公制螺纹加工表
内螺纹小径：D1=D-1.082532t外螺纹小径：d1=d-1.082532t
公制螺纹 粗牙（60°）
螺纹规格M3M4M5M6M8M10M12M14M16M18M20M22M24M27M30螺距（t）0.500.700.801.001.251.501.752.002.002.502.502.503.003.003.50底孔2.503.304.205.006.758.5010.2512.0014.0015.5017.5019.5021.0024.0026.50深度7.5010.5012.0015.0018.7522.5026.2530.0030.0037.5037.5037.5045.0045.0052.50螺纹规格M8M10M12M14M16M18M20M22M24M27M30M33M36M42M48公制螺纹 细牙（60°）螺距（t）1.001.001.501.501.501.501.501.502.002.002.002.002.002.002.00底孔7.009.0010.5012.5014.5016.5018.5020.5022.0025.0028.0031.0034.0040.0046.00深度15.0015.0022.5022.5022.5022.5022.5022.5030.0030.0030.0030.0030.0030.0030.00注意：底孔尺寸均为加工螺纹孔时专用尺寸。 深度尺寸均为加工螺纹孔时孔深度尺寸。 （规定为15倍螺距）
G 英制圆柱管螺纹（55°）加工一览表
小径：d1=d-1.2807t公称直径1/81/43/81/25/83/47/811 1/81 1/41 3/81 1/21 3/422 1/42 1/22 3/4牙/寸2819191414141411111111111111111111螺距（t）0.9071.3371.3371.8141.8141.8141.8142.3092.3092.3092.3092.3092.3092.3092.3092.3092.309底孔8.5011.5015.0018.5020.5024.0028.0030.5035.0039.0041.5045.0051.0057.0063.0072.5079.00深度14.020.020.027.527.527.527.535.035.035.035.035.035.035.035.035.035.0螺纹大径9.729013.158016.663020.956022.912026.442030.202033.250037.898041.912044.325047.805053.748059.616065.712075.187081.5370ZG 英制锥管螺纹（55°）加工一览表
小径：d1=d-1.2807t公称直径1/81/43/81/23/411 1/41 1/222 1/2牙/寸28191914141111111111螺距0.9071.3371.3371.8141.8142.3092.3092.3092.3092.309底孔8.57-8.2711.5-11.115.0-14.618.6-18.224.1-23.530.3-29.639.0-38.144.8-44.056.7-55.772.2-71.1深度14.020.020.027.027.035.035.035.035.035.0螺纹大径9.729013.158016.663020.956026.442033.250041.912047.805059.616075.8170注意：底孔尺寸均为加工螺纹孔时专用尺寸。
深度尺寸均为加工螺纹孔时孔深度尺寸。 （规定为15倍螺距）
Z 圆锥管螺纹（布锥管螺纹） （60°）
小径：d1=d-1.6t公称直径1/161/81/43/81/23/411 1/41 1/22牙/寸27271818141411 1/211 1/211 1/211 1/2螺距（t）0.9410.9411.4111.4111.8141.8142.2092.2092.2092.209底孔6.4-6.18.8-8.511.3-1114.8-14.418.3-17.823.7-23.129.7-29.138.5-37.844.5-43.956.6-55.9深度15.015.021.021.027.027.033.033.033.033.0螺纹大径7.895010.272013.572017.055021.223026.598033.228041.985048.054060.0920美制螺纹（UNC、UNF）参数表（60°）
小径：d1=d-1.082532t尺寸代号公称直径in公称直径mm1/45/163/87/161/29/165/83/47/811 1/81 1/41 3/81 1/21 3/420.25000.31250.37500.43750.50000.56250.62500.75000.87501.00001.12501.25001.37501.50001.75002.00006.357.949.5311.1112.7014.2915.8819.0522.2325.4028.5831.7534.9338.1044.4550.80每英寸粗牙粗牙底孔-每英寸细牙细牙底孔-数/螺纹深度数/螺距深度20/1.27￠5.0-1928/0.91￠5.5-1418/1.4116/1.5914/1.8113/1.9512/2.1211/2.3110/2.549/2.828/3.187/3.637/3.636/4.236/4.235/5.084.5/5.64￠6.5-21￠7.8-24￠9.2-27￠10.6-29￠12.0-32￠13.5-35￠16.5-38￠19.2-42￠22.0-48￠25.0-55￠28.0-55￠30.5-64￠38.0-64￠39.0-76￠45.0-8524/1.0624/1.0620/1.2720/1.2718/1.4118/1.4116/1.5914/1.8112/2.1212/2.1212/2.1212/2.1212/2.12￠7.0-16￠8.5-16￠10.0-19￠11.5-19￠13.0-21￠14.5-21￠17.5-24￠20.5-27￠23.5-32￠26.5-32￠29.5-32￠33.0-32￠36.0-32注意：in为英寸符号，一英寸等于25.4毫米。 底孔尺寸均为加工螺纹孔时专用尺寸。
深度尺寸均为加工螺纹孔时孔深度尺寸。 （规定为15倍螺距）
惠氏螺纹（BSW、BSF）参数表（55°）
小径：d1=d-1.280655t公称直径in公称直径mm1/83/167/321/49/325/163/87/161/29/165/811/163/47/811 1/81 1/41 3/81 1/21 5/81 3/422 1/42 1/23.184.765.566.357.147.949.5311.1112.7014.2915.8817.4619.0522.2325.4028.5831.7534.9338.1041.2844.4550.8057.1563.505/5.0804/6.3504/6.350￠38.0-76￠49.0-95￠55.4-954.5/5.644￠43.6-856/4.233￠32.8-6318/1.41116/1.58814/1.81412/2.11712/2.11711/2.30911/2.30910/2.5409/2.8228/3.1757/3.6297/3.629￠6.2-21￠7.5-24￠8.8-27￠10.0-32￠11.6-32￠13.0-35￠14.5-35￠15.8-38￠18.6-42￠21.4-48￠24.0-54￠27.2-5420/1.270￠4.8-19每英寸粗牙粗牙底孔-每英寸细牙细牙底孔-数/螺距深度数/螺距深度40/0.63524/1.058￠2.4-10￠3.4-1632/0.79428/0.90726/0.97726/0.97722/1.15520/1.27018/1.41116/1.58816/1.58814/1.81414/1.81412/2.11711/2.30910/2.5409/2.8229/2.8228/3.1758/3.1758/3.1757/3.6297/3.6296/4.2336/4.233￠3.8-12￠4.4-14￠5.1-15￠6.0-15￠6.5-17￠8.0-19￠9.4-22￠10.8-24￠12.4-24￠13.6-27￠15.2-27￠16.4-32￠19.4-35￠22.2-38￠25.0-42￠28.2-42￠31.0-48￠34.2-48￠37.4-48￠40.0-54￠46.2-54￠51.8-63￠58.2-63注意：in为英寸符号，一英寸等于25.4毫米。 底孔尺寸均为加工螺纹孔时专用尺寸。
深度尺寸均为加工螺纹孔时光孔深度尺寸。 （规定为15倍螺距） 惠氏螺纹为紧固件螺纹。公称直径为螺纹大径。
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