小五金工程评估办法说明

75/76目录螺钉．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．61.1螺纹标志及尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．61.1.1米制细牙螺纹．．．．．．．．．．．．．1.1.2米制粗牙螺纹．．．．．．．．．．．．．．1.1.3英制细牙螺纹．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．81.1.4英制粗牙螺纹．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．91.2通孔孔径．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．101.3攻螺纹孔孔径．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．111.3.1米制细牙螺纹．．．．．．1.3.2米制粗牙螺纹．．．．．．1.3.3英制细牙螺纹．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．121.3.4英制粗牙螺纹．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．131.3.5板材上孔与板边间距．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．13配合尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．13机械性能．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．13钢板厚度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．14专门螺钉．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．15自攻螺钉．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．15硬化层深度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．15硬度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．16尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．16工作扭力．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．17结合比与预冲孔呎寸关系．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．18钢板孔径及抽牙高．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．191.7.2塑料螺钉．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．201.7.2.1螺纹形状．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．201.7.2.2硬度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．211.7.2.3螺纹呎寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．211.7.3浮动螺钉．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．211.7.3.1浮动螺钉形状．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．211.7.3.2差不多要求．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．211.8螺钉验证方法．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．22资料：．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．23螺钉常见穴型简介．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．23常用板材硬度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．23电镀层．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．23螺母．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．242.1制造材料．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．242.1.1材料牌号．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．242.1.2材质化学成份．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．242.1.3机械性能．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．242.1.4螺母材料的选取．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．242.2尺寸及公差．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．252.2.1型号为“S.SS.CLS以及CLSS”的自铆螺母尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．252.2.2型号为SP,专用于不锈钢冲压板件上的自铆螺母尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．282.2.3型号为H,HN,HNL之易削钢制自锁和防锁螺母的尺寸．．．．．．．．．．．．．．．．．．．．．．．．．302.2.4型号为F的自铆螺母尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．302.2.5尺寸公差．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．322.3压铆要求．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．32配合呎寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．35螺母验证方法．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．35螺柱．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．