名義尺 寸大徑螺距 每英寸 牙數(shù)中徑小徑牙型高 底孔直 徑 bammmmtpimm外螺紋h1mm d=dpd2=d2d3 no.14ba10.23110.40.860.720.140.75 no.13ba1.20.25101.61.050.90.150.95 no.12ba1.30.2890.711.130.960.171 no.11ba1.50.3181.931.3151.130.1851.2 no.10ba1.70.3572.571.491.280.211.35 no.9ba1.90.3965.121.6651.430.2351.5 no.8ba2.20.4359.071.941.680.261.8 no.7ba2.50.4

公制螺紋/英制螺紋規(guī)格一覽表 外螺紋大徑（單位mm）－－－－－－－內(nèi)螺紋小徑（單位mm）－－－－－－－ 序號(hào)規(guī)格型號(hào)最大最小公差最大最小公差 1m10*19.9749.7940.1809.1578.9170.240 2m12*1.511.96811.7320.23610.67610.3760.300 3m14*1.513.96813.7320.23612.67612.3760.300 4m16*1.515.96815.7320.23614.67614.3760.300 5m18*1.517.96817.7320.23616.67616.3760.300 6m20*1.519.96819.7320.23618.67618.3760.300 7m22*1.521.96821.73

公稱 口徑 pvc/ppr 管外徑 英寸 無(wú)縫鋼管尺寸 gb/t17395 -2008 螺紋 代號(hào) 尺寸 代號(hào) 大徑 d=d mm 中徑 d2=d2 mm 小徑 d1=d1 mm 螺距 p mm 每英寸 牙數(shù) n 牙型 高度 h1 底孔 尺寸 mm g1/161/16＂7.7237.1426.5516.8 dn61分φ10*2g1/81/8＂9.7289.1478.5668.8 dn82分φ13*2g1/41/4＂13.15712.30111.44511.7 dn10upvc163分φ17*2g3/83/8＂16.66215.80614.9515.2 dn15upvc204分φ21*3g1/21/2＂20.95519.79318.63119.0 g5/85/8＂22.91121.7

101520253240506580100 1/4"1/2"3/4"1"11/4"11/2"2"21/2"3"4" 鋼管a17.221.326.933.742.448.360.376.188.9114.3 外徑b141825323845577689108 125150200250300350400450500600 5"6"8"10"12"14"16"18"20"24" 鋼管a139.7168.3219.1273323.9355.36406.4457508610 外徑b133159219273325377426480530630 700800900100012001400160018002000 28"32"

no.1-64(1.854)1.551.5821.425no.0-80(1.524)1.251.3051.182 no.2-56(2.184)1.801.8711.695no.1-72(1.854)1.551.6121.474 no.3-48(2.515)2.102.1461.941no.2-64(2.184)1.851.9121.756 no.4-40(2.845)2.302.3852.157no.3-56(2.515)2.102.1972.025 no.5-40(3.175)2.602.6972.487no.4-48(2.845)2.402.4582.271 no.6-32(3.505)2.802.8952.642no.5-44(3.175)2.702.7402.551 no.8-32(4.166)3

基本尺寸大徑螺距 每英寸牙 數(shù)中徑小徑牙型高度圓弧尺寸底孔尺寸 外徑 英寸mmmmtpimm外螺紋h1rmmmm d=dpd2=d2d3公稱內(nèi)徑英寸 r1/161/16＂7.7230.907287.1426.5610.5810.1256.4dn151/24分21.3 r1/81/8＂9.7280.907289.1478.5660.5810.1258.4dn203/426.9 r1/41/4＂13.1571.3371912.30111.4450.8560.18411.2dn25133.7 r3/83/8＂16.6621.3371915.80614.950.8560.18414.75dn321.2542.4 r1/21/2＂20.955

名義尺寸大徑螺距 每英寸 牙數(shù)中徑小徑牙型高底孔直徑 bammmmtpimm外螺紋h1mm d=dpd2=d2d3 no.14ba10.23110.40.860.720.140.75 no.13ba1.20.25101.61.050.90.150.95 no.12ba1.30.2890.711.130.960.171 no.11ba1.50.3181.931.3151.130.1851.2 no.10ba1.70.3572.571.491.280.211.35 no.9ba1.90.3965.121.6651.430.2351.5 no.8ba2.20.4359.071.941.680.261.8 no.7ba2.50.48

