螺纹而没有内螺纹NPT一般用途的锥管螺纹NPSC管接头用直管螺纹NPTR导杆连接用锥管螺纹NPSM机械连接用直管螺纹NPSL锁紧螺母用直管螺纹NPSH软管连接用直管螺纹以上为美国标准 ANSIB1.20.1牙型角为60°的英制管螺纹NPTF干密封标准型锥管螺纹美国标准 ANSIB1.20.3 I型PTF-SAE SHORT干密封短型锥管螺纹美国标准ANSIB1.20.3 n型NPSF干密封标准型燃油用直管内螺纹美国标准ANSIB1.20.3川型NPS1干密封标准型一般用直管内螺纹美国标准ANSIB1.20.3 W 型ACM一般用途的梯形螺纹美国标准ANSIB1.5牙

34、型角为29。的英制传动螺纹 尺寸和公差使用与标准系列相同的公式计算的标准系列之外的所有直径与螺距组合 我国的60°圆锥管螺纹GB/T12716-1991与之等效。ACME !纹包括一般用途的和定心的两种配合的梯形螺纹，其中一般用途者与我国标准GB/T5796-1986规定的梯形螺纹的性能相类同。螺距用每英寸的牙数来表示，如：每英寸 11牙，则螺距= 25.4/11 = 2.309mmWORD完美格式编辑WORD完美格式编辑螺纹如何区分英制和公制？默认分类2009-08-24 22:03:14 阅读1281评论0字号：大中小粗略判断的话好像英制的比公职的牙距大(同规格的)NPT PT

35、, G都是管螺纹.NPT是National(American) Pipe Thread 的缩：W,匾於美国襟准的60度锥管螺纹，用於北美地展.国家襟准可查阅GB/T12716-1991PT是Pipe Thread的缩是55度密封圄锥管螺纹，匾惠氏螺触家族，多用於欧洲及英联邦国 家.常用於水及煤气管行业，锥度规定为1:16 .国家襟准可查阅GB/T7306-2000G是55度非螺纹密封管螺纹，匾惠氏螺触家族.标记为G代表圄柱螺触.国家襟准可查阅GB/T7307-2001另外螺纹中的1/4、1/2、1/8标记是指螺触尺寸的直彳困，军位是英时.行内人通常用分来耦呼螺触尺寸，一时等於8分， 1/4 时

36、就是2分，如此推RcZG俗称管锥，即螺纹由一圆G好像就是管螺纹的统称(Guan) , 55,60度的划分属于功能性的，俗称管圆。即螺纹由一圆柱面加工而成锥面加工而成，一般的水管接头都是这样的，老国标标注为 公制螺纹用螺距来表示，美英制螺纹用每英寸内的螺纹牙数来表示，这是它们最大的区别,公制螺纹是60度等边牙型，英制螺纹是等腰55度牙型，美制螺纹 60度。公制螺纹用公制单位,美英制螺纹用英制单位。专业资料整理直径，显然螺纹大径比公称管螺纹主要用来进行管道的连接，其内外螺纹的配合紧密，有直管与锥管两种。公称直径是指所连接的管道 直径大。1/4 , 1/2 ,1/8是英制螺纹的公称直径，单位是英寸。

37、英制螺纹标准规格表大径螺距中径小径寸牙型代号mmmm每英寸牙数mm外螺纹牙型高底扎直在Wwd=DPtpid2=D2d3H1mm1/16"BSW1.5870.423601.3151.0500.2701.153/32”BSW2.3810.529482.0411.7030.3381.901/8”BSW3.1750.635402.7682.3620.4062.505/32”BSW3.9690.793323.4592.9520.5073.203/16"BSW4.7621.058244.0843.4070.6773.707/32”BSW5.5561.058244.8784.2010.6

38、774.501/4"BSW6.3501.270205.5374.7240.8135.105/16"BSW7.9381.411187.0346.1310.9046.503/8”BSW9.5251.588168.5097.4921.0177.907/16"BSW11.1131.814149.9518.7891.1629.201/2"BSW12.7002.1171211.3459.9901.35510.405/8"BSW15.8762.3091114.39712.9181.47913.403/4"BSW19.0512.5401017.424

39、15.7981.62716.257/8"BSW1"BSW22.2262.822925.4003.175820.41918.6111.80719.2523.36821.3352.03322.0011/8BSWI!1/4BSWI!3/8BSWI!1/2BSWI!5/8BSWI!3/4BSWI!7/8BSWI!2”BSW1/4BSWI!1/2BSWI!3/4BSWI!3"BSW1/4BSWI!1/2BSWI!3/4BSWI!4"BSW1/4BSWI!1/2BSWI!3/4BSWI!5"BSW1/4BSWI!1/2I!BSW3/4BSWI!6”BSW2

40、8.5763.629726.25323.9292.32424.5031.7513.629729.42827.1042.32427.2534.9264.233632.21529.5052.71130.2538.1004.233635.39132.6802.71133.5041.2775.080538.02434.7713.25335.5044.4525.080541.19937.9463.25338.5047.6275.64541/244.01240.3983.61441.2550.8025.64541/247.18743.5733.61444.5057.1526.350453.08649.02

41、04.06650.0063.5026.350459.43655.3704.06656.0069.8537.25731/265.20560.5584.64761.5076.2037.25731/271.55666.9094.64768.0082.5537.81631/477.54872.5445.00573.7588.9037.81631/483.89978.8945.00580.0095.2548.467389.83284.4105.42285.50101.604 8.467396.18290.7605.42292.00107.954 8.83527/8102.297 96.6395.6579

42、8.00114.304 8.83527/8108.647 102.990 5.657104.20120.665 9.23723/4114.740 108.625 5.915110.00127.005 9.23723/4121.090 115.176 5.915116.50133.355 9.67725/8127.159 120.963 6.196122.50139.705 9.67725/8133.509 127.313 6.196128.50146.055 10.160 21/2139.549 133.043 6.506134.50152.406 10.160 21/2145.900 139

43、.394 6.506141.00英制普通螺纹-细牙-BSF英制普通螺纹(惠氏螺纹)-细牙(BSW)名义尺寸BSF牙型代号大径mmd=D螺距每英寸牙数mmtpiP中径mmd2=D2小径除祸八牙型图外螺纹H1d3底孔直径mm3/16BSF4.7630.794 324.2553.7470.5084.007/32BSF5.5560.907 284.9754.3940.5814.601/4BSF6.3500.977 265.7255.1000.6255.309/32BSF7.1420.977 266.5185.8930.6256.105/16BSF7.9381.156 227.1996.4590.7396.803/8BSF9.5251.27208.7127.8990.