螺纹基本尺寸对照表精编版

1、英制管螺纹基本尺寸及公差（牙形角55o）BSPP螺纹代号G1/8× 28G1/4× 19G3/8× 19G1/2× 14G5/8× 14G3/4× 14G1× 11G1.1/4× 11G1.1/2× 11G2× 11G2.1/2 ” X11G3” X11G3.1/2 ” X11基本直径内螺纹外螺纹A 级B 级大径中径小径中径公差小径公差中径公差大径公差中径公差大径公差9.7289.1478.566+0.170+0.28200000-0.107-0.214-0.214-0.21413.15712.

2、30111.445+0.125+0.445-0.125-0.250-0.2500-0.25016.66215.80614.950+0.125+0.445000000-0.125-0.250-0.250-0.25020.95519.79318.631+0.142+0.541000000-0.142-0.284-0.284-0.28422.91121.74920.587+0.142+0.541000000-0.142-0.284-0.284-0.28426.44125.27924.117+0.142+0.541000000-0.142-0.284-0.284-0.28433.24931.77030

3、.291+0.180+0.640000000-0.180-0.360-0.360-0.36041.91040.43138.952+0.180+0.640000000-0.180-0.360-0.360-0.36047.80346.32444.854+0.180+0.640000000-0.180-0.360-0.360-0.36059.61458.13556.656+0.180+0.640000000-0.180-0.360-0.360-0.36075.18473.70572.226+0.217+0.640000000-0.217-0.434-0.434-0.43487.88486.40584

4、.926+0.217+0.640000000-0.217-0.434-0.434-0.434100.33098.85197.372+0.217+0.640000000-0.217-0.434-0.434-0.434英制锥管螺纹基本尺寸及公差（牙形角55o）BSPT基面上的直径基准长度有效螺纹长度圆锥内螺纹基面轴向螺纹代号大径中径小径基本最大最小基本最大最小位移偏差（ ± mm）R1/8×289.7289.1478.5664.04.93.16.57.45.61.1R1/4×1913.15712.30111.4456.07.34.79.711.08.41.7R3/8&

5、#215; 1916.66215.80614.9506.47.75.110.111.48.81.7R1/2×1420.95519.79318.6318.210.06.413.215.011.42.3R3/4×1426.44125.27924.1179.511.37.714.516.312.72.3R1× 1133.24931.77030.29110.412.78.116.819.114.52.9R1.1/4× 1141.91040.43138.95212.715.010.419.121.416.82.9R1.1/2× 1147.80346.32

6、444.84512.715.010.419.121.416.82.9R2× 1159.61458.13556.65615.918.213.623.425.721.12.9R2.1/2 ” X1175.18473.70572.22617.521.014.026.730.223.23.5R3” X1187.88486.40584.92620.624.117.129.833.326.33.51R3.1/2 ” X11100.33098.85197.37222.225.718.731.434.927.93.5美制管螺纹基本尺寸及公差（牙形角60o）UN(F)螺纹代号7/16× 20

7、UNF 1/2× 20UNF 9/16× 18UNF 3/4× 16UNF 7/8× 14UNF 1-1/16× 12UN 1-5/16× 12UN 1-5/8 × 12UN 1-7/8 × 12UN 2-1/2 × 12UN9/16× 18UNF11/16× 16UN13/16× 16UN1× 14UNF1-3/16× 12UN1-7/16× 12UN1-11/16× 12UN2× 12UN5/8× 18UNF 1

8、-1/16× 14UN外螺纹内螺纹公差等级公差等级2A2B大径中径小径小径中径大径最大最小最大最小最小最大最小最大JIC 螺纹11.07910.87410.25410.1479.5689.72810.03310.28710.42411.11312.66712.46111.84111.73211.15611.32811.60811.87512.01712.714.25214.03113.33513.22112.57312.75113.08113.37113.5214.28819.01218.77317.98117.85417.1217.32317.67818.01918.18419.0

