公制螺纹加工内外径表
公制螺纹英制螺纹规格一览表
公制螺纹/英制螺纹规格一览表发布时间：10-06-21 来源：点击量：5424 字段选择：大中小2009-10-9外螺纹大径（单位mm）－－－－－－－－－－－－－－－－-内螺纹小径（单位mm）－－－－－－－－－－－－－－－－-序号规格型号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*1.521.96821.7320.23620.67620.3760.300 8M24*1.523.96823.7320.23622.67622.3760.300 9M26*1.525.96825.7320.23624.67624.3760.300 10M27*1.526.96826.7320.23625.67625.3760.300 11M30*1.529.96829.7320.23628.67628.3760.300 12M27*226.96226.6820.28025.21024.8350.375 13M30*229.96229.6820.28028.21027.8350.375 14M33*232.96232.6820.28031.21030.8350.375 15M36*235.96235.6820.28034.21033.8350.375 16M42*241.96241.6820.28040.21039.8350.375英制螺纹规格一览表外螺纹大径（单位mm）内螺纹小径（单位mm）序号规格型号最大最小公差最大最小公差1G1/8-289.7289.5140.2148.8488.5660.282 2G1/4-1913.15712.9070.25011.89011.4450.445 3G3/8-1916.66216.4120.25015.39514.9500.445 4G1/2-1420.95520.6710.28419.17218.6310.541 5G3/4-1426.44126.1570.28424.65824.1170.541 6G1-1133.24932.8890.36030.93130.2910.640 7G11/4-1141.91041.5500.36039.59238.9520.640 8G11/2-1147.80347.4430.36045.48544.8450.640类别标准名称标准号普通螺纹普通螺纹基本牙型GB/T192 —1981普通螺纹直径与螺距系列GB/T193 —1981普通螺纹基本尺寸GB/T196 —1981普通螺纹公差与配合GB/T197 —1981普通螺纹偏差表GB/T2516 —1981商品紧固件的普通螺纹选用系列JB/T7912 —1999商品紧固件的中等精度普通螺纹极限尺寸GB/T9145 —1988光学螺纹光学仪器特种细牙螺纹ZBN30006—1988光学仪器用目镜螺纹JB/T8204—1995光学仪器用短牙螺纹JB/T5450-1991紧配合螺纹过渡配合螺纹GB/T1167—1996过盈配合螺纹GB/T1181—1998小螺纹小螺纹牙型GB/T1505 4.1—1994 小螺纹直径与螺距系列GB/T1505 4.2—1994小螺纹基本尺寸GB/T1505 4.3—1994小螺纹公差GB/T15054.4-1994小螺纹极限尺寸GB/T15054.5-1994MJ螺纹MJ螺纹基本牙型GJB/T3.1 —1982 MJ螺纹螺栓与螺母螺纹的尺寸与公差GJB/T3.2 —1982MJ螺纹管路件螺纹的尺寸与公差GJB/T3.3 —1985MJ螺纹结构件的尺寸与公差GJB/T3.4 —1985MJ螺纹计算公式GJB/T3.5 —1985MJ螺纹首尾GJB52-1985梯形螺纹梯形螺纹牙型GB/T5796 .1—1986 梯形螺纹直径与螺距系列GB/T5796 .2—1986梯形螺纹基本尺寸GB/T5796 .3—1986梯形螺纹公差GB/T5796 .4—1986梯形螺纹极限尺寸GB/T12359—1990机床梯形螺纹丝杠、螺母技术条件JB/T2886—1992锻钢阀门用短牙梯形螺纹JB/TQ374—1985锯齿形螺纹锯齿形(3 °、30°)螺纹牙型GB/T13576.1—1992锯齿形(3 °、30°)螺纹直径与螺距系列GB/T13576.2—1992锯齿形(3 °、30°)螺纹基本尺寸GB/T13576.3—1992锯齿形(3 °、30°)螺纹公差GB/T13576.4—1992水压机45 °锯齿形螺纹牙型与基本尺寸JB2076—1984管螺纹用螺纹密封的管螺纹GB/T7306 —1987 非螺纹密封的管螺纹GB/T7307 —198760°圆锥管螺纹GB/T12716—1991米制锥螺纹GB/T1415—1992管路旋入端用普通螺纹尺寸系列GB/T1414—1978气瓶专用螺纹GB/T8335-1998通用基准螺纹术语GB/T1479 1—1993公制粗螺纹标准公制细螺纹标准规格标准径最大最小规格标准径最大最小规格标准径最大最小M1.0*0.25 0.75 0.785 0.729 M1.0*0.2 0.8 0.821 0.783 M15*1.0 14 14.353 13.917 M1.1*0.25 0.85 0.885 0.829 M1.1*0.2 0.9 0.921 0.883 M16*1.5 14.5 14.676 14.376 M1.2*0.25 0.95 0.985 0.929 M1.2*0.2 1 1.021 0.983 M16*1.0 15 15.153 14.917 M1.4*0.3 1.1 1.142 1.075 M1.4*0.2 1.2 1.221 1.183 M17*1.5 15.5 15.676 15.376 M1.6*0.35 1.25 1.321 1.221 M1.6*0.2 1.4 1.421 1.383 M17*1.0 16 16.153 15.917 M1.7*0.35 1.35 1.421 1.321 M1.7*0.2 1.45 1.5 1.46 M18*2.0 16 16.21 15.835 M1.8*0.35 1.45 1.521 1.421 M1.8*0.2 1.6 1.621 1.583 M18*1.5 16.5 16.676 16.376 M2.0*0.4 1.6 1.679 1.567 M2.0*0.25 1.75 1.785 1.729 M18*1.0 17 17.153 16.917 M2.2*0.45 1.75 1.888 1.713 M2.2*0.25 1.95 1.985 1.929 M20*2.0 18 18.21 17.835 M2.3*0.4 1.9 1.979 1.867 M2.3*0.25 2.05 2.061 2.001 M20*1.5 18.5 18.676 18.376 M2.5*0.45 2.1 2.138 2.013 M2.5*0.35 2.2 2.221 2.121 M20*1.0 19 19.153 18.917 M2.6*0.45 2.2 2.238 2.113 M2.5*0.35 2.2 2.246 2.186 M22*2.0 20 20.21 19.835 M3.0*0.5 2.5 2.599 2.459 M3.0*0.35 2.7 2.721 2.621 M22*1.5 20.5 20.676 20.376 M3.0*0.6 2.4 2.44 2.28 M3.5*0.35 3.2 3.221 3.121 22*1.0 21 21.153 20.917 M3.5*0.6 2.9 3.01 2.85 M4.0*0.5 3.5 3.599 3.459 M24*2.0 22 22.21 21.835 M4.0*0.7 3.8 3.422 3.242 M4.5*0.5 4 4.099 3.959 