螺紋基本尺寸對(duì)照表要點(diǎn)

1、英制管螺紋基本尺寸及公差（牙形角55）BSPP螺紋代號(hào)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(jí)B級(jí)中徑公差大徑公差中徑公差大徑公差+0.170+0.2820000Gl/8X289.7289.1478.5660-0.107-0.214-0.214-0.214Gl/4Xi913.15712.30111.445+0.125+0.445-0.125-0.250-0.2500-0.250+0.125+0.4450000G3/8X1916.66215.80614.95000-0.125-0.250-0.250-0.250+0.142+0.5410000Gl/2X1420.95519.79318

2、.63100-0.142-0.284-0.284-0.284+0.142+0.5410000G5/8X1422.91121.74920.58700-0.142-0.284-0.284-0.284+0.142+0.5410000G3/4X1426.44125.27924.11700-0.142-0.284-0.284-0.284+0.180+0.6400000GlX1133.24931.77030.29100-0.180-0.360-0.360-0.360+0.180+0.6400000G1.1/4X1141.91040.43138.95200-0.180-0.360-0.360-0.360+0

3、.180+0.6400000G1.1/2X1147.80346.32444.85400-0.180-0.360-0.360-0.360+0.180+0.6400000G2“X1159.61458.13556.65600-0.180-0.360-0.360-0.360+0.217+0.6400000G2.1/2”X1175.18473.70572.22600-0.217-0.434-0.434-0.434+0.217+0.6400000G3”X1187.88486.40584.92600-0.217-0.434-0.434-0.434+0.217+0.6400000G3.1/2”X11100.3

4、3098.85197.37200-0.217-0.434-0.434-0.434英制錐管螺紋基本尺寸及公差（牙形角55）BSPT螺紋代號(hào)基面上的直徑基準(zhǔn)長(zhǎng)度有效螺紋長(zhǎng)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“X289.7289.1478.5664.0R1/4“X1913.15712.30111.4456.011.08.41.7R3/8X1916.66215.80614.9501.7R1/2“X1420.95519.79318.6318.210.06.413.21

5、5.011.42.3R3/4X1426.44125.27924.1179.511.37.714.516.312.72.3R1X1133.24931.77030.29110.4R1.1/4X1141.91040.43138.95212.715.010.419.121.416.82.9R1.1/2X1147.80346.32444.84512.715.010.419.121.416.82.9R2X1159.61458.13556.65615.918.213.623.425.721.12.9R2.1/2”X1175.18473.70572.22617.52

6、1.014.026.7R3”X1187.88486.40584.92620.633.326.33.5R3.1/2”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60）UN（F）螺紋代號(hào)外螺紋內(nèi)螺紋公差等級(jí)公差等級(jí)2A2B大徑中徑小徑小徑中徑大徑最大最小最大最小最小最大最小最大JIC螺紋7/16X20UNF11.07910.87410.25410.1479.5689.72810.03310.28710.42411.1131/2X20UNF12.66712.46111.

7、84111.73211.15611.32811.60811.87512.01712.79/16X18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.2883/4X16UNF19.01218.77317.98117.85417.1217.32317.67818.01918.18419.057/8X14UNF22.18421.92321.00620.86920.02520.26920.67621.04621.22422.2251-1/16X12UN26.94426.65525.5725.42524.42524.68925.146

8、25.61325.80126.9881-5/16X12UN33.29433.00531.9231.77330.77531.03931.49631.96332.15433.3381-5/8“X12UN41.22940.9439.88539.70538.7138.98939.44639.90140.09441.2751-7/8X12UN47.57947.2946.20546.05345.0645.33945.79646.25146.44947.6252-1/2“X12UN63.45263.16262.07861.9260.93261.21461.67162.12662.33263.5ORFS螺紋9

9、/16“X18UNF14.25214.03113.33513.22112.57312.75113.08113.37113.5214.28811/16X16UN17.42717.18816.39616.27415.53515.74816.10416.43116.58917.46313/16X16UN20.59920.36119.56819.44418.70718.92319.27919.60619.76620.6381X14UNF25.35725.09524.17824.03623.19523.44423.82524.22124.40725.41-3/16“X12UN30.11929.8328.