9、522.18421.92321.00620.86920.02520.26920.67621.04621.22422.22526.94426.65525.5725.42524.42524.68925.14625.61325.80126.98833.29433.00531.9231.77330.77531.03931.49631.96332.15433.33841.22940.9439.88539.70538.7138.98939.44639.90140.09441.27547.57947.2946.20546.05345.0645.33945.79646.25146.44947.62563.45

10、263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS 螺纹14.25214.03113.33513.22112.57312.75113.08113.37113.5214.28817.42717.18816.39616.27415.53515.74816.10416.43116.58917.46320.59920.36119.56819.44418.70718.92319.27919.60619.76620.63825.35725.09524.17824.03623.19523.44423.82524.22124.40725.430.1

11、1929.8328.74528.59827.627.86428.32128.78828.97930.16336.46736.17735.09334.94333.94734.21434.67135.13835.33136.51342.81742.52741.44341.2940.29740.56441.02141.48841.68642.86350.75450.46549.3849.22548.23548.51448.97149.42649.62750.8SAE 螺纹15.83915.61814.92314.80314.16114.35114.68114.95815.1115.87526.947

12、26.68325.74325.60824.7424.96825.37525.78325.96126.987其它美制螺纹9/16× 16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8× 12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.2252-1/4 × 12UN57.10456.81555.7355.57554.58554.86455.32155.77655.97657.15注： UNC 粗牙螺纹系列，UNF

13、细牙螺纹系列，UNEF 超细牙螺纹系列，UN 不变螺距系列布锥管螺纹基本尺寸及公差 (牙形角 60o)NPT螺纹代号基面上的直径螺纹长度大径中径小径有效长度管端至基面长Z1/8 × 2710.2729.5198.76674.572Z1/4 ×1813.57212.44311.3149.55.080Z3/8 ×1817.05515.92614.79710.56.096Z1/2 ×1421.22319.77218.32113.58.028Z3/4 × 1426.56825.11723.666148.611Z1 × 11.533.22831

14、.46129.69417.510.160Z1.1/4×11.541.98540.21838.4511810.6882Z1.1/2× 11.548.05446.28744.52018.510.688Z2 × 11.560.09258.32556.5581911.074公制螺纹基本尺寸及公差(牙形角 60o)M基本直径螺纹代号大径中径小径M10X1109.3508.917M12X11211.35010.917M14X11413.35012.917M12X1.251211.18810.647M14X1.251413.18812.647M12X1.51211.02610.

15、376M14X1.51413.02612.376M16X1.51615.02614.376M18X1.51817.02616.373M20X1.52019.02618.376M22X1.52221.02620.376M24X1.52423.02622.376M26X1.52625.02624.376M27X1.52726.02625.376M30X1.53029.02628.376M33X1.53332.02631.376M36X1.53635.02634.376M39X1.53938.02637.376M42X1.54241.02640.376M27X22725.70124.835M30X2

16、3028.70127.835M33X23331.70130.835M36X23634.70133.835M39X23937.70136.835M42X24240.70139.835M45X24543.70142.835M52X25250.70149.835M60X26058.70157.835M64X26462.70161.835M72X27270.70169.835内 螺 纹外螺纹公差等级公差等级6H7H6g中径公差小径公差中径公差小径公差中径公差大径公差+0.150+0.236+0.190+0.300-0.026-0.0260000-0.138-0.206+0.160+0.236+0.20

17、0+0.300-0.026-0.0260000-0.144-0.206+0.160+0.236+0.200+0.300-0.026-0.0260000-0.144-0.206+0.180+0.265+0.224+0.335-0.028-0.0280000-0.160-0.240+0.180+0.265+0.224+0.335-0.028-0.0280000-0.160-0.240+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.19

18、0+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.18

19、2-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268+0.200+0.300+0.250+0.375-0.032-0.

20、0320000-0.182-0.268+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.