名義尺寸大徑螺距 每英寸牙 數(shù)中徑小徑牙型高底孔直徑 bammmmtpimm外螺紋h1mm d=dpd2=d2d3 no.14ba10.23110.40.860.720.140.75 no.13ba1.20.25101.61.050.90.150.95 no.12ba1.30.2890.711.130.960.171 no.11ba1.50.3181.931.3151.130.1851.2 no.10ba1.70.3572.571.491.280.211.35 no.9ba1.90.3965.121.6651.430.2351.5 no.8ba2.20.4359.071.941.680.261.8 no.7ba2.50.48

mm 鉆后 不鉸孔 鉆后 鉸孔 鏜后 鉸孔 鏜后 不鉸孔 z1/8"8.78.4 z1/4"11.310.7 z3/8"14.814 z1/2"18.317.5 z3/4"23.722.8 z1"29.628.628.6+0.1429.6+0.14 z11/4"38.537.337.3 +0.17 38.5 +0.17 z11/2"44.543.343.3+0.1744.5+0.17 z2"575555+0.257+0.2 mm d鉆孔直徑d鉆孔直徑鏜孔直徑 g1/8"8.8g1"30.530.5+0.17 g1/4"11.7g11/4"39.2+0.17 g3/8"

螺栓規(guī)格頂帽直徑頂帽長(zhǎng)度螺距頂帽倒角 m4740.70.3 m58.550.80.3 m610610.3 m812.581.250.3 m1015101.50.5 m1218121.750.5 m14211420.5 m16241620.5 m2030202.51 m24362431 m3042303.51 m36503641.6 m4258424.21.6

公制粗螺紋公制細(xì)螺紋 規(guī)格標(biāo)準(zhǔn)徑最大最小規(guī)格標(biāo)準(zhǔn)徑最大最小規(guī)格 m1.0*0.250.750.7850.729m1.0*0.20.80.8210.783m15*1.0 m1.1*0.250.850.8850.829m1.1*0.20.90.9210.883m16*1.5 m1.2*0.250.950.9850.929m1.2*0.211.0210.983m16*1.0 m1.4*0.31.11.1421.075m1.4*0.21.21.2211.183m17*1.5 m1.6*0.351.251.3211.221m1.6*0.21.41.4211.383m17*1.0 m1.7*0.351.351.4211.321m1.7*0.21.451.51.46m18*2.0 m1.8*

粗牙普通螺紋基本尺寸 公稱直徑-d(毫米）螺距-t（毫米）(底孔) m10.250.8 m20.401.6 m30.502.5 m40.703.3 m50.804.2 m61.005 m71.006 m81.256.8 m91.257.8 m101.508.5 m111.509.5 m121.7510.3 m142.0012 m162.0014 m182.5015.5 m202.5017.5 m222.5019.5 m243.0021 m273.0024 m303.5026.5 m333.5029.5 m364.0032 m394.0035 m424.5037.5 m454.5040.5 m485.0043 m525.

螺紋規(guī)格表 平行螺紋 螺紋的種類記號(hào)規(guī)格螺紋山的角度size推拔牙規(guī)規(guī)格 公制普通螺紋 jisb0205b0215jisb0251 jisb02094h、5h、6h、7h 公制細(xì)螺紋jisb0207b0215 4h、6h、8g、8g jisb0052 m jisb02111~300 公制普通螺紋 jisb0205jisb0251 jisb0209 1級(jí)、2級(jí)、3級(jí) 付屬書 公制細(xì)螺紋 jisb0207jisb0252 jisb0211付屬書 美制普通螺紋uncjisb0206no.1~43b、2b、1bjisb0255jisb0210 美制細(xì)螺紋unfjisb0208no.0~11/23a、2a、1aji

公制螺紋規(guī)格一覽表 2009-10-9外螺紋大徑(單位mm)-----------------內(nèi)螺紋小徑(單位mm)----------------- 序號(hào)規(guī)格型號(hào)最大最小公差最大最小公差 1m10*19.9749.7940.1809.1578.9170.240 2m12*1.511.96811.7320.23610.67610.3760.300 3m14*1.513.96813.7320.23612.67612.3760.300 4m16*1.515.96815.7320.23614.67614.3760.300 5m18*1.517.96817.7320.23616.67616.3760.300 6m20*1.519.96819.7320.23618.67618.376

第一章國(guó)標(biāo)螺紋的一般知識(shí) 一.螺紋的分類 1.螺紋分內(nèi)螺紋和外螺紋兩種； 2.按牙形分可分為：１）三角形螺紋２）梯形螺紋３）矩形螺紋４）鋸齒形螺紋； 3.按線數(shù)分單頭螺紋和多頭螺紋； 4.按旋入方向分左旋螺紋和右旋螺紋兩種,右旋不標(biāo)注，左旋加lh，如m24×1.5lh； 5.按用途不同分有：米制普通螺紋、用螺紋密封的管螺紋、非螺紋密封的管螺紋、60°圓錐管螺 紋、米制錐螺紋等 二.米制普通螺紋 1.米制普通螺紋用大寫m表示，牙型角2α=60°（α表示牙型半角）； 2.米制普通螺紋按螺距分粗牙普通螺紋和細(xì)牙普通螺紋兩種； 2.1.粗牙普通螺紋標(biāo)記一般不標(biāo)明螺距，如m20表示粗牙螺紋；細(xì)牙螺紋標(biāo)記必須標(biāo)明螺距， 如m30×1.5表示細(xì)牙螺紋、其中螺距為1.5。 2.2.普通螺紋用于機(jī)械零件之間的連接和緊固，一

