公制美制英制螺纹对照表.xls

序号规格型号最大最小公差最小最大公差 17/16“-2011.07910.8740.2069.72810.0330.305 21/2“-2012.66712.4610.20611.32811.6080.279 39/16“-1814.25214.0310.22112.75113.0810.33 43/4“-1619.01218.7730.23917.32317.6780.356 57/8“-1422.18421.9230.26220.26920.6760.406 61(1/16)-1226.94426.6550.2924.68925.1460.457 71(5/16)-1233.29433.0050.2931.03931.4960.457 81(5/8)-1241.22940.940.2938.98939.4460.457 91(7/8)-1247.57947.290.2945.33945.7960.457 102(1/2)-1263.45263.1620.2961.21461.6710.457 序号规格型号最大最小公差最小最大公差 1M10*19.9749.7940.188.9179.1570.24 2M12*1.511.96811.7320.23610.37610.6760.3 3M14*1.513.96813.7320.23612.37612.6760.3 4M16*1.515.96815.7320.23614.37614.6760.3 5M18*1.517.96817.7320.23616.37616.6760.3 6M20*1.519.96819.7320.23618.37618.6760.3 7M22*1.521.96821.7320.23620.37620.6760.3 8M24*1.523.96823.7320.23622.37622.6760.3 9M26*1.525.96825.7320.23624.37624.6760.3 10M27*1.526.96826.7320.23625.37625.6760.3 11M30*1.529.96829.7320.23628.37628.6760.3 12M27*226.96226.6820.2824.83525.210.375 13M30*229.96229.6820.2827.83528.210.375 14M33*232.96232.6820.2830.83531.210.375 15M36*235.96235.6820.2833.83534.210.375 16M42*241.96241.6820.2839.83540.210.375 序号规格型号最大最小公差最小最大公差 1G1/8-289.7289.5140.2148.5668.8480.282 2G1/4-1913.15712.9070.2511.44511.890.445 3G3/8-1916.66216.4120.2514.9515.3950.445 4G1/2-1420.95520.6710.28418.63119.1720.541 5G3/4-1426.44126.1570.28424.11724.6580.541 6G1-1133.24932.8890.3630.29130.9310.64 7G11/4-1141.9141.550.3638.95239.5920.64 8G11/2-1147.80347.4430.3644.84545.4850.64 最小最大最小最大最小 8-320.15710.16310.13990.14280.1248 (0.164-32)3.99034.14273.55353.62713.1699 0 10-240.18180.1890.15860.16190.1379 (0.190-24)4.61774.80064.02844.11233.5027 0 12-240.20780.2150.18450.18790.1639 (0.216-24)5.27815.4614.68634.77274.1631 0 1/4-200.24080.24890.21270.21640.1876 (0.250-20)6.11636.32215.40265.49664.765 3.58 4.07 4.72 5.45 公称尺寸 和 螺纹系列 代号 英制管螺纹 公制/美制/英制螺纹对照表 美制外螺纹（2A）常用规格极限尺寸表（粗牙） 大径极限中径极限螺胚直径 小径max 美制细牙UNF 2A外螺纹大径UNFUN2B内螺纹小径（UN、UNF） 公制细牙6g外螺纹大径6H内螺纹小径 5/16-180.30260.31130.27120.27520.2431 (0.3175-18)7.6867.9076.88856.99016.1747 0 3/8-160.36430.37370.32870.33310.297 (0.375-16)9.25329.4928.3498.46077.5438 7/16-140.42580.43610.3850.38970.3485 (0.4375-14)10.815311.07699.7799.89848.8519 0 1/2-130.48760.49850.44350.44850.4041 (0.50-13)12.38512.661911.264911.391910.2641 9/16-120.54950.56090.50160.50680.4587 (0.5625-12)13.957314.246912.740612.872711.651 0 5/8-110.61130.62340.55890.56440.5119 (0.625-11)15.52715.834414.196114.335813.0023 0 3/4-100.73530.74820.67730.68320.6255 (0.750-10)18.676619.004317.203417.353315.8877 0 7/8-90.85920.87310.79460.80090.7368 (0.875-9)21.823722.176720.182820.342918.7147 1“-80.9830.9980.910.91680.8446 (1.000-8)24.968225.349223.11423.286721.4528 最小最大最小最大最小 8-360.15770.16320.14240.14520.1291 (0.164-36)4.00564.14533.6173.68813.2791 10-320.18310.18910.16580.16880.1508 (0.190-32)4.65074.80314.21134.28753.8303 0 12-280.20850.2150.18860.19180.1712 (0.216-28)5.29595.4614.79044.87174.3485 0 1/4-280.24250.2490.22250.22580.2052 (0.250-28)6.15956.32465.65155.73535.2121 5/16-240.30420.31140.28060.28430.2603 (0.3175-24)7.72677.90967.12727.22126.6116 0 3/8-240.36670.37390.3430.34680.3228 (0.375-24)9.31429.49718.71228.80878.1991 7/16-200.42810.43620.39950.40370.3749 (0.4375-20)10.873711.079510.147310.2549.5225 0 1/2-200.49060.49870.46190.46620.4374 (0.50-20)12.461212.66711.732311.841511.11 9/16-180.55240.56110.52050.5250.4929 (0.5625-18)14.03114.251913.220713.33512.5197 0 5/8-180.61490.62360.58280.58750.5554 (0.625-18)15.618515.839414.803114.922514.1072 0 3/4-160.73910.74850.70290.70790.6718 (0.750-16)18.773119.011917.853717.980717.0637 0 7/8-140.86310.87340.82160.8270.7858 (0.875-14)21.922722.184420.868621.005819.9593 1“-120.98680.99820.93820.94410.896 (1.000-12)25.064725.354323.830323.980122.7584 23.9 17.28 20.27 23.22 3.65 4.24 8.4 9.83 11.34 12.8 14.27 6.94 公称尺寸 和 UNC 螺纹系列 代号 UNF 美制外螺纹（2A）常用规格极限尺寸表（细牙） 大径极限中径极限螺胚直径 美制UNF螺纹常用规格 小径max 4.82 5.69 7.17 8.75 10.19 11.78 13.27 14.85 17.91 20.93 序号标记牙数外径内径刀具尺寸备注 13/4-16UNF-2B1619.0517.3317.500.05 27/8-14UNF-2B1422.22520.2620.460.05 37/16-20UNF-2B2011.11259.7389.880.05 49/16-18UNF-2B1814.287512.7612.90.05 55/8-18UNF-2B1815.87514.3514.50.05 序号公称直径牙数外径内径刀具尺寸备注 11-1/16-12UN-2B1226.987524.724.90.05 21-5/16-12UN-2B1233.337531.0531.30.05 31-5/8-12UN-2B1241.27538.9839.20.05 41-3/16-12UN2B1230.162527.8728.10.05 序号公称直径牙数外径内径刀具尺寸备注 1G1/8289.7288.5668.6960.05 2G1/41913.15711.44511.660.05 3G3/81916.66214.9515.170.05 4G1/21420.95518.63118.90.05 5G3/41426.44124.11724.380.05 6G7/81430.20127.87728.140.05 711133.24930.29130.610.05 8G1-1/41141.9138.95239.30.05 序号公称直径螺距外径内径刀具尺寸备注 116*1.51.51614.37614.50.05 218*1.51.51816.37616.50.05 322*1.51.52220.37620.50.05 427*222724.835250.05 533*22333O.835310.05 642*224239.835400.05 外螺纹内螺纹 -49/16“-19牙14.2813.08 -611/16-1617.4616.1 -813/16-1620.6419.28 -101-1425.423.57 -121(3/16)-123028.32 -161(7/16)-1236.5134.67 -201(11/16)-1242.8641.02 外螺纹内螺纹 -47/16”-2011.1110.03 -51/2”-2012.711.32 -69/16”-1814.2813.08 -83/4”-161917.68 -107/8”-1422.2220.68 -121(1/16)“-1226.9825.15 -161(5/16)“-1233.3331.5 -201(5/8)“-1241.2839.44 -241(7/8)“-1247.6245.8 -322(1/2)“-1263.561.67 美制UN螺纹常用规格 英制管螺纹常用规格 公制螺纹常用规格 A型美制螺纹（UNF）常用规格 C型JIC37度美制UNF螺纹常用规格 外螺纹内螺纹 -41/4”-1913.15711.55 -63/8”-1916.66214.95 -81/2”-1420.95518.63 -123/4”-1426.44124.11 -161”-1133.24930.29 -201(1/4)-1141.9138.95 英制圆锥 管螺纹 （BSPT） 常用规格 基面大径基准距离 1/4”-1913.1576 3/8”-1916.6626.4 1/2”-1420.9558.2 3/4”-1426.4419.5 1”-1133.24910.4 1(1/4)-1141.9112.7 美制圆锥 管螺纹 （NPT） 基面大径基准距离 1/8”-271