21、475-0.038-0.0380000-0.208-0.318+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318355 °

22、;圆锥管螺纹基本尺寸对照表最新下载-汇兴达55 °圆锥管螺纹基本尺寸对照表最新下载-汇兴达55 °圆锥管螺纹 (BSPT)螺纹基本尺寸大径螺距每英寸中小径径外mm牙型高度代号R1/16R1/8R1/4R3/8mm英寸d=D1/17.76"231/89.7"281/413."1573/816."662mmp0.9070.9071.3371.337牙数tpi28281919螺d2H1纹=Dd236.7.15420.581618.9.150.581476611.12.40.8563014514.15.90.856806504R18.11/2

23、20.1.819.1.162146/"95514793231R24.33/426.1.825.1.162141/"441142794173R33.2.30.31.1"2491121.4791097791R3112.38.41.40.11/4091191.479910431/"542R4112.34.47.46.11/2091181.479803324/"4255R59.2.36.58.2"6141161.47920913556R75.2.373.21171.4792184097051/22.51"2/22684.R87.2.

24、386.1.4793"8841193094052611131111R0.2.34".0311.551.4794091007211381363R5.2.35".4311.951.4795091407211631626R0.2.36".8311.351.47960918072聊城市鑫茂祥管业有限公司专业经营钢管规格：5mm*1mm 1020mm*200mm合金钢管、外径22mm-127mm冷轧无缝钢管、外径127mm-600mm，壁厚 16mm-100mm，外径精度 ±0.5%,壁厚精度 ±5%热轧中厚壁无缝钢管、 16Mn外径 400

25、1600mm、壁厚 20 60mm的大口径厚壁卷管，可定尺到16米及各种规格的无缝方管、异型无缝钢管等 . 常备钢管种类有: 构造用无缝钢管、流体用无缝钢管、液压无缝钢管、电力用无缝钢管、石油输送用无缝钢管、化肥设备用无缝钢管、煤矿用无缝钢管、不锈钢无缝钢管、化工用无缝钢管、纺织机械用无缝钢管、汽车；水利用无缝钢管，精密无缝钢管、光亮无缝钢管、军工医疗用无缝钢管、管道用无缝钢管、支柱用无缝钢管、合金无缝管、高压无缝管、大口径直缝焊管等。适用于工程、煤矿、纺织、电力、锅炉、机械、军工等各个领域。公司以良好的信用、优质的产品、雄厚的实力、低廉的价钱享誉全国30 多个省、市、自治区、直辖市及国外，产

26、品深得用户依赖。6公司常年销售成都钢铁集团、冶钢集团、包头钢厂、宝钢集团、鞍钢集团、天津大无缝、西宁特钢厂、无锡钢厂、衡阳钢厂等各大钢厂生产的各种无缝钢管及合金管。主营材质： 20#、35#、45# 、20G 、20A 、40Mn2 、45Mn2 、27SiMn、40MnB 、 20MnVB、 20Cr 、 30Cr 、35Cr、40Cr、 45Cr、 50Cr、 38CrSi、12CrMo、20CrMo、 35CrMo、42CrMo、12CrMoV、12Cr1MoV、38CrMoAL、50CrV、20CrMnSi 、30CrMnSi 、35CrMnSi、 20CrMnTi、30CrMnTi、

27、12CrNi2、 12CrNi3、12Cr2Ni4、40CrNiMoA、45CrNiMoVA、20G 、20MnG 、25MnG 、12CrMoG、15CrMoG、12Cr2MoG、12Cr1MoVG、12Cr2MoWVTiB、 12Cr3MoVSiTiB等实行标准： GB/T8162-99构造管、 GB/T8163-99流体管、 GB/T3087-99中低压锅炉管、GB/T5310-95高压锅炉管、 GB/T6479-2000化肥专用管、 27SiMn液压支架管、高压合金管、GB/T9948-85石油裂化管GB9948-88、地质钻探用管YB235-70、汽车半轴套管YB/T5035-96。