M24*1.5 22.5 22.676 22.376M4.0*0.75 3.25 3.326 3.106 M5.0*0.5 4.5 4.599 4.459 M24*1.0 23 23.153 22.917 M4.5*0.7 3.8 3.878 3.688 M5.5*0.5 5 5.099 4.959 M25*2.0 23 23.21 22.835 M5*0.8 4.2 4.334 4.134 M6.0*0.75 5.3 5.378 5.188 M25*1.5 23.5 23.676 23.376 M5*0.9 4.1 4.17 3.98 M6.0*0.5 5.5 5.55 5.4 M25*1.0 24 24.153 23.917 M6*1.0 5 5.153 4.917 M7.0*0.75 6.3 6.378 6.188 M26*1.5 24.5 24.676 24.876 M7*1.0 6 6.153 5.917 M7.0*0.5 6.5 6.55 6.4 M27*2.0 25 25.21 24.735 M8*1.25 6.8 6.912 6.647 M8.0*1 7 7.153 6.917 M27*1.5 25.5 25.676 25.376 M9*1.25 7.8 7.912 7.647 M8.0*0.75 7.3 7.378 7.188 M27*1.0 26 26.153 25.735 M10*1.5 8.5 8.676 8.376 M8.0*0.5 7.5 7.52 7.4 M28*2.0 26 26.21 25.835 M11*1.5 9.5 9.676 9.376 M9.0*1 8 8.153 7.917 M28*1.5 26 26.676 26.376 M12*1.75 10.3 10.24 10.11 M9.0*0.75 8.3 8.378 8.188 M28*1.0 27 27.153 26.917 M14*2.0 12 12.21 11.84 M10*1.25 8.8 8.912 8.647 M30*3.0 27 27.252 26.752 M16*2.0 14 14.21 13.84 M10*1.0 9 9.153 8.917 M30*2.0 28 28.21 27.835 M18*2.5 15.5 15.744 15.29 M10*0.75 9.3 9.378 9.188 M30*1.0 28 28.676 28.376 M20*2.5 17.5 17.744 17.29 M10*0.5 9.5 9.52 9.4 M32*2.0 30 29.153 28.917 M22*2.5 19.5 19.744 19.29 M11*1.0 10 10.15 9.917 M32*1.5 30 30.21 29.835 M24*3.0 21 21.252 20.75 M11*0.75 10.3 10.38 10.19 M33*3.0 30 30.676 30.376 M27*3.0 24 24.252 23.75 M12*1.5 10.5 10.68 10.38 M33*2.0 31 30.252 29.752 M30*3.5 26.5 26.771 26.21 M12*1.25 10.8 10.91 10.65 M33*1.5 31.5 31.21 30.835M12*1 11 11.15 10.92 M35*1.5 33.5 33.676 31.376M12*0.5 11.5 11.52 11.4 M36*3.0 33 33.252 32.752M14*0.5 12.5 12.68 12.38 M36*2.0 34 34.21 33.835M14*1.0 13 13.15 12.92 M36*1.5 34 34.676 34.376M15*1.50 13.5 13.68 13.38美制细螺纹标准公制迫牙丝攻钻孔径规格(丝牙外径）标准径最大最小规格精度等级7－G8 1.25 1.305 1.182 G4－G6 G7－G8 G9 NO.1-72(1.854) 1.55 1.612 1.474 M1.0*0.25 0.86 0.88 NO.2-64(2.134) 1.85 1.912 1.756 M1.1*0.25 0.96 0.98 NO.3-56(2.515) 2.1 2.197 2.025 M1.2*0.25 1.06 1.08 NO.4-48(2.345) 2.4 2.456 2.271 M1.4*0.3 1.24 1.25 NO.5-44(3.175) 2.7 2.74 2.551 M1.6*0.35 1.41 1.43 NO.6-40(3.505) 2.9 3.022 2.82 M1.7*0.35 1.51 1.53 NO.8-36(4.166) 3.5 3.606 3.404 M1.8*0.35 1.61 1.63NO.10-32(4.326) 4.1 4.165 3.963 M2.0*0.4 1.78 1.8NO.12-28(5.846) 4.6 4.724 4.496 M2.2*0.45 1.95 1.981\4-28 5.5 5.588 5.36 M2.3*0.4 2.08 2.15\16-24 6.9 7.035 6.782 M2.5*0.45 2.25 2.283\8-24 8.5 8.636 8.382 M2.6*0.45 2.35 2.387\16-20 9.9 10.033 9.729 M3.0*0.5 2.73 2.751\2-20 11.5 11.607 11.329 M3.5*0.6 3.17 3.29\16-18 12.9 13.081 12.751 M4.0*0.7 3.62 3.65 3.69 5\8-18 14.5 14.681 14.351 M5.0*0.8 4.56 4.6 4.64 3\4-16 17.5 17.678 17.323 M6.0*1.0 5.45 5.5 5.55 7\8-14 20.5 20.675 20.27 M7.0*1.0 6.45 6.5 6.55 1\8-12 23.2 23.571 23.114 M8.0*1.25 7.31 7.38 7.44 1-1\8-12 26.5 26.746 26.289 M10*1.5 9.18 9.25 9.32 1-1\4-12 29.5 29.921 29.464 M10*1.25 9.31 9.38 9.44 1-3\8-12 32 33.096 32.639 M12*1.75 11.04 11.12 11.21 1-1\2-12 36 36.271 35.814 M12*1.25 11.31 11.38 11.44英美联合螺纹标准英美联细螺纹标准规格钻头径2B螺纹径规格钻头径下孔径上限下限上限下限NO.1-64UNC 1.55 1.582 1.425 no.0-80unf 1.25 1.305 1.182 NO.2-56UNC 1.8 1.871 1.695 no.1-72unf 1.55 1.612 1.474 NO.3-48UNC 2.1 2.146 1.941 no.2-64-unf 1.85 1.912 1.756 NO.4-40UNC 2.3 2.385 2.157 no.3-565unf 2.1 2.197 2.025 NO.5-40UNC 2.6 2.679 2.487 no.4-48unf 2.4 2.458 2.271 NO.6-32UNC 2.8 2.895 2.642 no.5-44unf 2.7 2.74 2.551 NO.832UNC 3.4 3.53 3.302 no.6-40unf 2.9 3.022 2.82 NO.10-24UNC 3.9 3.926 3.683 no.8-36unf 3.5 3.606 3.404 NO.12-24UNC 