363.1制造螺柱材料．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．363.1.1材料牌号．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．363.1.2化学成份．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．363.1.3机械性能．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．363.1.4螺柱材料的选取．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．373.2尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．373.2.1型号为“SO.SON.SOA.SOS.”的通孔螺柱．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．373.2.1.1一般尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．383.2.1.2螺纹规格和螺柱长度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．393.2.2型号为“BSO.BSON.BSOA.BSOS.”的盲孔螺柱．．．．．．．．．．．．．．．．．．．．．．．．．．．．．403.2.2.1一般尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．403.2.2.2螺纹规格和螺柱长度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．413.3公差．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．43压铆要求．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．43螺柱验证方法．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．44支柱．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．454.1型号为“SO.SON.SOA.SOS”的通孔支柱．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．454.1.1材料牌号．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．454.1.2材质化学成份．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．454.1.3机械性能．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．454.1.4螺柱材料的选取．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．464.1.5一般尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．464.1.6支柱规格和支柱长度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．474.1.7公差．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．494.2其它异型支柱．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．494.2.1制造材料．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．494.2.2尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．494.2.3板材厚度及孔径．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．514.3压铆要求．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．514.4支柱验证方法．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．525.拉钉．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．535.1拉钉制造材料．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．545.2尺寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．545.3拉钉验证方法．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．556.弹簧．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．566.1弹簧制造材料．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．566.2弹簧钢丝呎寸．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．566.2.1制造弹簧用不锈钢钢丝标准直径．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．566.2.2标准钢丝尺寸偏差．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．576.3弹簧自由长度．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．576.4弹簧外径D．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．576.5弹簧的总圈数．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．576.6弹簧的方向．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．576.7弹簧验证方法．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．．57螺钉定义：由头部和螺杆两部份构成的一类紧固件．本手册中包括的螺钉要紧有机械螺钉、自攻螺钉、塑料螺钉和浮动螺钉等．机械螺钉：由头部和螺杆两部份构成的一类金属紧固件﹒要紧用于一个带有内螺纹孔的零件与带有通孔的零件之间的紧固联接，不需要螺母配合；也用于带有通孔的零件之间的紧固联接，但要与螺母配合﹒属可拆卸连接．