npt英制螺紋標(biāo)準(zhǔn)與技術(shù)數(shù)據(jù) 螺紋規(guī)格螺距外徑c1底徑螺紋標(biāo)號(hào)螺牙角度備注 npt1/41.41113.6161860 npt3/81.41117.0551860 npt1/21.81421.2231460 npt5/81.81426.5681460 npt12.20833.227111/260 npt11/42.20841.984111/260 npt11/22.20848.053111/260 npt22.20860.091111/260 npt21/23.17572.699860 npt33.17588.608860 npt31/23.175100.013860 pt：美國(guó)標(biāo)準(zhǔn)的60度錐管螺紋 美制一般密封管螺紋的基本尺寸： 尺寸 代號(hào) 牙數(shù)

公稱直徑螺距公稱直徑螺距公稱直徑螺距 10.25121.75364 20.4142394 2.50.45162424.5 30.5182.5454.5 3.50.5202.5485 40.7222.5525 50.8243565.5 61273605.5 81.25303.5646 101.5333.5686 公稱直徑牙數(shù)大經(jīng)小徑公稱直徑牙數(shù)大經(jīng)小徑 3/16244.633.77/8921.9619.3 1/4206.25.11825.1122 5/16187.786.511/8728.2524.7 3/8169.367.91 1 /4731.4227.9 7/161410.939.31 1 /263

英制螺紋尺寸公差表 單位：毫米 規(guī)格代號(hào)系列 代號(hào) 等 級(jí) 螺距 外螺紋內(nèi)螺紋 名義直徑每英寸牙數(shù)外徑中徑內(nèi)徑小徑中徑大徑 10.060—80（0#—80）unf 20.31751.5113–0.081281.30556–0.045721.122681.1811+0.124461.3182+0.058421.524 30.31751.5240–0.081281.3182–0.033021.135381.1811+0.124461.3182+0.043181.524 20.073—64（1#—64）unc 20.3968751.83896–0.096521.58242–0.05081.351281.42494+0.157481.59766+0.066041.8542 30.396875

英制螺紋尺寸公差表

序號(hào)螺孔規(guī)格螺孔計(jì)算直徑鉆頭直徑_鑄鐵鉆頭直徑_鋼備注 13/32"(φ2.38)×56φ1.86φ1.9φ2 21/8"(φ3.175)×44φ2.52φ2.5φ2.6 39/64"(φ3.57)×40φ2.85φ2.9φ3 411/64"(φ4.37)×40φ3.65φ3.7φ3.8 53/16"(φ4.76)×32φ3.86φ3.9φ4 63/16"(φ4.76)×28φ3.73φ3.8φ3.9 715/64"(φ5.95)×28φ5φ5.1 81/4"(φ6.35)×24φ5.15φ5.2φ5.3 91/4"(φ6.35)×40φ5.63φ5.7φ5.8 109/32"(φ7.14)×28φ6.11φ6.1φ6.2 115/16"(φ7.94)×

公制、美制和英制螺紋標(biāo)準(zhǔn) npt，pt，g都是管螺紋． npt是national(american)pipethread的縮寫，屬於美國(guó)標(biāo)準(zhǔn)的60度錐管螺紋，用於北 美地區(qū)．國(guó)家標(biāo)準(zhǔn)可查閱gb/t12716-1991 pt是pipethread的縮寫，是55度密封圓錐管螺紋，屬惠氏螺紋家族，多用於歐洲及英聯(lián)邦國(guó) 家．常用於水及煤氣管行業(yè)，錐度規(guī)定為1:16．國(guó)家標(biāo)準(zhǔn)可查閱gb/t7306-2000 g是55度非螺紋密封管螺紋，屬惠氏螺紋家族．標(biāo)記為g代表圓柱螺紋．國(guó)家標(biāo)準(zhǔn)可查閱 gb/t7307-2001 另外螺紋中的1/4、1/2、1/8標(biāo)記是指螺紋尺寸的直徑，單位是英吋． 行內(nèi)人通常用分來(lái)稱呼螺紋尺寸，一吋等於８分，1/4吋就是２分，如此類推． g好像就是管螺紋的統(tǒng)稱(guan)，55，60度的劃分屬于功能性的

英制螺紋對(duì)應(yīng)公制（mm)底孔直徑公制螺紋底孔直徑 1/8"3.182.70m1.00.80 5/32"3.973.30m2.01.80 3/16"4.763.80m3.02.50 1/4"6.355.10m4.03.30 5/16"7.946.60m5.04.20 3/8"9.538.00m6.05.00 7/16"11.119.40m7.06.00 1/2"12.7010.70m8.06.80 5/8"15.8813.70m9.07.80 3/4"19.0516.70m10.08.50 7/8"22.2319.50m12.010.30 1"25.4022.40m14.012.00 m16.014.00 m18.015.50 m20.017.50 m22.019.50 m24.