4.5 4.597 4.344 no.10-32unf 4.1 4.165 3.963 1\4-20UNC 5.1 5.257 4..979 no.12-28unf 4.6 4.724 4.496 5\16-18unc 6.6 6.731 6.401 1\4-28unf 5.5 5.588 5.363\8-16UNC 8 8.153 7.798 5\16-24unf 6.9 7.035 6.782 7\16-14UNC 9.4 9.55 9.144 3\8-24unf 8.5 8.636 8.382 1\2-13UNC 10.8 11.023 10.599 7\16-20unf 9.9 10.033 9.729 9\16-12UNC 12.2 12.446 11.989 1\2-unf 11.5 11.607 11.3295\8-11UNC 13.6 13.868 13.386 9\16-unf 12.9 13.081 12.75 3\4-10UNC 16.5 16.84 16.307 5\8-18unf 14.5 14.681 14.35 7\8-9UNC 19.5 19.761 19.177 3\4-16unf 17.5 17.678 17.32 1--8UNC 22.2 22.606 21.971 7\8-14unf 20.5 20.675 20.27 11\8-7UNC 25 25.349 24.813 1--12unf 23.2 23.571 23.11 11\4-7UNC 28.2 28.524 27.813 11\8-12unf 26.5 26.746 26.28 13\8-6UNC 30.8 31.115 30.353 11\4-12unf 29.5 29.921 29.46 11\2-6UNC 34 34.29 33.528 13\8-12unf 32.8 33.096 32.63 13\4-5UNC 39.5 39.827 38.964 11\2-12unf 36 36.271 35.81 2-41\2UNC 45.2 45.593 44.679惠式螺纹标准（旧英制牙）山数节距换算表规格钻头径A例B例山数(25.4) 节数*W1\8-40 2.65 2.6 100 0.254*W5\32-32 3.25 3.2 880 0.317 5*w3\16-24 3..75 3.7 772 0.351 8W1\4-20 5.1 5 64 0.396 9W5\16-18 6.6 5 60 0.423 3W3\8-16 8 6.5 56 0.453 6W7\16-14 9.4 7.9 48 0.529 2W1\2-12 10.7 9.310.5 44 0.577 3W9\16-12 12.3 12 40 0.635W5\8-11 13.7 13.5 36 0.705 6W3\4-10 16.7 16.5 32 0.793 8W7\8-9 19.5 19.3 28 0.907 1W1-8 22.4 22 24 1.058 3W1\8-7 25 24.8 20 1.27W11\4 28.3 28 18 1.411 1W13\8-6 30.5 30.3 16 1.587 5W11\2-6 33.8 33.5 14 1.814 3W15\8-5 36 35.7 13 1.953 8W13\4-5 39.2 39 12 2.116 7W11\8-5 41.8 41.5 11 2.309 1W2-41\2 45 44.7 10 2.54牙套螺纹攻用标准9 2.8222规格钻头径下孔径8 3.175上限下限7 3.6286M3*0.5 3.1 3.2 3.12 6 4.2333M4*0.7 4.2 4.3 4.17 5 5.08M5*0.8 5.2 5.33 5.16 41\2 5.6444M6*1 6.3 6.42 6.25 4 6.35M8*1.25 8.4 8.52 8.31 31\2 7.2571M10*1.5 10.5 10.62 10.37 31\2 7.8154M10*1.25 10.4 10.52 10.31 3 8.4667M10*1 10.3 10.42 10.25 27\8 8.8348M12*1.75 12.5 12.73 12.43 23\4 9.2364M12*1.5 12.5 12.62 12.37 25\8 9.6762M12*1.25 12.5 12.52 12.31 21\2 10.16M14*2 14.5 14.83 14349M14*1.5 14.5 14.62 14.37M16*2 16.5 16.83 16.49M16*1.5 16.5 16.62 16.37M18*2.5 19 19.04 18.58M18*1.5 18.5 18.62 18.37M20*2.5 21 21.04 20.58M20*1.5 20.5 20.62 20.37公制、美制和英制螺纹标准NPT，PT，G 都是管螺纹．NPT 是National (American) Pipe Thread 的缩写，属於美国标准的60 度锥管螺纹，用於北美地区．国家标准可查阅GB/T12716-1991 PT 是Pipe Thread 的缩写，是5 5 度密封圆锥管螺纹，属惠氏螺纹家族，多用於欧洲及英联邦国家．常用於水及煤气管行业，锥度规定为1:16．国家标准可查阅GB/T7306-2000 G 是55 度非螺纹密封管螺纹，属惠氏螺纹家族．标记为G 代表圆柱螺纹．国家标准可查阅GB/T7307-2001 另外螺纹中的1/4、1/2、1/8 标记是指螺纹尺寸的直径，单位是英吋．行内人通常用分来称呼螺纹尺寸，一吋等於8分，1/4 吋就是2分，如此类推．G 好像就是管螺纹的统称(Guan)，55，60度的划分属于功能性的，俗称管圆。
公制螺纹基本尺寸表
公制粗牙(普通)螺纹基本尺寸表公制细牙螺纹基本尺寸表企业安全生产费用提取和使用管理办法（全文）关于印发《企业安全生产费用提取和使用管理办法》的通知财企〔2012〕16号各省、自治区、直辖市、计划单列市财政厅（局）、安全生产监督管理局，新疆生产建设兵团财务局、安全生产监督管理局，有关中央管理企业：为了建立企业安全生产投入长效机制，加强安全生产费用管理，保障企业安全生产资金投入，维护企业、职工以及社会公共利益，根据《中华人民共和国安全生产法》等有关法律法规和国务院有关决定，财政部、国家安全生产监督管理总局联合制定了《企业安全生产费用提取和使用管理办法》。
现印发给你们，请遵照执行。
附件：企业安全生产费用提取和使用管理办法财政部安全监管总局二○一二年二月十四日附件：企业安全生产费用提取和使用管理办法第一章总则第一条为了建立企业安全生产投入长效机制，加强安全生产费用管理，保障企业安全生产资金投入，维护企业、职工以及社会公共利益，依据《中华人民共和国安全生产法》等有关法律法规和《国务院关于加强安全生产工作的决定》（国发〔2004〕2号）和《国务院关于进一步加强企业安全生产工作的通知》（国发〔2010〕23号），制定本办法。
第二条在中华人民共和国境内直接从事煤炭生产、非煤矿山开采、建设工程施工、危险品生产与储存、交通运输、烟花爆竹生产、冶金、机械制造、武器装备研制生产与试验（含民用航空及核燃料）的企业以及其他经济组织（以下简称企业）适用本办法。
第三条本办法所称安全生产费用（以下简称安全费用）是指企业按照规定标准提取在成本中列支，专门用于完善和改进企业或者项目安全生产条件的资金。
安全费用按照“企业提取、政府监管、确保需要、规范使用”的原则进行管理。
第四条本办法下列用语的含义是：煤炭生产是指煤炭资源开采作业有关活动。
非煤矿山开采是指石油和天然气、煤层气（地面开采）、金属矿、非金属矿及其他矿产资源的勘探作业和生产、选矿、闭坑及尾矿库运行、闭库等有关活动。
螺纹管件尺寸表.
