公制螺紋英制螺紋規(guī)格一覽表

名義尺寸大徑螺距 每英寸牙 數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

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

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 公稱直徑牙數大經小徑公稱直徑牙數大經小徑 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

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"

公制粗螺紋公制細螺紋 規(guī)格標準徑最大最小規(guī)格標準徑最大最小規(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*

mmmmmmmmmm螺距mmmm螺距mmmm螺距mmmm螺距mm 30.530.35 no.540no.5441/8"40 3.1750.6353.1750.57733.1750.635 40.740.5 no.832no.836 4.16560.79384.16560.7056 3/16"243/16"32 4.76251.05834.76250.7938 no.1024no.1032 4.82601.05834.82600.7938 50.850.5 6160.5 1/4"201/4"281/4"201/4"26 6.351.276.350.90716.351.276.350.9769 5/16"185/16"245/16"18

基本尺寸大徑螺距 每英寸牙 數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

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.

序號規(guī)格型號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)-1241.2294

公稱直徑(大徑)：螺距：中徑：246.103小徑：243.505 公制普通螺紋名義尺寸速查 計算公式為： h(原始三角形高度)=0.866025404p(螺距) 您可以直接通過在下表中選擇得到常用規(guī)格的尺寸。 下面可以迅速查詢米制普通螺紋名義的尺寸。范圍按iso261的第一系列直徑，還包括少量第 二系列直徑。先選擇公稱直徑，螺距選擇會變?yōu)橄鄳姆秶谝粋€螺距就是粗牙的螺距。 中徑(d2或d2)=d(大徑，公稱直徑)-0.75h 小徑(d1或d1)=d(大徑，公稱直徑)-1.25h 數值圓整到小數點后第三位。 m2506

公制螺紋規(guī)格一覽表 2009-10-9外螺紋大徑(單位mm)-----------------內螺紋小徑(單位mm)----------------- 序號規(guī)格型號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

公稱 口徑 pvc/ppr 管外徑 英寸 無縫鋼管尺寸 gb/t17395 -2008 螺紋 代號 尺寸 代號 大徑 d=d mm 中徑 d2=d2 mm 小徑 d1=d1 mm 螺距 p mm 每英寸 牙數 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

公制外螺紋規(guī)格表

第一章國標螺紋的一般知識 一.螺紋的分類 1.螺紋分內螺紋和外螺紋兩種； 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牙普通螺紋兩種； 2.1.粗牙普通螺紋標記一般不標明螺距，如m20表示粗牙螺紋；細牙螺紋標記必須標明螺距， 如m30×1.5表示細牙螺紋、其中螺距為1.5。 2.2.普通螺紋用于機械零件之間的連接和緊固，一

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"

[分享]公制、美制和英制螺紋標準區(qū)別 npt，pt，g都是管螺紋． npt是national(american)pipethread的縮寫，屬於美國標準的60度錐管螺紋，用於北美地區(qū)．國 家標準可查閱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，多用於歐洲及英聯邦國家．常 用於水及煤氣管行業(yè)，錐度規(guī)定為1:16．國家標準可查閱gb/t7306-2000 g是55度非螺紋密封管螺紋，屬惠氏螺紋家族．標記為g代表圓柱螺紋．國家標準可查閱gb/t7307- 2001 另外螺紋中的1/4、1/2、1/8標記是指螺紋尺寸的直徑，單位是英吋． 行內人通常用分來稱呼螺紋尺寸，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

gb/t1226-2001《一般壓力表》國家標準中規(guī)定，y-40壓力表的連接螺紋為m10×1，y-60 壓力表的連接螺紋為m14×1.5，y-100,150,200,250壓力表的連接螺紋為m20×1.5。在用 戶無特殊要求的情況下,制造商將按標準規(guī)定提供相應螺紋規(guī)格的壓力表。bsen837-1 pressuregauges壓力表歐標中規(guī)定，螺紋接頭有g1/8b，g1/4b，g3/8b，g1/2b四種管螺 紋和1/8-27nptext，1/4-18nptext，1/2-14nptext三種錐管螺紋，其中g3/8b為不推薦 規(guī)格。實際上，r1/8（zg1/8），r1/4（zg1/4），r1/2（zg1/2）也是壓力表常用的連接 螺紋規(guī)格 壓力表新國標《一般壓力表》gb/t1226-2001解讀 發(fā)布日期：2010-12-23瀏覽數

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公制螺紋打孔一覽表