螺紋基本尺寸對照表

1、英制管螺紋基本尺寸及公差（牙形角55º） BSPP螺紋代號基本直徑內(nèi)螺紋外螺紋大徑中徑小徑中徑公差小徑公差A(yù)級B級中徑公差大徑公差中徑公差大徑公差G1/8×289.7289.1478.566+0.170+0.28200-0.1070-0.2140-0.2140-0.214G1/4×1913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250G3/8×1916.66215.80614.950+0.1250+0.44500-0.1250-0.2500-0.2500-0.250G1/2×1420.

2、95519.79318.631+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G5/8×1422.91121.74920.587+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G3/4×1426.44125.27924.117+0.1420+0.54100-0.1420-0.2840-0.2840-0.284G1×1133.24931.77030.291+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G1.1/4×1141.91040.43138.

3、952+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G1.1/2×1147.80346.32444.854+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G2×1159.61458.13556.656+0.1800+0.64000-0.1800-0.3600-0.3600-0.360G2.1/2”X1175.18473.70572.226+0.2170+0.64000-0.2170-0.4340-0.4340-0.434G3”X1187.88486.40584.926+0.2170+0.64000-0

4、.2170-0.4340-0.4340-0.434G3.1/2”X11100.33098.85197.372+0.2170+0.64000-0.2170-0.4340-0.4340-0.434英制錐管螺紋基本尺寸及公差（牙形角55º） BSPT螺紋代號基面上的直徑基準(zhǔn)長度有效螺紋長度圓錐內(nèi)螺紋基面軸向位移偏差（±mm）大徑中徑小徑基本最大最小基本最大最小R1/8×289.7289.1478.5664.04.93.16.57.45.61.1R1/4×1913.15712.30111.4456.07.34.79.711.08.41.7R3/8×19

5、16.66215.80614.9506.47.75.110.111.48.81.7R1/2×1420.95519.79318.6318.210.06.413.215.011.42.3R3/4×1426.44125.27924.1179.511.37.714.516.312.72.3R1×1133.24931.77030.29110.412.78.116.819.114.52.9R1.1/4×1141.91040.43138.95212.715.010.419.121.416.82.9R1.1/2×1147.80346.32444.84512.7

6、15.010.419.121.416.82.9R2×1159.61458.13556.65615.918.213.623.425.721.12.9R2.1/2”X1175.18473.70572.22617.521.014.026.730.223.23.5R3”X1187.88486.40584.92620.624.117.129.833.326.33.5R3.1/2”X11100.33098.85197.37222.225.718.731.434.927.93.5美制管螺紋基本尺寸及公差（牙形角60º） UN(F)螺紋代號外螺紋內(nèi)螺紋公差等級公差等級2A2B大徑中徑小徑小

7、徑中徑大徑最大最小最大最小最小最大最小最大JIC螺紋7/16×20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.1131/2×20UNF12.66712.46111.84111.73211.15611.32811.60811.87512.01712.79/16×18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.2883/4×16UNF19.01218.77317.98117.85417.1217.32317.678

8、18.01918.18419.057/8×14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.2251-1/16×12UN26.94426.65525.5725.42524.42524.68925.14625.61325.80126.9881-5/16×12UN33.29433.00531.9231.77330.77531.03931.49631.96332.15433.3381-5/8×12UN41.22940.9439.88539.70538.7138.98939.44639.9

9、0140.09441.2751-7/8×12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.6252-1/2×12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS螺紋9/16×18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.28811/16×16UN17.42717.18816.39616.27415.53515.74816.10416.4

10、3116.58917.46313/16×16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.6381×14UNF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.41-3/16×12UN30.11929.8328.74528.59827.627.86428.32128.78828.97930.1631-7/16×12UN36.46736.17735.09334.94333.94734.21434.67135.13835.3

