螺丝标准及孔径

1、 电镀产品种类 蓝锌白锌五彩黑锌+防锈油黑锌+Lacquer涂装镀镍镀红铜镀黄铜镀锡镀铬镀古铜不锈钢清洗基本头型P 头B 头V 头R 头T 头O 头C 头F 头I 头喇叭头H 头IP 头基本槽型十字槽十一槽一字槽梅花槽内六角槽米字槽精密机械牙小螺丝 *种类1. 精密小螺丝 ( 1.4 <= d < 2.6 ) 2. 特殊极微小螺丝 ( d < 1.4 ) .*头型*螺丝公差1. 精密小螺丝 ( 1.4 <= d < 2.6 )公称直径螺 距外 径有效径最 小最 大最 小最 大M1.40.31.3201.4001.1351.205M1.60.351.496

2、1.6001.2911.373M1.70.351.6101.7001.3931.473M2.00.41.8902.0001.6601.740M2.30.42.1902.3001.9602.040M2.50.452.3802.5002.1182.208M2.60.452.4802.6002.2182.3082. 特殊极微小螺丝 ( d < 1.4 )公称直径螺 距外 径长 度标准尺寸公 差范围公差0.60.150.6000.05 0.8600.150.70.1750.700.870.80.20.800.880.90.2250.900.891.00.251.000.8101.20.251.2

3、000.061.51.000.2精密自攻牙小螺丝1. S Type公称直径螺距外 径先端部推拨长度CDd1E最小最大最小最大最小最大最小最大1.40.31.371.431.311.370.811.010.601.101.60.351.571.631.501.560.931.150.751.251.70.351.671.731.601.661.051.250.751.252.00.41.962.041.881.961.281.481.001.502.50.452.472.552.382.461.661.831.752.252.B Type公称直径 螺距外 径先端部推拨长度CDd1E最小最大最小最

4、大最小最大最小最大1.40.451.371.431.311.370.720.920.601.101.60.51.571.631.501.560.8461.0460.751.251.70.51.671.731.601.660.9461.1460.751.252.00.6351.962.041.881.961.161.361.001.502.50.92.462.542.372.451.551.751.752.253.P Type公称直径外 径CD最小最大最小最大1.4(1.40)(1.46)(1.34)(1.40)1.7(1.70)(1.77)(1.63)(1.70)2.02.022.121.94

5、2.042.52.532.632.442.544. Power-Lock公称直径外 径CD最小最大最小最大1.40.31.521.361.461.60.351.721.551.651.70.351.821.651.752.00.42.151.972.075. PS Type ( Different From P Type )公称直径外 径CD最小最大最小最大1.4(1.40)(1.46)(1.34)(1.40)1.7(1.70)(1.77)(1.63)(1.70)2.02.022.121.942.042.52.532.632.442.54B 型螺丝特点：标准三角牙螺丝，是最符合常规铁板或塑料锁

6、附的螺丝。 *图形*螺纹公差公称直径牙数外径先端部先端部长度C mmD mmC ' mm最大最小最大最小最大最小最大最小2402.041.961.961.881.461.261.61.22.3322.342.262.262.181.761.562.01.52.6282.642.562.552.471.941.742.31.83243.052.952.952.852.252.052.72.13.5203.553.453.463.342.652.453.22.54184.053.953.913.813.002.803.62.85165.064.944.904.783.743.444.03.

7、16146.085.925.885.724.524.124.63.68128.107.907.857.656.005.505.34.2*配合孔径（材质钢）0.60.81.01.21.62.02.63.221.551.61.61.61.651.651.7 2.31.91.01.91.951.951.952.02.02.62.152.152.22.22.22.252.252.332.652.652.652.72.72.72.72.753.53.053.053.053.13.13.13.153.1543.63.63.63.63.653.653.653.655 4.54.54.54

8、.554.554.64.66  5.35.35.45.45.55.58  7.37.37.37.37.47.4特点：一般可塑性塑料专用自攻锁紧螺丝，锁进速度快，反复使用性好，不引起塑料的烧附，破裂以及锁入口的破损。 *图形 *螺纹公差公称直径牙 距外 径CD最大最小最大最小2.00.794(32)2.122.022.041.942.30.907(28)2.432.332.352.252.51.058(24)2.632.532.542.442.61.058(24)2.732.632.642.543.01.270(20)3.153.033.052.933.5

9、1.411(18)3.663.543.573.454.01.583(16)4.164.044.023.905.01.814(14)5.195.055.034.896.02.117(12)6.246.066.045.868.02.540(10)8.308.088.057.93*标准螺纹底孔径 ( 材质-ABS. PP )公称直径材质厚度小于2倍直径材质厚度大于2倍直径21.701.752.32.002.052.52.102.152.62.202.2532.502.603.53.023.1043.443.5554.374.4565.265.35S 型螺丝 特点：具有优异的薄铁板锁附功能，加强锁附点

10、之渗入，使锁附物体不因振动而松懈，其外径比同公称直径之机械牙螺丝大，不可锁入螺帽，但退出后可锁入机械螺丝。 *图形*螺纹公差公称直径螺距外径先端部先端部长度 C mmD mmC ' mm最大最小最大最小最大最小最大最小20.42.041.961.961.881.581.441.81.42.30.42.342.262.262.181.821.681.81.42.50.452.552.472.462.381.961.792.11.52.60.452.652.572.562.482.051.882.11.530.53.052.972.952.872.442.242.31.73.50.63.5

11、63.483.443.362.832.632.72.140.74.073.993.933.853.273.073.22.450.85.085.004.924.844.173.873.62.861.06.106.005.905.804.974.444.53.581.258.138.037.887.786.436.045.74.3*配合孔径（材质钢）0.81.01.21.62.02.63.24.021.71.71.71.71.75   2.32.02.02.02.02.0   2.52.22.22.22.22.22.25 

12、60;2.62.32.32.32.32.32.352.35 32.652.72.72.72.752.752.82.83.53.13.13.13.153.153.23.23.243.63.63.653.653.73.73.73.75 4.64.64.654.654.654.74.76 5.45.55.55.55.555.555.68 7.47.47.47.47.57.57.5机械螺丝成型规格表*JIS 公制粗牙螺纹规格表 ( 6g)规格牙距外径最大最小M20.41.981.89M2.30.42.282.19M2.50.452.482.38M30.52.98

13、2.88M3.50.63.473.36M40.73.983.84M4.50.754.474.34M50.84.984.83M61.05.975.82M71.06.976.82M81.257.967.79M91.258.968.79M101.59.969.77*JIS 公制细牙螺纹规格表 ( 6g)规格牙距外径最大最小M40.53.973.86M4.50.54.474.36M50.54.974.86M60.755.975.85M70.756.976.85M81.07.977.83M91.08.978.83M101.259.969.81M101.09.979.82*UNC 英制粗牙螺纹规格表( 2A)规格牙距外径最大最小NO:1641.8381.743NO:2562.1692.066NO:3482.4962.383NO:4402.8242.695NO:5403.1543.026NO:6323.4843.333NO:8324.1423.991NO:10244.8004.618NO:12