自攻螺钉：由头部和螺杆两部份构成的一类金属紧固件，但螺杆上的螺纹为专用的自攻螺钉用螺纹﹒用于紧固联接两个薄的金属构件，使之成为一体，构件上需事先制出小孔﹒这种螺钉具有较高的硬度，可直接旋入构件的孔中，使构件孔中形成相应的内螺纹﹒塑料螺钉：由头部和螺杆两部份构成的一类金属紧固件，但螺杆上的螺纹为专用的塑料螺钉用螺纹﹒可直接旋入塑料件中，用于把一个带通孔的金属(或非金属)零件与一个塑料件紧固联接在一起﹒浮动螺钉：压铆于冲件预制孔内,用于经常拆装之冲压件的把手螺钉,其结构特点是螺钉本体内包含弹性体．螺纹标志及尺寸(除非特不指明，适用于所有的螺钉、螺母和螺柱)螺纹分为外螺纹和内螺纹两种，一般螺钉为外螺纹形式，螺母或螺柱为内螺纹形式，常用的螺纹如图示．H：原始三角形高度P：螺距D：内螺纹公称直径d：外螺纹公称直径H1：螺纹牙高D2：内螺纹中径D1：内螺纹小径d2：外螺纹中径d1：外螺纹小径n为每英寸牙数．1.1.1H=0.866025Pd2=d-0.649519PD=dH1=0.541266Pd1=d-1.082532PD2=d2D1=d1单位mm螺纹标志PH1d(D)d2(D2)d1(D1)M1×0.20.20.1081.0000.8700.783M1.1×0.20.20.1081.1000.9700.883M1.2×0.20.20.1081.2001.0700.983M1.4×0.20.20.1081.4001.2701.183M1.6×0.20.20.1081.6001.4701.383M1.8×0.20.20.1081.8001.6701.583M2×0.250.250.1352.0001.8381.729M2.2×0.250.250.1352.2002.0381.929M2.5×0.350.350.1892.5002.2732.121M3×0.350.350.1893.0002.7732.621M3.5×0.350.350.1893.5003.2733.121M4×0.50.50.2714.0003.6753.459M4.5×0.50.50.2714.5004.1753.959M5×0.50.50.2715.0004.6754.459M5.5×0.50.50.2715.0005.1754.959M6×0.750.750.4066.0005.5135.1881.1.2H=0.866025Pd2=d-0.649519PD=dH1=0.541266Pd1=d-1.082532PD2=d2D1=d1单位mm螺纹标志PH1d(D)d2(D2)d1(D1)M10.250.1351.0000.8380.729M1.10.250.1351.1000.9380.829M1.20.250.1351.2001.0380.929M1.40.30.1621.4001.2051.075M1.60.350.1891.6001.3731.221M1.80.350.1891.8001.5731.421M20.40.2172.0001.7401.567M2.20.450.2442.2001.9081.713M2.50.450.2442.5002.2082.013M30.50.2713.0002.6752.459M3.50.60.3253.5003.1102.850M40.70.3794.0003.5453.242M4.50.750.4064.5004.0133.688M50.80.4335.0004.4804.134M610.5416.0005.3504.9171.1.3英制细牙螺纹P=25.4÷nH=0.866025Pd=(d)×25.4D=dH1=0.541266Pd2=(d-0.649519/n)×25.4D2=d2d1=(d-1.082532/n)×25.4D1=d1单位mm螺纹标志(Reference)nPH1d(D)d2(D2)d1(D1)No.0-80UNF0.0600-80UNF800.31750.1721.5241.3181.181No.1-72UNF0.0730-72UNF720.35280.1911.8541.6261.473No.2-64UNF0.0860-64UNF640.39690.2152.1841.9281.755No.3-56UNF0.0990-56UNF560.45360.2462.5152.2202.024No.4-48UNF0.1120-48UNF480.52920.2862.8452.5022.271No.5-44UNF0.1250-44UNF440.57730.3123.1752.7992.550No.6-40UNF0.1380-40UNF400.63500.3443.5053.0942.817No.8-36UNF0.1640-36UNF360.70560.3824.1663.7083.401No.10-32UNF0.1900-32UNF320.79380.4304.8264.3104.967No.12-28UNF0.2160-28UNF280.90710.4915.4864.8974.5031.1.4英制粗牙螺纹P=25.4÷nH=0.866025Pd=(d)×25.4D=dH1=0.541266Pd2=(d-0.649519/n)×25.4D2=d2d1=(d-1.082532/n)×25.4D1=d1单位mm螺纹标志(Reference)nPH1d(D)d2(D2)d1(D1)No.1-64UNC0.0730-64UNC640.39690.2151.8541.5981.425No.2-56UNC0.0860-56UNC560.45360.2462.1841.8901.694No.3-48UNC0.0990-48UNC480.52920.2862.5152.1721.941No.4-40UNC0.1120-40UNC400.63500.3442.8452.4332.156No.5-40UNC0.1250-40UNC400.63500.3443.1752.7642.487No.6-32UNC0.1380-32UNC320.79380.4303.5052.9902.647No.8-32UNC0.1640-32UNC320.79380.4304.1663.6503.307No.10-24UNC0.1900-24UNC241.05830.5734.8264.1383.680No.12-24UNC0.2160-24UNC241.05830.5735.4864.7984.3411.2通孔孔径螺钉连接零件上预制之通孔如图示：通孔孔径之尺寸如下表(单位mm)：螺钉公称直径通孔直径(d)mm1级2级3级4级11.11.21.31.21.31.41.51.41.51.61.81.61.71.821.71.822.11.82.02.12.222.22.42.62.22.42.62.82.32.52.72.92.52.72.93.12.62.833.233.23.43.63.53.73.94.244.34.54.85.54.54.855.3655.35.55.86.566.46.677.81.3攻螺纹孔孔径与螺钉相配的螺纹攻丝孔孔径取决于外内螺纹结合比之大小．