10、74528.59827.627.86428.32128.78828.97930.1631-7/16X12UN36.46736.17735.09334.94333.94734.21434.67135.13835.33136.5131-11/16“X12UN42.81742.52741.44341.2940.29740.56441.02141.48841.68642.8632“X12UN50.75450.46549.3849.22548.23548.51448.97149.42649.62750.8SAE螺紋5/8“X18UNF15.83915.61814.92314.80314.16114.35

11、114.68114.95815.1115.8751-1/16“X14UN26.94726.68325.74325.60824.7424.96825.37525.78325.96126.987其它美制螺紋9/16“X16UN14.25214.01313.22113.10112.3612.57312.92913.25613.41114.2887/8“X12UN22.18221.89220.80820.66819.66219.93920.39620.85121.03422.2252-1/4X12UN57.10456.81555.7355.57554.58554.86455.32155.77655.9

12、7657.15注：UNC粗牙螺紋系列，UNF細(xì)牙螺紋系列，UNEF超細(xì)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60）NPT螺紋代號(hào)基面上的直徑螺紋長(zhǎng)度大徑中徑小徑有效長(zhǎng)度管端至基面長(zhǎng)Z1/8“X2710.2729.5198.76674.572Z1/4X1813.57212.44311.3149.55.080Z3/8“X1817.05515.92614.79710.56.096Z1/2X1421.22319.77218.32113.58.028Z3/4“X1426.56825.11723.666148.611Z1X11.533.22831.46129.69417.510.16

13、0Z1.1/4“X11.541.98540.21838.4511810.688Z1.1/2Xii.548.05446.28744.52018.510.688Z2Xii.560.09258.32556.5581911.074公制螺紋基本尺寸及公差（牙形角60）M螺紋代號(hào)基本直徑內(nèi)螺紋外螺紋大徑中徑小徑公差等級(jí)公差等級(jí)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+0.150+0.236+0.190+0.300-0.026-0.0260000-0.138-0.206M12X11211.35010.917+0.160+0.236+0.200+0.300

14、-0.026-0.0260000-0.144-0.206M14X11413.35012.917+0.160+0.236+0.200+0.300-0.026-0.0260000-0144-0206M12X1.251211.18810.647+0.180+0.265+0.224+0.335-0.028-0.0280000-0160-0240M14X1.251413.18812.647+0.180+0.265+0.224+0.335-0.028-0.0280000-0.160-0.240M12X1.51211.02610.376+0.190+0.300+0.236+0.375-0.032-0.032

15、0000-0.172-0.268M14X1.51413.02612.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0172-0268M16X1.51615.02614.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0172-0268M18X1.51817.02616.373+0.190+0.300+0.236+0.375-0.032-0.0320000-0172-0268M20X1.52019.02618.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0.172-0.2

16、68M22X1.52221.02620.376+0.190+0.300+0.236+0.375-0.032-0.0320000-0172-0268M24X1.52423.02622.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0182-0268M26X1.52625.02624.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M27X1.52726.02625.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M30X1.5302

17、9.02628.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0182-0268M33X1.53332.02631.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0182-0268M36X1.53635.02634.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M39X1.53938.02637.376+0.200+0.300+0.250+0.375-0.032-0.0320000-0.182-0.268M42X1.54241.02640.376+

18、0.200+0.300+0.250+0.375-0.032-0.0320000-0182-0268M27X22725.70124.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0208-0318M30X23028.70127.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0208-0318M33X23331.70130.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318M36X23634.70133.835+0.224+0.375+0.280+0.47

19、5-0.038-0.0380000-0.208-0.318M39X23937.70136.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0208-0318M42X24240.70139.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0208-0318M45X24543.70142.835+0.224+0.375+0.280+0.475-0.038-0.0380000-0.208-0.318M52X25250.70149.835+0.236+0.375+0.300+0.475-0.038-0.0380000-0.

20、218-0.318M60X26058.70157.835+0.236+0.375+0.300+0.475-0.038-0.0380000-0218-0318M64X26462.70161.835+0.236+0.375+0.300+0.475-0.038-0.0380000-0218-0318M72X27270.70169.835+0.236+0.375+0.300+0.475-0.038-0.0380000-0.218-0.318180655圓錐管螺紋基本尺寸對(duì)照表最新下載-匯興達(dá)55圓錐管螺紋基本尺寸對(duì)照表最新下載-匯興達(dá)55圓錐管螺紋(BSPT)螺紋代號(hào)基本尺寸英寸大徑mmd=D螺距mm