11、3136.5131-11/16×12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.8632×12UN50.75450.46549.3849.22548.23548.51448.97149.42649.62750.8SAE螺紋5/8×18UNF15.83915.61814.92314.80314.16114.35114.68114.95815.1115.8751-1/16×14UN26.94726.68325.74325.60824.7424.96825.37525.78325.9612

12、6.987其它美制螺紋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粗牙螺紋系列，UNF細牙螺紋系列， UNEF超細牙螺紋系列， UN不變螺距系列布錐管螺紋基本尺寸及公差(牙形角60º)

13、NPT螺紋代號基面上的直徑螺紋長度大徑中徑小徑有效長度管端至基面長Z1/8×2710.2729.5198.76674.572Z1/4×1813.57212.44311.3149.55.080Z3/8×1817.05515.92614.79710.56.096Z1/2×1421.22319.77218.32113.58.028Z3/4×1426.56825.11723.666148.611Z1×11.533.22831.46129.69417.510.160Z1.1/4×11.541.98540.21838.4511810.6

14、88Z1.1/2×11.548.05446.28744.52018.510.688Z2×11.560.09258.32556.5581911.074公制螺紋基本尺寸及公差(牙形角60º) M螺紋代號基本直徑內(nèi) 螺 紋外螺紋大 徑中 徑小 徑公 差 等 級公差等級6H7H6g中徑公差小徑公差中徑公差小徑公差中徑公差大徑公差M10X1109.3508.917+0.1500+0.2360+0.1900+0.3000-0.026-0.138-0.026-0.206M12X11211.35010.917+0.1600+0.2360+0.2000+0.3000-0.026-0

15、.144-0.026-0.206M14X11413.35012.917+0.1600+0.2360+0.2000+0.3000-0.026-0.144-0.026-0.206M12X1.251211.18810.647+0.1800+0.2650+0.2240+0.3350-0.028-0.160-0.028-0.240M14X1.251413.18812.647+0.1800+0.2650+0.2240+0.3350-0.028-0.160-0.028-0.240M12X1.51211.02610.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.0

16、32-0.268M14X1.51413.02612.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M16X1.51615.02614.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M18X1.51817.02616.373+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M20X1.52019.02618.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268

17、M22X1.52221.02620.376+0.1900+0.3000+0.2360+0.3750-0.032-0.172-0.032-0.268M24X1.52423.02622.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M26X1.52625.02624.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M27X1.52726.02625.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M30X1.53

18、029.02628.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M33X1.53332.02631.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M36X1.53635.02634.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M39X1.53938.02637.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M42X1.54241.0264

19、0.376+0.2000+0.3000+0.2500+0.3750-0.032-0.182-0.032-0.268M27X22725.70124.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M30X23028.70127.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M33X23331.70130.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M36X23634.70133.835+0.2240+0.3

20、750+0.2800+0.4750-0.038-0.208-0.038-0.318M39X23937.70136.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M42X24240.70139.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M45X24543.70142.835+0.2240+0.3750+0.2800+0.4750-0.038-0.208-0.038-0.318M52X25250.70149.835+0.2360+0.3750+0.3000+0.475

21、0-0.038-0.218-0.038-0.318M60X26058.70157.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.318M64X26462.70161.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.318M72X27270.70169.835+0.2360+0.3750+0.3000+0.4750-0.038-0.218-0.038-0.31855°圓錐管螺紋基本尺寸對照表最新下載-匯興達55°圓錐管螺紋基本尺寸對照表最新下載-匯興達55

22、6;圓錐管螺紋(BSPT) 螺紋代號基本尺寸英寸大徑mmd=D螺距mmp每英寸牙數(shù)tpi中徑mmd2=D2小徑外螺紋d3牙型高度H1圓弧尺寸r底孔尺寸mmR 1/161/16"7.7230.907287.1426.5610.5810.1256.4R 1/81/8"9.7280.907289.1478.5660.5810.1258.4R 1/41/4"13.1571.3371912.30111.4450.8560.18411.2R 3/83/8"16.6621.3371915.80614.9500.8560.18414.75R 1/21/2&qu

