公制 粗牙螺纹 (切削方式加工）
嵌合度区分嵌合度区分中（注1）内螺纹小径最小直径最大直径2级（注2）螺纹尺寸M1×0.25M1.1×0.25M1.2×0.25M1.4×0.3M1.6×0.35M1.8×0.35M2×0.4M2.2×0.45M2.5×0.45M3×0.5M3.5×0.6M4×0.7M4.5×0.75M5×0.8M6×1M7×1M8×1.25M9×1.25M10×1.5M11×1.5M12×1.75M14×2M16×2M18×2.5M20×2.5M22×2.5M24×3M27×3M30×3.5M33×3.5M36×4M39×4M42×4.5M45×4.5M48×5钻头直径0.750.850.951.11.251.451.61.752.12.52.93.33.84.2566.87.88.59.510.3121415.517.519.5212426.529.5323537.540.543中（注1）2级（注2）0.78（80%）0.88（80%）0.98（80%）1.14（80%）1.32（75%）1.52（75%）1.65（80%）1.83（75%）2.13（75%）2.59（75%）3.01（75%）3.39（80%）3.85（80%）4.31（80%）5.13（80%）6.13（80%）6.85（85%）7.85（85%）8.62（85%）9.62（85%）10.4（85%）12.2（85%）14.2（85%）15.7（85%）17.7（85%）19.7（85%）21.2（85%）24.2（85%）26.6（90%）29.6（90%）32.1（90%）35.1（90%）37.6（90%）40.6（90%）43.1（90%）0.7290.8290.9291.0751.2211.4211.5671.7132.0132.4592.853.2423.6884.1344.9175.9176.6477.6478.3769.37610.10611.83513.83515.29417.29419.29420.75223.75226.21129.21131.6734.6737.12940.12942.5870.7850.8850.9851.1421.3211.5211.6791.8382.1382.5993.013.4223.8784.3345.1356.1536.9127.9128.6769.67610.44112.2114.2115.74417.74419.74421.25224.25226.77129.77132.2735.2737.79940.79943.297注1）M1.4以下等级：5H， M1.6以上等级6H。注2）基于JIS B 0209-1982标准。
※底孔径(公制螺纹.美制统一螺纹)
底孔径=D-2×(0.541266P)×(嵌合率/100)
备注：P：螺距
D：外螺纹大径
0.923760.42492
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