螺纹结合比(%)=[(螺钉公称直径-攻丝孔直径)÷(2×螺纹结合高度)]×100(%)1.3.1米制细牙螺纹(螺纹标志公称直径螺纹结合比(%)1009590858075706560M11.0000.780.790.810.820.830.840.850.860.87M1.11.1000.880.890.910.920.930.940.950.960.97M1.21.2000.980.991.011.021.031.041.051.061.07M1.41.4001.181.191.211.221.231.241.251.261.27M1.61.6001.381.391.411.421.431.441.451.461.47M1.81.8001.581.591.611.621.631.641.651.661.67M22.0001.731.741.761.771.781.801.811.821.84M2.22.2001.931.941.961.971.982.002.012.022.04M2.52.5002.122.142.162.182.202.222.242.252.27M33.0002.622.642.662.682.702.722.742.752.77M3.53.5003.123.143.163.183.203.223.243.253.27M44.0003.463.493.513.543.573.593.623.653.68M4.54.5003.963.994.014.044.074.094.124.154.18M55.0004.464.494.514.544.574.594.624.654.68M5.55.5004.964.995.015.045.075.095.125.155.18M66.0005.195.235.275.315.355.395.435.475.511.3.2米制粗牙螺纹(螺纹标志公称直径1009590858075706560M11.0000.730.740.760.770.780.800.810.820.84M1.11.1000.830.840.860.870.880.900.910.920.94M1.21.2000.930.940.960.970.981.001.011.021.04M1.41.4001.081.091.111.121.141.161.171.191.21M1.61.6001.221.241.261.281.301.321.331.351.37M1.81.8001.421.441.461.481.501.521.531.551.57M22.0001.571.591.611.631.651.681.701.721.74M2.22.2001.711.741.761.791.811.831.861.881.91M2.52.5002.012.042.062.092.112.132.162.182.21M3*0.53.0002.462.492.512.542.572.592.622.652.68M3.53.5002.852.882.922.952.983.013.053.083.11M4*0.74.0003.243.283.323.363.393.433.473.513.55M4.54.5003.693.733.773.813.853.893.933.974.01M5*0.85.0004.134.184.224.264.314.354.394.444.48M66.0004.924.975.035.085.135.195.245.305.351.3.3英制细牙螺纹(单位mm)螺纹标志公称直径1009590858075706560No.0-80UNF1.5241.181.201.211.231.251.271.281.301.32No.1-72UNF1.8541.471.491.511.531.551.571.591.611.62No.2-64UNF2.1841.751.781.801.821.841.861.881.901.93No.3-56UNF2.5152.022.052.072.102.122.152.172.202.22No.4-48UNF2.8452.272.302.332.362.392.422.442.472.50No.5-44UNF3.1752.552.582.612.642.682.712.742.772.80No.6-40UNF3.5052.822.852.892.922.962.993.023.063.09No.8-36UNF4.1663.403.443.483.523.553.593.633.673.71No.10-32UNF4.8263.974.014.054.104.144.184.224.274.31No.12-28UNF5.4864.504.554.604.654.704.754.804.854.901.3.4英制粗牙螺纹(单位mm)螺纹标志公称直径1009590858075706560No.1-64UNC1.8541.421.451.471.491.511.531.551.571.60No.2-56UNC2.1841.691.721.741.771.791.821.841.861.89No.3-48UNC2.5151.941.972.002.032.062.092.112.142.17No.4-40UNC2.8452.162.192.232.262.302.332.362.402.43No.5-40UNC3.1752.492.522.562.592.632.662.692.732.76No.6-32UNC3.5052.652.692.732.772.822.862.902.952.99No.8-32UNC4.1663.313.353.393.443.483.523.563.613.65No.10-24UNC4.8263.683.743.793.853.913.974.024.084.14No.12-24UNC5.4864.344.404.454.514.574.634.684.744.801.3.5板材上孔与板边间距(对所有螺钉适用)板材上螺纹孔与板边间距如图要求b≧2t(b为孔与板边的距离，t为板材厚度)1.4配合尺寸同种规格的螺钉需与同种规格螺纹的螺母或与预攻同规格螺纹孔的钢板配合．如对M3的螺钉需与M3的螺母相配合，或者与在钢板上攻出M3的螺纹孔相配合．1.5机械性能(包括材质与热处理)一般用C<0.20%的低碳钢制造，拉伸强度要求不小于330MPa；硬度不小于95HV(90HB或52HRB)；屈服强度不小于190MPa；延伸率不小于25%．部分螺钉拉力如下表：螺纹标志M1.6M2M2.2M2.5M3M3.5M4M5M6最小拉力(N)4206206801120166022402900469066301.6钢板厚度(取决于螺钉与内螺纹的结合长度，钢板厚度应大于实际螺纹要求之旋合长度，单位mm)螺纹标志旋合长度＞≦M10.61.7M1.10.61.7M1.20.61.7M1.40.72M1.60.82.6M1.80.82.6M21.03M2.21.33.8M2.51.33.8M31.54.5M3.51.75M426M4.52.26.7M52.27.5M639M1×0.20.51.4M1.1×0.20.51.4M1.2×0.20.51.4M1.4×0.20.51.4M1.6×0.20.51.5M1.8×0.20.51.5M2×0.250.61.9M2.2×0.250.61.9M2.5×0.350.82.6M3×0.3513M3.5×0.3513M4×0.51.54.5M4.5×0.51.54.5M5×0.51.54.5M5.5×0.51.54.5M6×0.752.47.1注：对薄材，钢板厚度至少应大于2~3个螺距．1.7专门螺钉1.7.1自攻螺钉1.7.1.1硬化层深度一般应进行表面硬化处理．