螺纹管件尺寸表1. 平头外丝（短管）国际通用系列钢管(英制管) Inch Pipe公称通径 Nominal Diameter 外径 Outside DiameterD Sch40 STD Sch80 XS Sch160 XXSLDN NPS 8 1/4 13.5 ○ 60 90 120 150 18010 3/8 17.2 ○ 15 1/2 21.3 ○ ○ 20 3/4 26.7 ○ ○ 25 1 33.4 ○ ○ 32 1.1/4 42.2 ○ ○ 40 1.1/2 48.3 ○ ○ 50260.3○○国内沿用系列钢管(公制管) Metric Pipe公称通径 Nominal Diameter外径 Outside DiameterD 厚度 Thickness长度 LengthDN 10 14 2-560 90 120 150 18015 18 20 25 25 32 32 38 40 45 5057注：短管(英制管)有A 、B 、C 三种型式，短管(公制管)仅有C 型订货示例:A(NPT)1/2" Sch80 L150 304不锈钢(英制管),Φ18*2 L100 20钢(公制管)国际通用系列钢管(英制管) Inch Pipe公称通径 Nominal Diameter 外径 Outside DiameterD Sch40 STD Sch80 XS Sch160 XXSLDN NPS 8 1/4 13.5 ○ 60 90 120 150 18010 3/8 17.2 ○ 15 1/2 21.3 ○ ○ 20 3/4 26.7 ○ ○ 25 1 33.4 ○ ○ 32 1.1/4 42.2 ○ ○ 40 1.1/2 48.3 ○ ○ 50260.3○○国内沿用系列钢管(公制管) Metric Pipe公称通径 Nominal Diameter外径 Outside DiameterD 厚度 Thickness长度 LengthDN 10 14 2-560 90 120 150 18015 18 20 25 25 32 32 38 40 45 5057注：短管(英制管)有A 、B 、C 三种型式，短管(公制管)仅有C 型订货示例:A(NPT)1/2" Sch80 L150 304不锈钢(英制管),Φ18*2 L100 20钢(公制管)国际通用系列钢管(英制管) Inch Pipe公称通径 Nominal Diameter 外径 Outside DiameterD Sch40 STD Sch80 XS Sch160 XXSLDN NPS 8 1/4 13.5 ○ 60 90 120 150 18010 3/8 17.2 ○ 15 1/2 21.3 ○ ○ 20 3/4 26.7 ○ ○ 25 1 33.4 ○ ○ 32 1.1/4 42.2 ○ ○ 40 1.1/2 48.3 ○ ○ 50260.3○○国内沿用系列钢管(公制管) Metric Pipe公称通径 Nominal Diameter外径 Outside DiameterD 厚度 Thickness长度 LengthDN 10 14 2-560 90 120 150 18015 18 20 25 25 32 32 38 40 45 5057注：短管(英制管)有A 、B 、C 三种型式，短管(公制管)仅有C 型订货示例:A(NPT)1/2" Sch80 L150 304不锈钢(英制管),Φ18*2 L100 20钢(公制管)公称通径Nominal Diameter 螺纹长度Length ofThread方头管塞Square Head Plug圆头管塞Round Head Plug六角头管塞和接头Hex Head Plug and Bushing 方头高度Height ofSquare平面宽度Width OfFlats圆头直径Diameter ofRound Head全长Length平面宽度Width OfFlats六角头高度Hex HeadHeightDN NPS L2min Bmin Cmin D Lmin S Kmin Hmin 6 1/8 9.5 6 7.0 10 35 11.0 - 6 8 1/4 11.0 6 9.5 13 41 16.0 3 6 10 3/8 12.5 8 11.0 17 41 17.5 4 8 15 1/2 14.5 10 14.5 21 44 22.0 5 8 20 3/4 16.0 11 16.0 27 44 27.0 6 10 25 1 19.0 13 20.5 33 51 35.0 6 10 32 1.1/4 20.5 14 24.5 43 51 44.5 7 14 40 1.1/2 20.5 16 28.5 48 51 51.0 8 16 50 2 22.0 17 33.5 60 64 63.5 9 17 65 2.1/2 27.0 19 38.0 73 70 76.0 10 19 80 3 28.5 21 43.0 89 70 89.0 10 21 100 4 32.0 25 63.5 114 76 117.5 13 25公称通径Nominal Diameter 螺纹长度Length ofThread方头管塞Square Head Plug圆头管塞Round Head Plug六角头管塞和接头Hex Head Plug andBushing 方头高度Height ofSquare平面宽度Width OfFlats圆头直径Diameter ofRound Head全长Length平面宽度Width OfFlats六角头高度Hex HeadHeightDN NPS L2min Bmin Cmin D Lmin S Kmin Hmin 6 1/8 9.5 6 7.0 10 35 11.0 - 6 8 1/4 11.0 6 9.5 13 41 16.0 3 6 10 3/8 12.5 8 11.0 17 41 17.5 4 8 15 1/2 14.5 10 14.5 21 44 22.0 5 8 20 3/4 16.0 11 16.0 27 44 27.0 6 10 25 1 19.0 13 20.5 33 51 35.0 6 10 32 1.1/4 20.5 14 24.5 43 51 44.5 7 14 40 1.1/2 20.5 16 28.5 48 51 51.0 8 16 50 2 22.0 17 33.5 60 64 63.5 9 17 65 2.1/2 27.0 19 38.0 73 70 76.0 10 19 80 3 28.5 21 43.0 89 70 89.0 10 21 100 4 32.0 25 63.5 114 76 117.5 13 25公称通径Nominal Diameter管箍、管帽长度The Length of Coupling and Cap外径Outside Diameter 管帽顶厚End Wall Thickness 螺纹长度Length of ThreadE F D CminDN NPS 3000LB 6000LB 3000LB 6000LB 3000LB 6000LB 3000LB 6000LBB L2 Sch160 XXS Sch160 XXS Sch160 XXS Sch160 XXS6 1/8 32 32 19 - 16 22 5.0 - 6.5 6.5 8 1/4 35 35 25 27 19 25 5.0 6.5 8.0 10.0 10 3/8 38 38 25 27 22 32 5.0 6.5 9.0 10.5 15 1/2 48 48 32 33 29 38 6.5 8.0 11.0 13.5 20 3/4 51 51 37 38 35 44 6.5 8.0 12.5 14.0 25 1 60 60 41 43 44 57 9.5 11.0 14.5 17.5 32 1.1/4 67 67 44 46 57 64 9.5 11.0 17.0 18.0 40 1.1/2 76 76 44 48 64 76 11.0 12.5 18.0 18.5 50 2 86 86 48 51 76 92 12.5 16.0 19.0 19.0 65 2.1/2 92 92 60 64 92 108 16.0 19.0 23.5 29.0 80 3 108 108 65 68 108 127 19.0 22.0 26.0 30.5 100 4 121 121 68 75 140 159 22.0 28.5 27.5 33.0公称通径中心至端面外径壁厚螺纹长度AD Cmin弯头、三通、四通45°弯头DN NPS 2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB NPT Rc Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.58 1/4 21 25 29 17 19 22 22 25 33 3.0 3.5 