23、ot;20.9551.8141419.79318.6311.1620.24918.25R 3/43/4"26.4411.8141425.27924.1171.1620.24923.75R 11"33.2492.3091131.7730.2911.4790.31730R 1 1/41 1/4"41.9102.3091140.43138.9521.4790.31738.5R 1 1/21 1/2"47.8032.3091146.32444.8451.4790.31744.5R 22"59.6142.3091158.13556.6561.4790.3

24、1756R 2 1/22 1/2"75.1842.3091173.70572.2261.4790.31771R 33"87.8842.3091186.40584.9261.4790.31785.5R 44"113.0302.30911111.551110.0721.4790.317110.5R 55"138.4302.30911136.951135.4721.4790.317136R 66"163.8302.30911162.351160.8721.4790.317161.5聊城市鑫茂祥管業(yè)有限公司專業(yè)經(jīng)營鋼管規(guī)格：5mm*1mm1020mm*

25、200mm合金鋼管、外徑22mm-127mm冷軋無縫鋼管、外徑127mm-600mm，壁厚16mm-100mm，外徑精度±0.5%,壁厚精度±5%熱軋中厚壁無縫鋼管、16Mn外徑4001600mm、壁厚2060mm的大口徑厚壁卷管，可定尺到16米及各種規(guī)格的無縫方管、異型無縫鋼管等.常備鋼管種類有:構(gòu)造用無縫鋼管、流體用無縫鋼管、液壓無縫鋼管、電力用無縫鋼管、石油輸送用無縫鋼管、化肥設(shè)備用無縫鋼管、煤礦用無縫鋼管、不銹鋼無縫鋼管、化工用無縫鋼管、紡織機械用無縫鋼管、汽車；水利用無縫鋼管，精密無縫鋼管、光亮無縫鋼管、軍工醫(yī)療用無縫鋼管、管道用無縫鋼管、支柱用無縫鋼管、合金無縫

26、管、高壓無縫管、大口徑直縫焊管等。適用于工程、煤礦 、紡織、電力、鍋爐、機械、軍工等各個領(lǐng)域。公司以良好的信用、優(yōu)質(zhì)的產(chǎn)品、雄厚的實力、低廉的價錢享譽全國30多個省、市、自治區(qū)、直轄市及國外，產(chǎn)品深得用戶依賴。    公司常年銷售成都鋼鐵集團、冶鋼集團、包頭鋼廠、寶鋼集團、 鞍鋼集團、天津大無縫、西寧特鋼廠、無錫鋼廠、衡陽鋼廠等各大鋼廠生產(chǎn)的各種無縫鋼管及合金管。主營材質(zhì)：20#、35#、45#、20G、20A、40Mn2、45Mn2、27SiMn、40MnB、20MnVB、20Cr、30Cr、35Cr、40Cr、45Cr、50Cr、 38CrSi、12CrMo

27、、20CrMo、35CrMo、42CrMo、12CrMoV、12Cr1MoV、38CrMoAL、50CrV、20CrMnSi、30CrMnSi、35CrMnSi、 20CrMnTi、30CrMnTi、12CrNi2、 12CrNi3、12Cr2Ni4、40CrNiMoA、45CrNiMoVA、20G、20MnG、25MnG、12CrMoG、15CrMoG、12Cr2MoG、12Cr1MoVG、12Cr2MoWVTiB、 12Cr3MoVSiTiB等實行標(biāo)準(zhǔn)：GB/T8162-99構(gòu)造管、GB/T8163-99流體管、GB/T3087-99中低壓鍋爐管、GB/T5310-95高壓鍋爐管、GB/T