表面渗碳或碳氮共渗层深度如下表(单位mm)：螺纹标志硬化层深度MinMax1-642-563-480.040.104-405-406-320.050.188-3210-2412-240.100.231.7.1.2表面渗碳或碳氮共渗处理后硬度之一般要求：表面硬度不小于45HRC[或450HV]芯部硬度26~40HRC[270~390HV]1.7.1.3尺寸自攻螺钉截面应为弧形三角形，如图(L为导引长度，a为收尾长度)．C、D值如下表．(单位inch)螺纹标志CDMaxMinMaxMin00-900.04810.04610.04590.04390-800.06130.05930.05880.05681-640.07450.07250.07100.06902-560.08750.08400.08400.08053-480.10100.09750.09700.09354-400.11450.11150.10950.10605-400.12750.12400.12250.11906-320.14100.13600.13500.13008-320.16700.16200.16100.156010-240.19400.18900.18500.180010-320.19300.18800.18700.182012-240.22000.21500.21100.2060．对螺纹长度大于1/6inch，L应为2~3个螺距；对螺纹长度小于1/6inch，L应为1~2个螺距．．对螺纹收尾长度应小于1个螺距．1.7.1.4工作扭力对不同厚度钢板及预制孔，自攻螺钉之工作扭力如下表(单位lbf．inch)：螺纹标志钢板厚(inch)孔径(inch)攻牙扭力第一次拆卸扭力攻螺纹后安装扭力破坏扭力2-560.04690.07540.5~11~26~70.06250.07640.5~11~28~100.09380.07950.5~11~211~143-480.06250.08761~23~414~150.09380.08971~23~515~160.12500.09071~24~615~184-400.03120.09861~22~38~110.06250.10291~23~415~180.09380.102111~23~422~275-400.06250.111122~34~522~290.09380.113183~44~734~410.12500.116204~56~838~466-320.06250.120143~44~725~300.09380.120203~56~935~450.12500.125224~66~939~458-320.09380.147305~710~1365~750.12500.150454~711~1475~850.18750.150458~1116~2075~9510-240.09380.172355~814~1865~800.12500.172455~814~1880~900.18750.172559~1317~22100~11510-320.09380.173359~1311~1480~950.12500.177509~1312~16100~1200.18750.1777012~1619~25115~14012-240.12500.196659~1219~2495~1150.18750.199759~1321~26135~1550.25000.2038510~1421~26150~1701.7.1.5结合比(%)与预冲孔呎寸(单位inch)关系如表所示：结合比(%)100959085807570656055502-560.07440.07500.07560.07610.07670.07730.07790.07850.07900.07960.08023-480.08550.08610.08680.08750.08820.08880.08950.09020.09090.09160.09224-400.09580.09660.09740.09820.09900.09980.10060.10140.10230.10310.10395-400.10880.10960.11040.11120.11200.11280.11360.11440.11530.11610.11696-320.11770.11870.11970.12070.12180.12280.12380.12480.12580.12680.12788-320.14370.14470.14570.14670.14780.14880.14980.15080.15180.15280.153810-240.16290.16430.16560.16700.16830.16970.17100.17240.17380.17510.176510-320.16970.17070.17170.17270.17380.17480.17580.17680.17780.17880.179812-240.18890.19030.19160.19300.19430.19570.19700.19840.19980.20110.2025对不同的金属材料应选用不同的旋合比，建议选用范围如下：粉末合金或铸铁50~65%冷轧钢板65~70%铝材70~80%金属薄材80~95%1.7.1.6钢板孔径及抽牙高不同规格自攻螺钉所需钢板预制孔孔径及抽牙孔高呎寸如下(单位inch)：钢板厚度T0.020.030.040.060.09螺纹标志抽牙孔孔径D6-320.118~0.1200.118~0.1210.119~0.1220.120~0.1230.122~0.1258-320.144~0.1460.144~0.1470.145~0.1480.146~0.1490.147~0.15010-240.163~0.1650.163~0.1660.164~0.1670.165~0.1680.166~0.17010-320.170~0.1720.170~0.1730.171~0.1740.172~0.1750.173~0.17612-240.189~0.1910.189~0.1920.190~0.1930.191~0.1940.192~0.196板厚T(inch)0.024~0.0350.042~0.0480.0600.0900.1060.122孔径D(inch)HRHRHRHRHRHR0.081~0.1000.0400.0050.0400.0050.0400.0060.0430.0100.101~0.1300.0470.0050.0470.0050.0470.0060.0520.0100.0540.0100.131~0.1500.0530.0050.0530.0050.0530.0060.0600.0100.0630.0100.0720.0130.151~0.1800.0600.0050.0600.0060.0700.0100.0750.0100.0870.0130.181~0.2200.0700.0050.0700.0060.0900.0100.0950.0100.1040.0130.221~0.2600.0750.0060.1000.0100.1050.0100.1200.0130.261~0.3000.0830.0060.1160.0100.1250.0100.1400.0130.301~0.3400.1300.0100.1400.0100.1640.0130.341~0.3800.1400.0100.1550.0100.1700.0130.381~0.4300.1500.0100.1700.0100.1840.0131.7.2塑料螺钉1.7.2.1螺纹形状1.7.2.2硬度一般要求硬度范围在33~39HRC[310~370HV](必要时可采纳表面渗碳或碳氮共渗处理)1.7.2.3螺纹呎寸(单位mm)公称直径d螺纹小径d1螺距Pb(Max)公称直径d螺纹小径d1螺距Pb(Max)尺寸偏差尺寸偏差1.61.20/-0.250.80.2542.80/-0.401.60.321.40.94.53.20/-0.481.82.51.8153.5232.11.25.53.82.242.50/-0.401.40.3064.22.51.7.3浮动螺钉1.7.3.1浮动螺钉形状1.7.3.2差不多要求浮动螺钉铆合后与板材之间隙应在0~0.35mm．