6.5 8.0 10.0 10 3/8 25 29 33 19 22 25 25 33 38 3.0 3.5 7.0 9.0 10.5 15 1/2 29 33 38 22 25 29 33 38 46 3.0 4.0 8.0 11.0 13.5 20 3/4 33 38 44 25 29 33 38 46 56 3.0 4.5 8.5 12.5 14.0 25 1 38 44 51 29 33 35 46 56 62 3.5 5.0 10.0 14.5 17.5 32 1.1/4 44 51 60 33 35 43 56 62 75 4.0 5.5 10.5 17.0 18.0 40 1.1/2 51 60 64 35 43 44 62 75 84 4.0 5.5 11.0 18.0 18.5 50 2 60 64 83 43 45 52 75 84 102 4.5 7.0 12.0 19.0 19.0 65 2.1/2 76 83 95 52 52 64 92 102 121 5.5 7.5 15.5 23.5 29.0 80 3 86 96 106 64 64 79 110 121 146 6.0 9.0 16.5 26.0 30.0 100 4 106 114 114 79 79 79 146 152 152 6.5 11.0 18.5 27.5 33.0公称通径中心至端面外径壁厚螺纹长度AD Cmin弯头、三通、四通45°弯头DN NPS 2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB NPT Rc Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.58 1/4 21 25 29 17 19 22 22 25 33 3.0 3.5 6.5 8.0 10.0 10 3/8 25 29 33 19 22 25 25 33 38 3.0 3.5 7.0 9.0 10.5 15 1/2 29 33 38 22 25 29 33 38 46 3.0 4.0 8.0 11.0 13.5 20 3/4 33 38 44 25 29 33 38 46 56 3.0 4.5 8.5 12.5 14.0 25 1 38 44 51 29 33 35 46 56 62 3.5 5.0 10.0 14.5 17.5 32 1.1/4 44 51 60 33 35 43 56 62 75 4.0 5.5 10.5 17.0 18.0 40 1.1/2 51 60 64 35 43 44 62 75 84 4.0 5.5 11.0 18.0 18.5 50 2 60 64 83 43 45 52 75 84 102 4.5 7.0 12.0 19.0 19.0 65 2.1/2 76 83 95 52 52 64 92 102 121 5.5 7.5 15.5 23.5 29.0 80 3 86 96 106 64 64 79 110 121 146 6.0 9.0 16.5 26.0 30.0 100 4 106 114 114 79 79 79 146 152 152 6.5 11.0 18.5 27.5 33.0公称通径中心至端面外径壁厚螺纹长度AD Cmin弯头、三通、四通45°弯头DN NPS 2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB2000LB3000LB6000LB NPT Rc Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.58 1/4 21 25 29 17 19 22 22 25 33 3.0 3.5 6.5 8.0 10.0 10 3/8 25 29 33 19 22 25 25 33 38 3.0 3.5 7.0 9.0 10.5 15 1/2 29 33 38 22 25 29 33 38 46 3.0 4.0 8.0 11.0 13.5 20 3/4 33 38 44 25 29 33 38 46 56 3.0 4.5 8.5 12.5 14.0 25 1 38 44 51 29 33 35 46 56 62 3.5 5.0 10.0 14.5 17.5 32 1.1/4 44 51 60 33 35 43 56 62 75 4.0 5.5 10.5 17.0 18.0 40 1.1/2 51 60 64 35 43 44 62 75 84 4.0 5.5 11.0 18.0 18.5 50 2 60 64 83 43 45 52 75 84 102 4.5 7.0 12.0 19.0 19.0 65 2.1/2 76 83 95 52 52 64 92 102 121 5.5 7.5 15.5 23.5 29.0 80 3 86 96 106 64 64 79 110 121 146 6.0 9.0 16.5 26.0 30.0 100 4 106 114 114 79 79 79 146 152 152 6.5 11.0 18.5 27.5 33.010.六角头内外螺纹接头（补芯）公称通径Nominal Diameter 螺纹长度Length ofThread方头管塞Square Head Plug圆头管塞Round Head Plug六角头管塞和接头Hex Head Plug and Bushing 方头高度Height ofSquare平面宽度Width OfFlats圆头直径Diameter ofRound Head全长Length平面宽度Width OfFlats六角头高度Hex Head HeightDN NPS L2min Bmin Cmin D Lmin S Kmin Hmin 6 1/8 9.5 6 7.0 10 35 11.0 - 6 8 1/4 11.0 6 9.5 13 41 16.0 3 6 10 3/8 12.5 8 11.0 17 41 17.5 4 8 15 1/2 14.5 10 14.5 21 44 22.0 5 8 20 3/4 16.0 11 16.0 27 44 27.0 6 10 25 1 19.0 13 20.5 33 51 35.0 6 10 32 1.1/4 20.5 14 24.5 43 51 44.5 7 14 40 1.1/2 20.5 16 28.5 48 51 51.0 8 16 50 2 22.0 17 33.5 60 64 63.5 9 17 65 2.1/2 27.0 19 38.0 73 70 76.0 10 19 80 3 28.5 21 43.0 89 70 89.0 10 21 100 4 32.0 25 63.5 114 76 117.5 13 2511.同径六角双丝头公称通径Nominal Diameter 尺寸SizeDN NPS H1 H2 H3 WDsch80 sch1606 1/8 6 10 --- 26 5 4 8 1/4 6 15 --- 367 6 8×6 1/4×1/8 6 15 10 31 5 4 10 3/8 8 16 --- 40 10 8 10×8 3/8×1/4 8 16 15 39 7 6 15 1/2 8 20 --- 48 13 10 15×10 1/2×3/8 8 20 16 44 10 8 15×8 1/2×1/4 8 20 15 43 7 6 20 3/4 10 21 --- 52 18 14 20×15 3/4×1/2 10 21 20 51 13 10 20×10 3/4×3/8 10 21 16 47 10 8 25 1 10 25 --- 60 23 19 25×20 1×3/4 10 25 21 56 18 14 25×15 1×1/2 10 25 20 55 13 10 32 1.1/4 12 25 --- 62 31 28 32×25 1.1/4×1 12 25 25 62 23 19 32×20 11/4×3/4 12 25 21 58 18 14 32×15 1.1/4×1/2 12 25 20` 57 13 10 40 11/2 16 26 --- 68 36 32 40×32 1.1/2×1.1/4 16 26 25 67 31 28 40×25 1.1/2×1 16 26 25 67 23 19 40×20 1.1/2×3/4 16 26 21 63 18 14 40×15 1.1/2×1/2 16 26 20 62 13 10 50 2 18 27 --- 72 47 40 50×40 2×1.1/2 18 27 26 71 36 32 50×32 2×1.1/4 18 27 25 70 31 28 50×25 2×1 18 27 25 70 23 19 50×20 2×3/4 18 27 21 66 18 14 50×15 2×1/2 18 27 20 65 13 10 65 2.1/2 20 38 --- 96 57 5165×50 2.1/2×2 20 38 27 85 47 40 65×40 2.1/2×1.1/2 20 38 26 84 36 32 65×32 2.1/2×1.1/4 20 38 25 83 31 28 65×25 2.1/2×1 20 38 25 83 23 19 65×20 2.1/2×3/420 38 21 79 18 14 80 3 20 40 --- 100 70 63 80×65 3×2.1/2 20 40 38 98 57 51 80×50 3×2 20 40 27 87 47 40 80×40 3×1.1/2 20 40 26 86 36 32 80×32 3×1.1/4 20 40 25 85 31 28 80×253×120402585231912. 