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1、攻絲底孔的使用參數(shù)表底孔的使用參數(shù)表一、螺紋下孔徑表1、公制粗牙螺紋、公制粗牙螺紋JISB02091982(單位:mm)內(nèi)螺紋小徑螺紋尺寸鉆頭直徑螺紋下孔徑最小直徑最大直徑M10.250.750.78(80%)0.7290.7851.10.250.850.88(80%)0.8290.8851.20.250.950.98(80%)0.9290.9851.40.31.11.14(80%)1.0751.1421.60.351.251.32(7
2、5%)1.2211.3211.80.351.451.52(75%)1.4211.52120.41.61.65(80%)1.5671.6792.20.451.751.83(75%)1.7131.8382.50.452.12.13(75%)2.0132.13830.52.52.59(75%)2.4592.5993.50.62.93.01(75%)2.8503.01040.73.33.39(80%)3.2423.4224.50.753.83.
3、85(80%)3.6883.87850.84.24.31(80%)4.1344.3346155.13(80%)4.9175.1537166.13(80%)5.9176.15381.256.86.85(85%)6.6476.91291.257.87.85(85%)7.6477.912101.58.58.62(85%)8.3768.676111.59.59.62(85%)9.3769.676121.7510.310.40(85%)10.10
4、610.4411421212.2(85%)11.83512.2101621414.2(85%)13.83514.210182.515.515.7(85%)15.29415.744202.517.517.7(85%)17.29417.744222.519.519.2(85%)19.29419.7442432121.2(85%)20.75221.2522732424.2(85%)23.75224.252303.526.526.6(90%)2
5、6.21126.771333.529.529.6(90%)29.21129.7713643232.1(90%)31.67032.2703943535.1(90%)34.67035.270424.537.537.6(90%)37.12937.799454.540.540.6(90%)40.12940.7994854343.1(90%)42.58743.297註(1)M1.4以下等級(jí):5H、M1.6以上等級(jí):6H(2)基於JISB02091
6、982標(biāo)準(zhǔn)2、公制細(xì)牙螺紋、公制細(xì)牙螺紋01JISB02111982(單位:mm)內(nèi)螺紋小徑螺紋尺寸鉆頭直徑螺紋下孔徑最小直徑最大直徑M2.50.352.22.22(75%)2.1212.221281.526.526.62(85%)26.37626.6762812727.13(80%)26.91727.1533032727.2(85%)26.75227.2523022828.2(85%)27.83528.210301.528.528.6
7、2(85%)28.37628.6763012929.13(80%)28.91729.1533223030.2(85%)29.83530.210321.530.530.62(85%)30.37630.6763333030.2(85%)29.75230.2523323131.2(85%)30.83531.210331.531.531.62(85%)31.37631.676351.533.533.62(85%)33.37633.6763633
8、333.2(85%)32.75233.2523623434.2(85%)33.83534.210361.534.534.62(85%)34.37634.676381.536.536.62(85%)36.37636.6763933636.2(85%)35.75236.2523923737.2(85%)36.83537.210391.537.537.62(85%)37.37637.6764033737.2(85%)36.75237.2524
9、023838.2(85%)37.83538.210401.538.538.62(85%)38.37638.6764243838.1(90%)37.67038.2704233939.2(85%)38.75239.2524224040.2(85%)39.83540.210421.540.540.62(85%)40.37640.6764544141.1(90%)40.67041.2704534242.2(85%)41.75242.252452
10、4343.2(85%)42.83543.210451.543.543.62(85%)43.37643.6764844444.1(90%)43.67044.2704834545.2(85%)44.75245.2524824646.2(85%)45.83546.210481.546.546.62(85%)46.37646.6765034747.2(85%)46.75247.2525024848.2(85%)47.83548.210501.5
11、48.548.62(85%)48.37648.676註(1)等級(jí):6H(2)基於JISB02111982標(biāo)準(zhǔn)3、美制粗牙螺紋、美制粗牙螺紋(單位:mm)內(nèi)螺紋小徑螺紋尺寸鉆頭直徑2B級(jí)螺紋下孔徑最小直徑最大直徑NO.164UNC1.551.57(65%)1.4251.5822561.81.86(65%)1.6951.8713482.12.14(65%)1.9412.1464402.32.36(70%)2.1572.3855402.62.
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