1.8螺钉验证方法螺纹其它呎寸化学成分硬度镀层扭力环规*卡尺或千分尺化学或光谱分析显微硬度计X-Ray膜厚计、盐雾试验扭力计*注：对自攻螺钉用环规测量螺纹有困难时，可仅测试其C值，现在应采纳专门之三棱千分尺，且避过引导区进行．资料A．螺钉常见穴型简介穴型传递最大扭力比(%)(以六方型为100％，同规格螺纹螺钉)图示TorxPlus345Torx314方型276十字型183六方型100B．常用板材硬度GI料：牌号C155~67HRB；C250~65HRB；C340~53HRBEG料：45~58HRBCRS料：45~56HRBC．电镀层C．1在工作环境湿度低于70%的室内条件使用的小五金，镀锌层不小于0.005mm，镀镍层不小于0.010mm．C．2在都市的室外条件或可产生冷凝作用的室内条件使用的小五金，对镀锌层不小于0.008mm，对镀镍层应不小于0.020mm．螺母定义：螺母是带有内螺纹的紧固件,配合带有外螺纹的螺钉,利用内外螺纹连接形式,作紧固连接两个被连接件之用．本手册所讨论的是自铆螺母,亦即压铆于冲件预冲孔内,用于固定或连接其它零件的一类螺母．2.1制造材料2.1.1材料牌号一般只用到下列两种材料JISSUS303不锈钢和JISSUM22易削钢．2.1.2材质化学成份化学成份材料％CMnSiCrNiPS其它SUS303≦0.15≦2.0≦1.017~198~10≦0.02≦0.015≦0.6SUM22≦0.130.7~1.00.10~0.350.07~0.120.24~0.330.10~0.352.1.3机械性能试验规格材料拉伸性能硬度(表面测试)屈服强度(MPa)抗拉强度(MPa)伸长率(%)收缩率(%)HVSUS303196Min520Min40Min50Min250~310SUM22未热处理235~284372~46016~2713~22200~250渗碳热处理350~4002.1.4螺母材料的选取应依照冲压板材硬度的不同选取不同材质的自铆螺母．如下表：自铆螺母型号型号讲明材料适合板材硬度SUM22热处理SUS303SUM22未处理预硬SUS303≦90HRB≦80HRB≦70HRB≦60HRBS用易削钢制造，机械加工后热处理SS为个不规格特不形式●●SS●●CLS用不锈钢制造CLSS为个不规格特不形式●●CLSS●●H易削钢制，机械加工后热处理之防锁螺母●●HN易削钢制，机械加工后不热处理之防锁螺母●●HNL易削钢制，机械加工后不热处理之自锁螺母●●SP不锈钢制，机械加工后预硬用于不锈钢板●●2.2尺寸及公差2.2.1型号为“S.SS.CLS以及CLSS”的自铆螺母尺寸．单位mm螺纹及螺距型号螺纹代号板材厚度代码压入深度A(Max)最小板材厚度板材孔径+0.08/-0C(Max)E0.25T0.25孔边缘至对边之最小距离(b)易削钢不锈钢M20.4SCLSNSM200.760.8-14.254.226.31.54.810.97121.371.4M2.50.45SCLSM2.500.760.8-14.254.226.31.54.810.97121.371.4M30.5SCLSM300.760.814.254.226.31.54.810.97121.371.4M3.50.6SCLSM3.500.760.8-14.754.737.11.55.610.97121.371.4M40.7SCLSM400.760.8~15.45.387.926.910.97121.371.4M50.8SSCLSSM500.760.8~16.46.388.727.110.97121.371.4M61SCLSM601.151.28.758.7211.054.088.611.371.422.212.3M81.25SCLSM811.371.410.510.4712.655.479.722.212.3M101.5SCLSM1012.212.311413.9717.357.4813.523.053.18单位inch螺纹及螺距型号螺纹代号板材厚度代码压入深度A(Max)最小板材厚度板材孔径+.003/-0C(Max)E..01T.010孔边缘至对边之最小距离(b)易削钢不锈钢0.086-56#2-56SCLSNS25600.0300.0300.1660.1650.250.070.1910.0380.04020.0540.0560.099-48#3-48SCLS34800.0300.0300.1660.1650.250.070.1910.0380.04020.0400.0560.112-40#4-40SCLS44000.0300.0300.1660.1650.250.070.1910.0380.04020.0540.05630.0870.0910.138-32#6-32SCLS63200.0300.0300.18750.1870.280.070.2210.0380.04020.0540.05630.0870.0910.164-32#8-32SCLS83200.0300.03010.2130.2120.310.090.2710.0380.04020.0540.05630.0870.0910.190-24#10-24SSCLSS02400.0300.0300.2500.2490.340.090.2810.0380.04020.0540.05630.0870.0910.190-32#10-32SSCLSS03200.0300.0300.2500.2490.340.090.2810.0380.04020.0540.05630.0870.0910.216-24#12-24SCLS122410.0380.0400.2770.2760.380.130.3120.0540.05630.0870.0912.2.2型号为SP,专用于不锈钢冲压板件上的自铆螺母尺寸(米制单位为mm，英制单位为inch)．螺纹及螺距类型螺纹代号板材厚度代号压入深度A(Max)板材最小厚度板材孔径+0.08/-0C(最大)E0.25T0.25孔边缘至对边之最小距离(b)M30.5SPM300.760.8-14.254.226.31.54.810.971.01-1.3921.371.4M40.7SPM400.760.8-15.45.387.926.910.971.01-1.3921.371.4M50.8SPM500.760.8-16.46.388.727.110.971.01-1.3921.371.4M61SPM611.371.48.758.7211.14.18.6螺纹及螺距类型螺纹代号板材厚度代号压入深度A(Max)板材最小厚度板材孔径+0.003/-0.000C(最大)E0.010T0.010孔边缘至对边之最小距离(b)0.112-40#4-40SP44000.0300.030~0.0390.1660.1650.250.070.1910.0380.040~0.05520.0540.0560.138-32#6-32SP63200.0300.030~0.0390.18750.1870.280.070.2210.0380.040~0.05520.0540.0560.164-32#8-32SP83200.0300.030~0.0390.2130.2120.310.090.2810.0380.040~0.05520.0540.0560.190-32#10-32SP03210.0300.030~0.0390.2500.2490.340.090.2820.0380.040~0.05530.0540.0562.2.3型号为H,HN,HNL之易削钢制自锁和防锁螺母的尺寸．