28、现我公司有大量合金管、高压管、无缝方管、异型无缝钢管现货，将以优惠的价钱，批零兼营的方式，为您提供快捷优质的服务，欢迎新老客户前来洽谈、电议。管螺纹的基本尺寸表(2010-10-25 15:57:35)转载 标签：杂谈表（1）螺纹基本尺寸G1/2、ZG1/2( 单位 :mm)尺寸代每螺距 p牙型圆弧半基面上的基本直径基准有效号25.4mm高度 h 径 r 大径（基 中径小径距离螺纹类的牙准直径） d2=D2d1=D1长度数 nd=D1/16280.9070.581 0.1257.7237.1426.5614.06.51/8280.9070.581 0.1259.7289.1478.5664.0

29、6.51/4191.3370.586 0.18413.15712.30111.4456.09.73/8191.3370.586 0.18416.66215.80614.9506.410.11/2141.8141.162 0.24920.95519.79318.6318.213.23/4141.8141.162 0.24926.44125.27924.1179.514.51112.3091.479 0.31733.24931.77030.29110.416.81.1/4112.3091.479 0.31741.91040.43138.95212.719.11.1/2112.3091.479 0.

30、31747.80346.32444.84512.719.12112.3091.479 0.31759.61458.13556.65615.923.42.1/2112.3091.479 0.31775.18473.70572.22617.526.73112.3091.479 0.31787.88486.40584.92620.629.83.1/2112.3091.479 0.317100.33098.85197.37222.231.44112.3091.479 0.317113.030111.551110.07225.435.85112.3091.479 0.317138.430136.9511

31、35.47228.640.16112.3091.479 0.317163.830162.351160.87228.640.17锥管螺纹的基本尺寸表（3-28 ） 1/2PT、1/2NPT表（ 2）螺纹基本尺寸(单位 :mm)尺寸代 每号25.4mm类的牙基面上的基本直径基准距离大径（基中径小径准直径）d2=D2d1=D1数 nd=D1/16277.8957.1426.3894.0641/82710.2429.4898.7364.1021/41813.61612.48711.3585.7863/81817.05515.92614.7976.0961/21421.22319.77218.3218.

32、1283/41426.56825.11723.6668.611111.533.22831.46129.69410.1601.1/411.541.98540.21838.45110.6681.1/211.548.05446.28744.52010.668211.560.09258.32556.55811.0742.1/2872.69970.15967.61917.3233888.60886.06883.52819.4563.1/28101.31698.77696.23620.85348113.973111.433108.89321.438螺纹标准的一种，按外形分圆柱、圆锥两种；按牙型角分55&#

33、176;、 60°两种。螺纹中的1/4 、 1/2 、1/8标记是指螺纹尺寸的直径，单位是英寸。一吋等于8 分， 1/4吋就是 2 分，如此类推。国外常用英制螺纹的代号、名称和标准号：标准惠氏粗牙系列，一般用途圆柱螺纹标准惠氏细牙系列，一般用途圆柱螺纹Whit.S附加的惠氏可选择系列，一般用途圆柱螺纹Whit惠氏牙型的非标准螺纹以上为英国标准BS84牙型角为 55°的英制螺纹UN 恒定螺距系列的统一螺纹UNC 粗牙系列的统一螺纹UNF 细牙系列的统一螺纹UNEF 超细牙系列的统一螺纹UNS特殊系列的统一螺纹UNR 圆弧牙底恒定螺距系列的统一螺纹UNRC 圆弧牙底粗牙系列统一