单头螺纹管箍公称通径Nominal Diameter 管箍、管帽长度 The Length of Coupling and Cap 外径 Outside Diameter 管帽顶厚 End Wall Thickness 螺纹长度 Length of Thread EFD Cmin DN NPS 3000LB 6000LB 3000LB 6000LB 3000LB 6000LB 3000LB 6000LB B L2 Sch160 XXS Sch160 XXS Sch160 XXS Sch160 XXS 6 1/8 32 32 19 - 16 22 5.0 - 6.5 6.5 8 1/4 35 35 25 27 19 25 5.0 6.5 8.0 10.0 10 3/8 38 38 25 27 22 32 5.0 6.5 9.0 10.5 15 1/2 48 48 32 33 29 38 6.5 8.0 11.0 13.5 20 3/4 51 51 37 38 35 44 6.5 8.0 12.5 14.0 25 1 60 60 41 43 44 57 9.5 11.0 14.5 17.5 32 1.1/4 67 67 44 46 57 64 9.5 11.0 17.0 18.0 40 1.1/2 76 76 44 48 64 76 11.0 12.5 18.0 18.5 50 2 86 86 48 51 76 92 12.5 16.0 19.0 19.0 65 2.1/2 92 92 60 64 92 108 16.0 19.0 23.5 29.0 80 3 108 108 65 68 108 127 19.0 22.0 26.0 30.5 1004121121687514015922.028.527.533.013.异径六角双丝头公称通径Nominal Diameter 尺寸SizeDN NPS H1 H2 H3 WDsch80 sch1606 1/8 6 10 --- 26 5 4 8 1/4 6 15 --- 367 6 8×6 1/4×1/8 6 15 10 31 5 4 10 3/8 8 16 --- 40 10 8 10×8 3/8×1/4 8 16 15 39 7 6 15 1/2 8 20 --- 48 13 10 15×10 1/2×3/8 8 20 16 44 10 8 15×8 1/2×1/4 8 20 15 43 7 6 20 3/4 10 21 --- 52 18 14 20×15 3/4×1/2 10 21 20 51 13 10 20×10 3/4×3/8 10 21 16 47 10 8 25 1 10 25 --- 60 23 19 25×20 1×3/4 10 25 21 56 18 14 25×15 1×1/2 10 25 20 55 13 10 32 1.1/4 12 25 --- 62 31 28 32×25 1.1/4×1 12 25 25 62 23 19 32×20 11/4×3/4 12 25 21 58 18 14 32×15 1.1/4×1/2 12 25 20` 57 13 10 40 11/2 16 26 --- 68 36 32 40×32 1.1/2×1.1/4 16 26 25 67 31 28 40×25 1.1/2×1 16 26 25 67 23 19 40×20 1.1/2×3/4 16 26 21 63 18 14 40×15 1.1/2×1/2 16 26 20 62 13 10 50 2 18 27 --- 72 47 40 50×40 2×1.1/2 18 27 26 71 36 32 50×32 2×1.1/4 18 27 25 70 31 28 50×25 2×1 18 27 25 70 23 19 50×20 2×3/4 18 27 21 66 18 14 50×15 2×1/2 18 27 20 65 13 1065 2.1/2 20 38 --- 96 57 5165×50 2.1/2×2 20 38 27 85 47 40 65×40 2.1/2×1.1/2 20 38 26 84 36 32 65×32 2.1/2×1.1/4 20 38 25 83 31 28 65×25 2.1/2×1 20 38 25 83 23 19 65×20 2.1/2×3/4 20 38 21 79 18 1480 3 20 40 --- 100 70 6380×65 3×2.1/2 20 40 38 98 57 51 80×50 3×2 20 40 27 87 47 40 80×40 3×1.1/2 20 40 26 86 36 32 80×32 3×1.1/4 20 40 25 85 31 28 80×25 3×1 20 40 25 85 23 1914.螺纹活接头公称通径Nominal Diameter外径OutsideDiameter壁厚Wall Thickness承插孔径SocketBore流通孔径Water way Bore承插孔深度Depth ofSocket公称装配长度Length AssemNominal Dmin Cmin d1 d2 Jmin LDN NPS 承插焊Socket螺纹Threaded承插焊Socket螺纹Threaded承插焊Socket承插焊、螺纹Socket &Threaded承插焊Socket承插焊、螺纹Socket &Threaded6 1/8 21.8 14.7 3.2 2.5 10.65 6.43 10 41.48 1/4 21.8 19.0 3.3 3.1 14.10 9.45 10 41.4 10 3/8 25.9 22.9 3.5 3.2 17.55 13.51 10 46.0 15 1/2 31.2 27.7 4.1 3.8 21.70 17.07 10 49.0 20 3/4 37.1 33.5 4.3 4.0 27.05 21.39 13 56.9 25 1 45.5 41.4 5.0 4.6 33.80 27.74 13 62.0 32 11/4 54.9 50.5 5.3 4.9 42.55 35.36 13 71.1 40 11/2 61.5 57.2 5.6 5.1 48.65 41.20 13 76.5 50 2 75.2 70.1 6.1 5.6 61.10 52.12 16 86.1 65 21/2 91.7 85.3 7.7 7.1 73.80 64.31 16 102.4 80 3 109.2 102.4 8.4 7.7 89.80 77.27 16 109.015.双头螺纹管帽公称通径Nominal Diameter管箍、管帽长度The Length of Coupling and Cap外径Outside Diameter 管帽顶厚End Wall Thickness 螺纹长度Length of ThreadE F D CminDN NPS 3000LB 6000LB 3000LB 6000LB 3000LB 6000LB 3000LB 6000LBB L2 Sch160 XXS Sch160 XXS Sch160 XXS Sch160 XXS6 1/8 32 32 19 - 16 22 5.0 - 6.5 6.5 8 1/4 35 35 25 27 19 25 5.0 6.5 8.0 10.0 10 3/8 38 38 25 27 22 32 5.0 6.5 9.0 10.5 15 1/2 48 48 32 33 29 38 6.5 8.0 11.0 13.5 20 3/4 51 51 37 38 35 44 6.5 8.0 12.5 14.0 25 1 60 60 41 43 44 57 9.5 11.0 14.5 17.5 32 1.1/4 67 67 44 46 57 64 9.5 11.0 17.0 18.0 40 1.1/2 76 76 44 48 64 76 11.0 12.5 18.0 18.5 50 2 86 86 48 51 76 92 12.5 16.0 19.0 19.0 65 2.1/2 92 92 60 64 92 108 16.0 19.0 23.5 29.0 80 3 108 108 65 68 108 127 19.0 22.0 26.0 30.5 100 4 121 121 68 75 140 159 22.0 28.5 27.5 33.016.