单位mm螺纹及螺距型号螺纹代号压入深度A(Max)板材最小厚度板材孔径+0.13/-0C(最大)E0.25T1T2孔边缘至对边之最小距离(b)防锁自锁防锁自锁0.130.25M61NAHNLM61.481.488.758.7212.7510M81.25NAHNLM81.481.4810.510.4714.66.311M101.5HHNHNLM101.481.4812.712.6716.57.9122.2.4型号为F.的自铆螺母尺寸单位mm螺纹规格及螺距型号螺纹代码板材厚度代码压入深度A(Max)板材最小厚度板材孔径+0.08/-0C最大值H孔边缘至对边之最小距离(b)M2×0.4FM2NS11.51.5-2.34.44.344.8622.32.32-UPM2.5×0.45FM2.511.51.5-2.34.44.344.8622.32.32-UPM3×0.5FM311.51.5-2.34.44.344.8622.32.32-UPM4×0.7FM411.51.5-2.37.47.347.97.222.32.32-UPM5×0.8FM511.51.5-2.37.97.878.7822.32.32-UPM6×1FM633.13.2-3.98.758.719.58.843.94-4.75NS4.74.72-UP2.2.5尺寸公差一般未注公差：米制尺寸为整数的公差为0.30mm；尺寸之小数点后面一位的公差为0.2mm；小数点有二位的公差为0.13mm．英制尺寸小数点后面二位的公差为0.01inch；小数点有三位的公差为0.005inch．2.3压铆要求(压铆力为参考项目)螺母定位准确、压入深度A应与下模面平齐，上下模铆合高度应为一个板厚．压合后自铆螺母铆合部位应完全深入母材，不能出现间隙．目前选用材质所制螺母对100吨以下冲床完全适应，若因超出此范围而发生螺母之变形失效，则应考虑选用另外的材料制造，如中碳钢等．螺母类型螺纹代码板材厚度代码板材压铆力(KN)推力(N)(Min)扭力(N.M)(Min)SCLSM2M2.5M305052-H34铝板6.7-8.92800.914001.1327501.470钢板11.2-15.64701.4715501.7210102.03SCLSM3.505052-H34铝板11.2-13.52801.814001.9228402.50钢板13.4-26.74801.815702.3212102.3SCLSM405052-H34铝板11.2-13.43002.3714702.6297040钢板18-274902.9516454212505.1SCLSM505052-H34铝板11.2-15.6300314803.6211905.70钢板18-385303.618004.5214106.8SCLSM605052-H34铝板18-329707.91158010.2214.10钢板27-3613801311760172SCLSM815052-H34铝板18-32157013.6218.11钢板27-36187018.7220.3SCLSM1015052-H34铝板22-36176032.721202036.22SPM30304不锈钢板13-225751.5817251.92212902.03SPM40304不锈钢板22-316453.3818004.18216005.08SPM50304不锈钢板26-408003.95110255.08217756.77螺母类型螺纹代码板材厚度代码板材压铆力(KN)推力(N)(Min)扭力(N.M)(Min)SPM61304不锈钢板40200017HM1002.29mm5052-H34.铝板22176021.512.24mm冷轧钢板33202027.1FM2见Para2.2.4表5052-H34铝板钢板8.913.30.90.9M2.58.913.30.90.9M38.913.30.90.9M48.913.31.11.1M511.112.81.11.1M615.6202.83.72.4配合呎寸同种规格的螺母需与同种规格的螺钉相配合．如对M4的螺母需与M4的螺钉相配合．2.5螺母验证方法螺纹其它呎寸化学成分硬度铆合间隙镀层推力扭力塞规卡尺或千分尺化学或光谱分析显微硬度计目视或塞尺X-Ray膜厚计、盐雾试验推力计扭力计螺柱定义：压铆于冲件预冲孔内，带有螺纹，用于固定或连接其它零件的一类紧固件．3.1制造螺柱材料3.1.1材料牌号一般只用到下列三种材料：JISSUS303不锈钢、JISSUM22易削钢和JIS7075-T6铝合金．3.1.2化学成份化学成份(%)材料CMnSiCrNiPS其它SUS303≦0.15≦2.0≦1.017~198~10≦0.02≦0.015≦0.6SUM22≦0.130.7~1.00.10~0.350.07~0.120.24~0.330.10~0.357075-T6≦Fe:0.50≦0.30≦0.400.18-0.28Cu1.2~2.0Mg2.1~2.9Zn5.1~6.1Zr+T≦0.253.1.3机械性能规格试验材料拉伸性能硬度(表面测试)屈服强度(MPa)抗拉强度(Mpa)伸长率(%)收缩率(%)HVSUS303198Min520Min40Min50Min250~310SUM22未热处理235~284372~46016~2713~22200~250渗碳热处理350~4007075-T64615307Min3.1.4螺柱材料的选取依照冲压板材硬度的不同选取不同材质的螺柱．如下表：螺柱型号*型号讲明材质板材硬度SUM22热处理SUM22未处理7075-T6SUS303≦80HRB≦70HRB≦60HRB≦50HRBSO用易削钢制造，机械加工后进行热处理●●SOA用铝合金制造●●SOS用不锈钢制造●●BSO为盲孔，其它同SO●●BSOA为盲孔，其它同SOA●●BSOS为盲孔，其它同SOS●●SON用易削钢制造，机械加工后不必热处理●●BSON为盲孔，其它同SOS●●*注：SO—StandOffA—AluminumS—StainlessSteelB—BlindN—Non-HeatTreated3.2尺寸3.2.1型号为“SO.SON.SOA.SOS.”的通孔螺柱3.2.1.1一般尺寸单位mm螺纹代码板材厚度(min)板材孔径(+0.08/-0)内孔径B±0.13C(+0/-0.13)H孔边缘至对边之最小距离(b)M314.23.24.194.863.5M315.43.25.386.46.8M3.515.43.95.386.46.8M41.37.24.87.117.98M51.37.25.357.117.98注:3.5M3是在原有M3基础上将壁厚加厚、螺纹尺寸保持不变.