34、螺纹8UNRF 圆弧牙底细牙系列统一螺纹UNREF 圆弧牙底超细牙系列统一螺纹UNRS 圆弧牙底特殊系列统一螺纹以上为美国标准ANSIB1.1 标准牙型 ( 牙底是平的或随意倒圆的) 的内、外螺纹圆弧牙底的 UNR、UNRC、UNRF、UNREF、 NRS只用于外螺纹而没有内螺纹NPT一般用途的锥管螺纹NPSC 管接头用直管螺纹NPTR 导杆连接用锥管螺纹NPSM 机械连接用直管螺纹NPSL 锁紧螺母用直管螺纹NPSH 软管连接用直管螺纹以上为美国标准 ANSIB1.20.1牙型角为 60°的英制管螺纹NPTF干密封标准型锥管螺纹美国标准 ANSIB1.20.3型PTF-SAE SH

35、ORT 干密封短型锥管螺纹美国标准 ANSIB1.20.3型NPSF 干密封标准型燃油用直管内螺纹美国标准 ANSIB1.20.3型NPS1干密封标准型一般用直管内螺纹美国标准 ANSIB1.20.3型ACME一般用途的梯形螺纹美国标准 ANSIB1.5 牙型角为 29°的英制传动螺纹尺寸和公差使用与标准系列相同的公式计算的标准系列之外的所有直径与螺距组合。我国的 60°圆锥管螺纹 GB/T12716-1991 与之等效。ACME螺纹包括一般用途的和定心的两种配合的梯形螺纹，其中一般用途者与我国标准 GB/T5796-1986规定的梯形螺纹的性能相类同。螺距用每英寸的牙数来

36、表示，如：每英寸11 牙，则螺距 25.4/11 2.309mm螺纹如何区分英制和公制？默认分类2009-08-24 22:03:14阅读 1281评论 0字号：大中小粗略判断的话好像英制的比公职的牙距大（同规格的）NPT， PT， G都是管螺纹NPT 是National(American)PipeThread的縮寫，屬於美国標准的60度锥管螺纹，用於北美地區国家標准可查阅GB/T12716-1991PT是PipeThread的縮寫，是55度密封圓锥管螺纹，屬惠氏螺紋家族，多用於欧洲及英联邦国家常用於水及煤气管行业，锥度規定为1:16 国家標准可查阅GB/T7306-2000G是55度非螺纹密

37、封管螺纹，屬惠氏螺紋家族标记为G代表圓柱螺紋国家標准可查阅GB/T7307-2001另外螺纹中的1/4 、 1/2 、 1/8标记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，一吋等於分，1/4吋就是分，如此類推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。即螺纹由一圆柱面加工而成。ZG俗称管锥，即螺纹由一圆锥面加工而成，一般的水管接头都是这样的，老国标标注为Rc公制螺纹用螺距来表示，美英制螺纹用每英寸内的螺纹牙数来表示，这是它们最大的区别，9公制螺纹是 60 度等边牙型，英制螺纹是等腰55 度牙型，美制螺纹60 度。公制螺纹用公制单位，美

38、英制螺纹用英制单位。管螺纹主要用来进行管道的连接，其内外螺纹的配合紧密，有直管与锥管两种。公称直径是指所连接的管道直径，显然螺纹大径比公称直径大。1/4 ， 1/2 ，1/8 是英制螺纹的公称直径，单位是英寸。英制螺纹标准规格表寸大径螺距每英寸牙数中径小径牙型高 底孔直径牙型代号 mmmmmm外螺纹WwtpiH1mmd=Dpd2=D2d31/16"BSW1.5870.423601.3151.0500.2701.153/32"BSW2.3810.529482.0411.7030.3381.901/8"BSW3.1750.635402.7682.3620.4062.5

39、05/32"BSW3.9690.793323.4592.9520.5073.203/16"BSW4.7621.058244.0843.4070.6773.707/32"BSW5.5561.058244.8784.2010.6774.501/4"BSW6.3501.270205.5374.7240.8135.105/16"BSW7.9381.411187.0346.1310.9046.503/8"BSW9.5251.588168.5097.4921.0177.907/16"BSW11.1131.814149.9518.7891.1629.201/2"BSW12.7002.1171211