攻丝底孔参数

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1、攻丝底孔的使用参数表一、螺紋下孔徑表1、公制粗牙螺紋JISB0209-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M1×0.250.750.78(80%)0.7290.7851.1×0.250.850.88(80%)0.8290.8851.2×0.250.950.98(80%)0.9290.9851.4×0.31.11.14(80%)1.0751.1421.6×0.351.251.32(75%)1.2211.3211.8×0.351.451.52(75%)1.4211.5212×0.41.

2、61.65(80%)1.5671.6792.2×0.451.751.83(75%)1.7131.8382.5×0.452.12.13(75%)2.0132.1383×0.52.52.59(75%)2.4592.5993.5×0.62.93.01(75%)2.8503.0104×0.73.33.39(80%)3.2423.4224.5×0.753.83.85(80%)3.6883.8785×0.84.24.31(80%)4.1344.3346×155.13(80%)4.9175.1537×166.13(80%)5.917

3、6.1538×1.256.86.85(85%)6.6476.9129×1.257.87.85(85%)7.6477.91210×1.58.58.62(85%)8.3768.67611×1.59.59.62(85%)9.3769.67612×1.7510.310.40(85%)10.10610.44114×21212.2(85%)11.83512.21016×21414.2(85%)13.83514.21018×2.515.515.7(85%)15.29415.74420×2.517.517.7(85%)17.29417

4、.74422×2.519.519.2(85%)19.29419.74424×32121.2(85%)20.75221.25227×32424.2(85%)23.75224.25230×3.526.526.6(90%)26.21126.77133×3.529.529.6(90%)29.21129.77136×43232.1(90%)31.67032.27039×43535.1(90%)34.67035.27042×4.537.537.6(90%)37.12937.79945×4.540.540.6(90%)40.1294

5、0.79948×54343.1(90%)42.58743.297註(1)M1.4以下等級：5H、M1.6以上等級：6H(2)基於JISB0209-1982標準2、公制細牙螺紋-01JISB0211-1982(單位：mm)螺纹尺寸钻头直径螺纹下孔徑內螺紋小徑最小直径最大直径M2.5×0.352.22.22(75%)2.1212.2213×0.352.72.72(75%)2.6212.7213.5×0.353.23.22(75%)3.1213.2214×0.53.53.59(75%)3.4593.5994.5×0.544.

6、09(75%)3.9594.0995×0.54.54.59(75%)4.4594.5995.5×0.555.09(75%)4.9595.0996×0.755.35.35(80%)5.1885.3787×0.756.36.35(80%)6.1886.3788×177.13(80%)6.9177.1538×0.757.37.35(80%)7.1887.3789×188.13(80%)7.9178.1539×0.758.38.35(80%)8.1888.37810×1.258.88.85(85%)8.6478.91210×1

7、99.13(80%)8.9179.15310×0.759.39.35(80%)9.1889.37811×11010.13(80%)9.91710.15311×0.7510.310.35(80%)10.18810.37812×1.510.510.62(85%)10.37610.67612×1.2510.810.85(85%)10.64710.91212×11111.13(80%)10.91711.15314×1.512.512.62(85%)12.37612.67614×11313.13(80%)12.91713.153

8、15×1.513.513.62(85%)13.37613.67615×11414.13(80%)13.91714.15316×1.514.514.62(85%)14.37614.67616×11515.13(80%)14.91715.15317×1.515.515.62(85%)15.37615.67617×11616.13(80