28、6479-2000化肥專用管、27SiMn液壓支架管、高壓合金管、GB/T9948-85石油裂化管GB9948-88、地質(zhì)鉆探用管YB235-70、汽車半軸套管YB/T5035-96。    現(xiàn)我公司有大量合金管、高壓管、無縫方管、異型無縫鋼管現(xiàn)貨，將以優(yōu)惠的價錢，批零兼營的方式，為您提供快捷優(yōu)質(zhì)的服務(wù)，歡迎新老客戶前來洽談、電議。管螺紋的基本尺寸表(2010-10-25 15:57:35) 轉(zhuǎn)載標(biāo)簽： 雜談表（1）螺紋基本尺寸     G1/2  、ZG1/2   

29、0;                 (單位:mm) 尺寸代號每25.4mm類的牙數(shù)n螺距p牙型高度h圓弧半徑r基面上的基本直徑基準(zhǔn)距離有效螺紋長度大徑（基準(zhǔn)直徑）d=D中徑d2=D2小徑d1=D11/16280.9070.5810.1257.7237.1426.5614.06.51/8280.9070.5810.1259.7289.1478.5664.06.51/4191.3370.5860.18413.15712.3011

30、1.4456.09.73/8191.3370.5860.18416.66215.80614.9506.410.11/2141.8141.1620.24920.95519.79318.6318.213.23/4141.8141.1620.24926.44125.27924.1179.514.51112.3091.4790.31733.24931.77030.29110.416.81.1/4112.3091.4790.31741.91040.43138.95212.719.11.1/2112.3091.4790.31747.80346.32444.84512.719.12112.3091.4790

31、.31759.61458.13556.65615.923.42.1/2112.3091.4790.31775.18473.70572.22617.526.73112.3091.4790.31787.88486.40584.92620.629.83.1/2112.3091.4790.317100.33098.85197.37222.231.44112.3091.4790.317113.030111.551110.07225.435.85112.3091.4790.317138.430136.951135.47228.640.16112.3091.4790.317163.830162.351160

32、.87228.640.1 錐管螺紋的基本尺寸表（3-28）1/2PT  、1/2NPT 表（2）螺紋基本尺寸       (單位:mm) 尺寸代號每25.4mm類的牙數(shù)n基面上的基本直徑基準(zhǔn)距離大徑（基準(zhǔn)直徑）d=D中徑d2=D2小徑d1=D11/16277.8957.1426.3894.0641/82710.2429.4898.7364.1021/41813.61612.48711.3585.7863/81817.05515.92614.7976.0961/21421.22319.77218.

33、3218.1283/41426.56825.11723.6668.611111.533.22831.46129.69410.1601.1/411.541.98540.21838.45110.6681.1/211.548.05446.28744.52010.668211.560.09258.32556.55811.0742.1/2872.69970.15967.61917.3233888.60886.06883.52819.4563.1/28101.31698.77696.23620.85348113.973111.433108.89321.438螺紋標(biāo)準(zhǔn)的一種，按外形分圓柱、圓錐兩種；按牙型角

34、分55°、60°兩種。螺紋中的1/4、1/2、1/8 標(biāo)記是指螺紋尺寸的直徑，單位是英寸。一吋等于8分，1/4 吋就是2分，如此類推。國外常用英制螺紋的代號、名稱和標(biāo)準(zhǔn)號 ：B.S.W. 標(biāo)準(zhǔn)惠氏粗牙系列，一般用途圓柱螺紋 B.S.F. 標(biāo)準(zhǔn)惠氏細牙系列，一般用途圓柱螺紋 Whit.S 附加的惠氏可選擇系列，一般用途圓柱螺紋 Whit 惠氏牙型的非標(biāo)準(zhǔn)螺紋 以上為英國標(biāo)準(zhǔn)BS84 牙型角為55°的英制螺紋 UN 恒定螺距系列的