单位inch螺纹代码板材厚度(min)板材孔径(+0.003/-0.000)内孔径B±0.005C(+0/-0.005)H孔边缘至对边之最小距离(b)4400.0400.1660.1250.1653/1660.23644030.0400.2130.1250.2121/40.2763250.0400.2130.1560.2121/40.2786320.0500.2810.1560.2805/160.318320.0500.2810.1880.2805/160.310320.0500.2810.2030.2805/160.313.2.1.2螺纹规格和螺柱长度单位mm螺纹规格型号螺纹代码尺寸L(公差+0.05/-0.03)SUM22热处理SUM22未处理SUS3037075-T6M3×0.5SOSONSOSSOAM334681012141618N/AN/AN/A3.5M3M3.5×0.6SOSONSOSSOAM3.534681012141618202225M4×0.7M4M5×0.8M5D尺寸±0.15无4811单位inch螺纹规格型号螺纹代码尺寸L(×1/32Inch公差+0.05/-0.03)SUM22热处理SUM22未处理SUS3037075-T60.112-40#4-40SOSONSOSSOA4404681012141618202224N/AN/AN/AN/AN/A64400.138-32#6-326324681012141618202224262830323486320.164-32#8-32832468101214161820222426283032340.190-32#10-32032D尺寸±0.010无0.18780.3120.4373.2.2型号为“BSO.BSON.BSOA.BSOS.”的盲孔螺柱3.2.2.1一般尺寸单位mm螺柱螺纹代码板材厚度(min)板材孔径(+0.08/-0)C(+0/-0.13)H孔边缘至对边之最小距离(b)M314.24.194.863.5M315.45.386.46.8M3.515.45.386.46.8M41.37.27.117.98M51.37.27.117.98单位inch螺柱螺纹代码板材厚度(Min)板材孔径(+0.003/-0.000)C(+0/-0.005)H孔边缘至对边之最小距离(b)4400.0400.1660.1653/1660.23644030.0400.2130.2121/40.276320.0400.2130.2121/40.2786320.0500.2810.2805/160.318320.0500.2810.2805/160.310320.0500.2810.2805/160.313.2.2.2螺纹规格和螺柱长度单位mm螺纹规格型号螺纹代码尺寸L(公差+0.05/-0.13)SUM22热处理SUM22未处理SUS3037075-T6M3×0.5BSOBSONBSOSBSOAM3681012141618N/AN/AN/A3.5M3M3.5×0.6BSOBSONBSOSBSOAM3.5681012141618202225M4×0.7M4M5×0.8M5F之最小尺寸3.2456.59.5单位inch螺纹规格型号螺纹代码尺寸L(×1/32Inch公差+0.05/-0.03)SUM22热处理SUM22未处理SUS3037075-T60.112-40#4-40BSOBSONBSOSBSOA4401012141618202224262830323464400.138-32#6-326321012141618202224262830323486320.164-32#8-32832101214161820222426283032340.190-32#10-32032F尺寸Min0.1560.1870.2500.3753.3公差一般未注公差:米制尺寸为整数的公差为0.30mm.尺寸之小数点后面一位的公差为0.25mm.小数点有二位的公差为0.13mm.英制尺寸小数点后面二位的公差为0.01inch,小数点有三位的公差为0.005inch.3.4压铆要求螺柱定位准确、上模平面与下模螺柱孔底面之间的距离A应等于螺柱高度L．压合后螺柱铆合部位应深入板材，不能出现间隙．目前选用材质所制螺母对100吨以下冲床完全适应，若因超出此范围而发生螺母之变形失效，则应考虑选用另外的材料制造，如中碳钢等．螺纹代码螺柱材料锁紧扭力(N.M)(Max)板材1.5mm5052-H34铝板(Min)1.5mm钢板(Min)安装力(KN)推力(N)扭力(N.M)拉出力(N)安装力(KN)推力(N)扭力(N.M)拉出力(N)M3钢0.554.97101.2412459.810002.151465不锈钢0.444.97101.249969.810002.151172铝0.334.97101.247473.5M,3.5钢0.55,0.917.613302.82137514.718603.951690不锈钢0.44,0.737.613302.82110014.718603.951352铝0.33,0.557.613302.82825M4,M5钢2.3610.717805.08257517.824908.473110不锈钢1.6,2.8810.717805.08206017.824908.472488铝1.2,2.1610.717805.081545注:假如螺柱安装在板厚小于1.5mm之片材上,则推力、扭力、拉出力规格数据为原规格之80%,安装力规格保持不变.3.5螺柱验证方法螺纹其它呎寸化学成分硬度铆合间隙镀层推力扭力塞规卡尺或千分尺化学或光谱分析显微硬度计目视或塞尺X-Ray膜厚计、盐雾试验推力计扭力计支柱定义：压铆于冲件预冲孔内,用于安装其它零件时起导向或定位之柱体零件．4.1型号为“SO.SON.SOA.SOS”的通孔支柱4.1.1材料牌号一般只用到下列三种材料：JISSUS303不锈钢、JISSUM22易削钢和JIS7075-T6铝合金．4.1.2材质化学成份化学成份(%)材料CMnSiCrNiPS其它SUS303≦0.15≦2.0≦1.017~198~10≦0.02≦0.015≦0.6SUM22≦0.130.7~1.00.10~0.350.07~0.120.24~0.330.10~0.357075-T6Fe:≦0.50≦0.30≦0.400.18-0.28Cu1.2~2.0Mg2.1~2.9Zn5.1~6.1Zr+Ti≦0.254.1.3机械性能规格试验材料拉伸性能硬度测试屈服强度(MPa)抗拉强度(Mpa)伸长率(%)收缩率(%)HVSUS303198Min520Min40Min50Min250~310SUM22热处理前235~284372~46016~2713~22200~250热处理后350~4007075-T64615307Min4.1.4支柱材料的选取依照冲压板材硬度的不同选取不同材质的支柱．如下表：螺柱型号＊型号讲明材质板材硬度SUM22热处理SUM22未处理7075-T6SUS303≦80HRB≦70HRB≦60HRB≦50HRBSO用易削钢制造，机械加工后进行热处理●●SOA用铝合金制造●●SOS用不锈钢制造●●SON用易削钢制造，机械加工后不必热处理●●*注：SO—StandOffA—AluminumS—StainlessSteelN—Non-HeatTreated4.1.5一般尺寸单位mm通孔代码最小板厚板上孔径C(+0/-0.13)H孔边缘至对边之最小距离(b)43.114.24.194.8663.115.45.386.46.863.615.45.386.46.883.61.37.27.117.9884.11.37.27.117.9885.11.37.27.117.98单位inch通孔代码最小板厚板上孔径+0.003/-0C(+0/-0.005)H孔边缘至对边之最小距离(b)41160.0400