DｎPhr129『JIS B 0202 : 1999』より抜粋■ 付表1 基準山形及び基準寸法ねじ山数（25.4mmにつき）ねじの呼びG1/16G1/8G1/4G3/8G1/2G5/8G3/4G7/8G1G1 1/8G1 1/4G1 1/2G1 3/4G2G2 1/4G2 1/2G2 3/4G3G3 1/2G4G4 1/2G5G5 1/2G6ピッチ（参考）2828191914141414111111111111111111111111111111110.90710.90711.33681.33681.81431.81431.81431.81432.30912.30912.30912.30912.30912.30912.30912.30912.30912.30912.30912.30912.30912.30912.30912.3091山の頂及び谷の丸みねじ山の高さ0.5810.5810.8560.8561.1621.1621.1621.1621.4791.4791.4791.4791.4791.4791.4791.4791.4791.4791.4791.4791.4791.4791.4791.4790.120.120.180.180.250.250.250.250.320.320.320.320.320.320.320.320.320.320.320.320.320.320.320.32おねじ有効径外径dめねじ有効径谷の径7.7239.72813.15716.66220.95522.91126.44130.20133.24937.89741.91047.80353.74659.61465.71075.18481.53487.884100.330113.030125.730138.430151.130163.830d2d1D27.1429.14712.30115.80619.79321.74925.27929.03931.77036.41840.43146.32452.26758.13564.23173.70580.05586.40598.851111.551124.251136.951149.651162.351谷の径内径D16.5618.56611.44514.95018.63120.58724.11727.87730.29134.93938.95244.84550.78856.65662.75272.22678.57684.92697.372110.072122.772135.472148.172160.872単位 mm管用並行ねじの寸法
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