承插活接头公称通径Nominal Diameter外径OutsideDiameter壁厚Wall Thickness承插孔径SocketBore流通孔径Water way Bore承插孔深度Depth ofSocket公称装配长度Length AssemNominalDmin Cmin d1 d2 Jmin LDN NPS 承插焊Socket螺纹Threaded承插焊Socket螺纹Threaded承插焊Socket承插焊、螺纹Socket &Threaded承插焊Socket承插焊、螺纹Socket &Threaded6 1/8 21.8 14.7 3.2 2.5 10.65 6.43 10 41.48 1/4 21.8 19.0 3.3 3.1 14.10 9.45 10 41.4 10 3/8 25.9 22.9 3.5 3.2 17.55 13.51 10 46.0 15 1/2 31.2 27.7 4.1 3.8 21.70 17.07 10 49.0 20 3/4 37.1 33.5 4.3 4.0 27.05 21.39 13 56.9 25 1 45.5 41.4 5.0 4.6 33.80 27.74 13 62.0 32 11/4 54.9 50.5 5.3 4.9 42.55 35.36 13 71.1 40 11/2 61.5 57.2 5.6 5.1 48.65 41.20 13 76.5 50 2 75.2 70.1 6.1 5.6 61.10 52.12 16 86.1 65 21/2 91.7 85.3 7.7 7.1 73.80 64.31 16 102.4 80 3 109.2 102.4 8.4 7.7 89.80 77.27 16 109.017. 圆头管塞公称通径Nominal Diameter 螺纹长度 Length of Thread 方头管塞Square Head Plug 圆头管塞 Round Head Plug 六角头管塞和接头 Hex Head Plug and Bushing 方头高度 Height of Square 平面宽度 Width Of Flats 圆头直径 Diameter of Round Head全长 Length 平面宽度 Width Of Flats 六角头高度 Hex Head Height DN NPS L2min Bmin Cmin D Lmin S Kmin Hmin 6 1/8 9.5 6 7.0 10 35 11.0 - 6 8 1/4 11.0 6 9.5 13 41 16.0 3 6 10 3/8 12.5 8 11.0 17 41 17.5 4 8 15 1/2 14.5 10 14.5 21 44 22.0 5 8 20 3/4 16.0 11 16.0 27 44 27.0 6 10 25 1 19.0 13 20.5 33 51 35.0 6 10 32 1.1/4 20.5 14 24.5 43 51 44.5 7 14 40 1.1/2 20.5 16 28.5 48 51 51.0 8 16 50 2 22.0 17 33.5 60 64 63.5 9 17 65 2.1/2 27.0 19 38.0 73 70 76.0 10 19 80 3 28.5 21 43.0 89 70 89.0 10 21 100432.02563.511476117.51325。
螺纹大径中径小径表
螺纹大径中径小径表什么叫螺纹的大径小径?一句话：牙顶叫大径，牙底叫小径——无论是内螺纹还是外螺纹。
如下图所示（左为外螺纹，右为内螺纹）：至于中径，内螺纹外螺纹都一样，指它们的山腰中点的值，中径是一个理论值，是否真的存在中径，就像黑洞，理论上有，谁都没见过标准来源：GB/T197-2033普通螺纹公差以下是公制6g外螺纹的大径中径小径表：6g公制外螺纹（即常用螺丝）的大径中径小径表单位：MM6H公制内螺纹（即常用螺母）的大径中径小径表接下来是公制6H内螺纹的大径中径小径表：单位：MM0.8 5.00 4.605 4.480 4.334 4.1341 6.00 5.5 5.350 5.153 4.91717.00 6.5 6.350 6.153 5.9178.007.3487.188 6.912 6.6479.008.3488.1887.9127.6471.510.009.2069.0268.6768.3761.511.0010.20610.0269.6769.37612.0011.06310.86310.44110.106214.0012.91312.70112.2111.835216.0014.91314.70114.2113.835218.0016.91316.70115.74415.2942.520.0018.618.37617.74417.294常用美制外螺纹的大径中径小径表下表中螺纹规格采用美制常用规范如4-40UNC，但其它尺寸统一采用的单位为公制毫米MM：2A11.0769410.815329.898389.7798.917943A25.425.01923.3375223.2079821.620481A25.3568224.9656624.1782623.964923.195282A25.3568225.095224.1782624.0360223.195283A25.425.1383824.2214424.1147623.23846美制内螺纹的大、中、小径下表螺纹规格为美制规范,如2-56UNC，但尺寸为公制单位毫米：4.826 4.31038 4.38404 3.9624 4.168145.4864 4.79806 4.90982 4.3434 4.5974 5.4864 4.79806 4.88188 4.3434 4.58978 5.4864 4.89712 5.0038 4.4958 4.72445.4864 4.89712 4.97586 4.4958 4.716786.35 5.5245 5.70992 4.9784 5.2578 6.35 5.5245 5.64896 4.9784 5.2578 6.35 5.5245 5.61594 4.9784 5.25018 6.35 5.76072 5.92582 5.3594 5.588 6.35 6.82752 5.86994 5.3594 5.5886.35 6.82752 5.842 5.3594 5.56267.93757.020567.22122 6.4008 6.731 7.93757.020567.15518 6.4008 6.731 7.93757.020567.11962 6.4008 6.6802 7.93757.249167.4295 6.78187.0358 7.93757.249167.37108 6.78187.0358 7.93757.249167.3406 6.7818 6.99516 9.5258.493768.709667.79788.1534 9.5258.493768.638547.79788.1534 9.5258.493768.602987.79788.08228 9.5258.836668.836668.3828.636 9.5258.836668.961128.3828.636 9.5258.836668.5130648.3829.4488 11.11259.9339410.167629.1449.5504 11.11259.9339410.088889.1449.5504 11.11259.9339410.050789.1449.44118 11.0667810.28710.492749.728210.033 11.0667810.28710.424169.728210.03311.0667810.28710.391149.72829.9466412.711.4311.6763810.591811.0236 12.711.4311.595110.591811.0236 12.711.4311.5519210.591810.88136 12.711.874512.0878611.328411.6078 12.711.874512.0167411.328411.6078 12.711.874511.9811811.328411.5239814.287512.9133613.1724411.988812.44614.287513.3705613.4823212.750812.9692415.87514.376414.6481813.385813.8684 