35、統(tǒng)一螺紋 UNC 粗牙系列的統(tǒng)一螺紋 UNF 細牙系列的統(tǒng)一螺紋 UNEF 超細牙系列的統(tǒng)一螺紋 UNS 特殊系列的統(tǒng)一螺紋 UNR 圓弧牙底恒定螺距系列的統(tǒng)一螺紋 UNRC 圓弧牙底粗牙系列統(tǒng)一螺紋 UNRF 圓弧牙底細牙系列統(tǒng)一螺紋 UNREF 圓弧牙底超細牙系列統(tǒng)一螺紋 UNRS 圓弧牙底特殊系列統(tǒng)一螺紋 以上為美國標(biāo)準(zhǔn)ANSIB1.1標(biāo)準(zhǔn)牙型(牙底是平的或隨意倒圓的)的內(nèi)、外螺紋 圓弧牙底

36、的UNR、UNRC、UNRF、UNREF、NRS只用于外螺紋而沒有內(nèi)螺紋 NPT 一般用途的錐管螺紋 NPSC 管接頭用直管螺紋 NPTR 導(dǎo)桿連接用錐管螺紋 NPSM 機械連接用直管螺紋 NPSL 鎖緊螺母用直管螺紋 NPSH 軟管連接用直管螺紋  牙型角為60°的英制管螺紋NPTF 干密封標(biāo)準(zhǔn)型錐管螺紋  型 PTF-SAE SHORT 干密封短型錐管螺紋  型&

37、#160;NPSF 干密封標(biāo)準(zhǔn)型燃油用直管內(nèi)螺紋  型 NPS1 干密封標(biāo)準(zhǔn)型一般用直管內(nèi)螺紋  型 ACME 一般用途的梯形螺紋 美國標(biāo)準(zhǔn)ANSIB1.5 牙型角為29°的英制傳動螺紋 尺寸和公差使用與標(biāo)準(zhǔn)系列相同的公式計算的標(biāo)準(zhǔn)系列之外的所有直徑與螺距組合。 我國的60°圓錐管螺紋GB/T12716-1991與之等效。 ACME螺紋包括一般用途的和定心的兩種配合的梯形螺紋，其中一般用途者與我國標(biāo)準(zhǔn)GB/T5796-1986規(guī)定的梯形

38、螺紋的性能相類同。螺距用每英寸的牙數(shù)來表示，如：每英寸11牙，則螺距25.4/112.309mm  螺紋如何區(qū)分英制和公制？默認分類 2009-08-24 22:03:14 閱讀1281 評論0 字號：大中小 粗略判斷的話好像英制的比公職的牙距大（同規(guī)格的） NPT，PT，G都是管螺紋NPT 是 National (American) Pipe Thread 的縮寫，屬於美國標(biāo)準(zhǔn)的 60 度錐管螺紋，用於北美地區(qū)國家標(biāo)準(zhǔn)可查閱

39、 GB/T12716-1991PT 是 Pipe Thread 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)邦國家常用於水及煤氣管行業(yè)，錐度規(guī)定為 1:16 國家標(biāo)準(zhǔn)可查閱 GB/T7306-2000G 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)人通常用分來稱呼螺

40、紋尺寸，一吋等於分，1/4 吋就是分，如此類推G 好像就是管螺紋的統(tǒng)稱(Guan)，55，60度的劃分屬于功能性的，俗稱管圓。即螺紋由一圓柱面加工而成。ZG俗稱管錐，即螺紋由一圓錐面加工而成，一般的水管接頭都是這樣的，老國標(biāo)標(biāo)注為Rc公制螺紋用螺距來表示，美英制螺紋用每英寸內(nèi)的螺紋牙數(shù)來表示，這是它們最大的區(qū)別，公制螺紋是60度等邊牙型，英制螺紋是等腰55度牙型，美制螺紋60度。公制螺紋用公制單位， 美英制螺紋用英制單位。管螺紋主要用來進行管道的連接，其內(nèi)外螺紋的配合緊密，有直管與錐管兩種。公稱直徑是指所連接的管道直徑，顯然螺紋大徑比公稱直徑大。1/4，1/2，1