15.87514.376414.5592813.385813.8684 15.87514.376414.5135613.385813.69314 15.87514.9580615.189214.35114.6812 15.87514.9580615.1104614.35114.6812 15.87514.9580615.0723614.35114.5542 19.0517.39917.691116.306816.8402 19.0517.39917.5945816.306816.8402 19.0517.39917.5437816.306816.6243 19.0518.0187618.2676817.322817.6784 19.0518.0187618.1838617.322817.6784 19.0518.0187618.1432217.322817.54632 22.22520.8483220.7035419.17719.7612 22.22520.8483220.599419.17719.7612 22.22520.8483220.5460619.17719.50974 22.22521.0464421.3156820.269220.6756 22.22521.0464421.2242420.269220.6756 22.22521.0464421.1810620.269220.49272 25.423.3375223.672821.97122.606 25.423.3375223.5610421.97122.606 25.423.3375223.5051621.97122.34438 25.424.2214424.498323.444223.8252 25.424.2214424.4068623.444223.825225.424.2214424.358623.444223.6601。
螺纹管件尺寸表
方头管塞
Square Head Plug
方头高度 平面宽度
Height of Width Of
Square
Flats
Bmin
Cmin
6
7.0
6
9.5
8
11.0
10
14.5
11
16.0
13
20.5
14
24.5
16
28.5
17
33.5
19
38.0
21
43.0
25
63.5
圆头管塞
六角头管塞和接头
Round Head Plug Hex Head Plug and Bushing
40 1.1/2 51 60 64 35 43 44 62 75 84 4.0 5.5 11.0 18.0 18.5
50 2 60 64 83 43 45 52 75 84 102 4.5 7.0 12.0 19.0 19.0
65 2.1/2 76 83 95 52 52 64 92 102 121 5.5 7.5 15.5 23.5 29.0
Flats Cmin 7.0 9.5 11.0 14.5 16.0 20.5 24.5 28.5 33.5 38.0 43.0 63.5
圆头管塞 Round Head Plug
六角头管塞和接头 Hex Head Plug and
Bushing
圆头直径 Diameter of Round Head
平面宽度 全长
Sch40 STD Sch80 XS
○ ○ ○ ○ ○ ○ ○ ○
Sch160 L
XXS
60 ○
90 ○
120 ○
150 ○
螺纹管件尺寸表
DN NPS LB LB LB LB LB LB LB LB LB LB LB LB NPT Rc
Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS Sch80 Sch160 XXS
6 1/8 21 21 25 17 17 19 22 22 25 3.0 3.0 6.5 6.5 6.5
32 1.1/4
67
67
44
46
57
64
9.5 11.0 17.0 18.0
40 1.1/2
76
76
44
48
64
76 11.0 12.5 18.0 18.5
50
2
86
86
48
51
76
92 12.5 16.0 19.0 19.0
65 2.1/2
92
92
60
64
92
108 16.0 19.0 23.5 29.0
40 1.1/2 51 60 64 35 43 44 62 75 84 4.0 5.5 11.0 18.0 18.5
50 2 60 64 83 43 45 52 75 84 102 4.5 7.0 12.0 19.0 19.0
65 2.1/2 76 83 95 52 52 64 92 102 121 5.5 7.5 15.5 23.5 29.0
1. 平头外丝（短管）
螺纹管件尺寸表
国际通用系列钢管(英制管) Inch Pipe 公称通径
Nominal Diameter
DN
NPS
8
1/4
10
3/8
15
1/2
20
3/4
最全的螺纹孔径对照表(公制-英制)
美制粗螺纹
规格
(UNC)
(螺丝牙外
径)
No.1-64(1.854)
No.2-56(2.184)
No.3-48(2.515)
No.4-40(2.845)
No.5-40(3.175)
No.6-32(3.505)
No.8-32(4.166) No.102N4o(.41.28-26) 24(5.486) 1/4 - 20
公制细螺纹
规格
M12*1.0 M12*0.5 M14*1.5 M14*1.0 M15*1.5 M15*1.0 M16*1.5 M16*1.0 M17*1.5 M17*1.0 M18*2.0 M18*1.5 M18*1.0 M20*2.0 M20*1.5 M20*1.0 M22*2.0 M22*1.5 M22*1.0 M24*2.0 M24*1.5 M24*1.0 M25*2.0 M25*1.5 M25*1.0 M26*1.5 M27*2.0 M27*1.5 M27*1.0 M28*2.0 M28*1.5 M28*1.0 M30*3.0 M30*2.0 M30*1.5 M30*1.0 M32*2.0 M32*1.5 M33*3.0 M33*2.0 M33*1.5 M35*1.5 M36*3.0 M36*2.0 M36*1.5
标准径
11.00 11.50 12.50 13.00 13.50 14.00 14.50 15.00 15.50 16.00 16.00 16.50 17.00 18.00 18.50 19.00 20.00 20.50 21.00 22.00 22.50 23.00 23.00 23.50 24.00 24.50 25.00 25.50 26.00 26.00 26.50 27.00 27.00 28.00 28.50 29.00 30.00 30.50 30.00 31.00 31.50 33.50 33.00 34.00 34.50
常用公制内外螺纹极限直径表
16.676
M20×2.5 φ17.5 M20×1.5 φ18.5 M22×2.5 φ19.5 M24×3 M27×3 φ21 φ24
17.294 ～ 17.744 18.376 ～ 18.676
17.23 φ17.31 φ18.57～ φ18.63～ 18.67 φ18.78 φ19.17～ φ19.22～ 19.23 φ19.31
M20×1 19.974 19.794 19.324 19.206 18.891 19.24 19.29 M20×1.5 19.968 19.732 18.994 18.854 18.344 18.90 18.95 M20×2 19.962 19.682 18.663 18.503 17.797 18.57 18.62 M22×1 21.974 21.794 21.324 21.206 20.891 21.24 21.29 M22×1.5 21.968 21.732 20.994 20.854 20.344 20.95 20.90 M22×2 21.962 21.682 20.663 20.503 19.797 20.57 20.62 M24×1 23.974 23.794 23.324 23.199 22.891 23.23 23.29 M24×1.5 23.968 23.732 22.994 22.844 22.344 22.89 22.95 M24×2 23.962 23.682 22.663 22.493 21.797 22.57 22.62 M27×1 26.974 26.794 26.324 26.199 25.891 26.23 26.29 M27×1.5 26.968 26.732 25.944 25.844 25.344 25.89 25.95 M27×2 26.962 26.682 25.663 25.493 24.797 25.56 25.62 1.螺胚直径指滚丝前的尺寸，数值为依经验公式计算而得，在实践中 需验证。