41、/8是英制螺紋的公稱直徑，單位是英寸。英制螺紋標(biāo)準(zhǔn)規(guī)格表寸Ww牙型代號大徑mmd=D螺距mmp每英寸牙數(shù)tpi中徑mmd2=D2小徑外螺紋d3牙型高H1底孔直徑mm 1/16"BSW1.5870.423601.3151.0500.2701.15 3/32"BSW2.3810.529482.0411.7030.3381.90 1/8"BSW3.1750.635402.7682.3620.4062.50 5/32"BSW3.9690.793323.4592.9520.5073.20 3/16"BSW

42、4.7621.058244.0843.4070.6773.70 7/32"BSW5.5561.058244.8784.2010.6774.50 1/4"BSW6.3501.270205.5374.7240.8135.10 5/16"BSW7.9381.411187.0346.1310.9046.50 3/8"BSW9.5251.588168.5097.4921.0177.90 7/16"BSW11.1131.814149.9518.7891.1629.20 1/2"BSW12

43、.7002.1171211.3459.9901.35510.40 5/8"BSW15.8762.3091114.39712.9181.47913.40 3/4"BSW19.0512.5401017.42415.7981.62716.25 7/8"BSW22.2262.822920.41918.6111.80719.25 1"BSW25.4003.175823.36821.3352.03322.00 1 1/8"BSW28.5763.629726.25323.9292.32424.50&

44、#160;1 1/4"BSW31.7513.629729.42827.1042.32427.25 1 3/8"BSW34.9264.233632.21529.5052.71130.25 1 1/2"BSW38.1004.233635.39132.6802.71133.50 1 5/8"BSW41.2775.080538.02434.7713.25335.50 1 3/4"BSW44.4525.080541.19937.9463.25338.50 

45、1 7/8"BSW47.6275.6454 1/244.01240.3983.61441.25 2"BSW50.8025.6454 1/247.18743.5733.61444.50 2 1/4"BSW57.1526.350453.08649.0204.06650.00 2 1/2"BSW63.5026.350459.43655.3704.06656.00 2 3/4"BSW69.8537.2573 1/265.20560.5584.6

46、4761.50 3"BSW76.2037.2573 1/271.55666.9094.64768.00 3 1/4"BSW82.5537.8163 1/477.54872.5445.00573.75 3 1/2"BSW88.9037.8163 1/483.89978.8945.00580.00 3 3/4"BSW95.2548.467389.83284.4105.42285.50 4"BSW101.6048.467396.18290.7

47、605.42292.00 4 1/4"BSW107.9548.8352 7/8102.29796.6395.65798.00 4 1/2"BSW114.3048.8352 7/8108.647102.9905.657104.20 4 3/4"BSW120.6659.2372 3/4114.740108.6255.915110.00 5"BSW127.0059.2372 3/4121.090115.1765.915116.50 5

48、0;1/4"BSW133.3559.6772 5/8127.159120.9636.196122.50 5 1/2"BSW139.7059.6772 5/8133.509127.3136.196128.50 5 3/4"BSW146.05510.1602 1/2139.549133.0436.506134.50 6"BSW152.40610.1602 1/2145.900139.3946.506141.00     

49、       英制普通螺紋 - 細牙 - BSF英制普通螺紋 (惠氏螺紋) - 細牙 (BSW)名義尺寸BSF牙型代號大徑mmd=D螺距mmp每英寸牙數(shù)tpi中徑mmd2=D2小徑外螺紋d3牙型高H1底孔直徑mm 3/16BSF4.7630.794324.2553.7470.5084.007/32BSF5.5560.907284.9754.3940.5814.601/4BSF6.3500.977265.7255.1000.6255.309/32BSF7.1420.977266.5185.8930.6256.105/16B