21、p每英寸牙數(shù)tpi中徑mmd2=D2小徑外螺紋d3牙型高度H1R11/1/61677230907287.1426.5610.5818.1/897280907289.1470.581R11/4/413.1571.3371911.12.4301450.856R3/83/816.6621.337194.15.9500.856 2112211/22095518141419.7938.6311.162R3/43/42644118141425.27924.1171.162133.2492.3091131.7730.2911.479R11/411/441.9102.3091140.43138.9521.47

22、9R11/211/247.8032.3091146.32444.8451.479259.6142.3091158.13556.6561.4791/275.2.31840973.70572.1.479 6R3387.8842.3091184.86.9405261.479R441132.3.0309011111.5511.479R551382.3.4309011136.951135.4721.479R661632.3.8309011162.351160.8721.479聊城市鑫茂祥管業(yè)有限公司專業(yè)經(jīng)營(yíng)鋼管規(guī)格：5mm*1mm1020mm*200mm合金鋼管、外徑22mm-127mm冷軋無(wú)縫鋼管、外

23、徑127mm-600mm,壁厚16mm-100mm，外徑精度05%,壁厚精度5%熱軋中厚壁無(wú)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(wú)縫方管、異型無(wú)縫鋼管等常備鋼管種類有:構(gòu)造用無(wú)縫鋼管、流體用無(wú)縫鋼管、液壓無(wú)縫鋼管、電力用無(wú)縫鋼管、石油輸送用無(wú)縫鋼管、化肥設(shè)備用無(wú)縫鋼管、煤礦用無(wú)縫鋼管、不銹鋼無(wú)縫鋼管、化工用無(wú)縫鋼管、紡織機(jī)械用無(wú)縫鋼管、汽車；水利用無(wú)縫鋼管，精密無(wú)縫鋼管、光亮無(wú)縫鋼管、軍工醫(yī)療用無(wú)縫鋼管、管道用無(wú)縫鋼管、支柱用無(wú)縫鋼管、合金無(wú)縫管、高壓無(wú)縫管、大口徑直縫焊管等。適用于工程、煤礦、紡織、電力、鍋爐、機(jī)械、軍工等各個(gè)領(lǐng)

24、域。公司以良好的信用、優(yōu)質(zhì)的產(chǎn)品、雄厚的實(shí)力、低廉的價(jià)錢享譽(yù)全國(guó)30多個(gè)省、市、自治區(qū)、直轄市及國(guó)外，產(chǎn)品深得用戶依賴。公司常年銷售成都鋼鐵集團(tuán)、冶鋼集團(tuán)、包頭鋼廠、寶鋼集團(tuán)、鞍鋼集團(tuán)、天津大無(wú)縫、西寧特鋼廠、無(wú)錫鋼廠、衡陽(yáng)鋼廠等各大鋼廠生產(chǎn)的各種無(wú)縫鋼管及合金管。主營(yíng)材質(zhì)：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、30Cr

25、MnSi、35CrMnSi、20CrMnTi、30CrMnTi、12CrNi2、12CrNi3、12Cr2Ni4、40CrNiMoA、45CrNiMoVA、20G、20MnG、25MnG、12CrMoG、15CrMoG、12Cr2MoG、12Cr1MoVG、12Cr2MoWVTiB、12Cr3MoVSiTiB等實(shí)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/T6479-2000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

26、-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(wú)縫方管、異型無(wú)縫鋼管現(xiàn)貨，將以優(yōu)惠的價(jià)錢，批零兼營(yíng)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(lái)洽談、電議。管螺紋的基本尺寸表（2010-10-2515:57:35）轉(zhuǎn)載標(biāo)簽：雜談表（1）螺紋基本尺寸G1/2、ZG1/2（單位:mm）尺寸代號(hào)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(zhǎng)度大徑（基準(zhǔn)直徑）d=D中徑d2=D2小徑d1=D11/16280.9070.5810.1257.7237.1426.5614.06.51/8280.9070.5810.1259.7289.147

27、8.5664.06.51/4191.3370.5860.18413.15712.30111.4456.09.73/8191.3370.5860.18416.66215.80614.9506.410.11/2141.8141.1620.24920.95519.79318.6318.213.23/4141.8141.1620.24926.44125.27924.1179.514.51112.3091.4790.31733.24931.77030.29110.416.81.1/4112.3091.4790.31741.91040.43138.95212.719.11.1/2112.3091.4790

28、.31747.80346.32444.84512.719.12112.3091.4790.31759.61458.13556.65615.923.42.1/2112.3091.4790.31775.18473.70572.22617.526.73112.3091.4790.31787.88486.40584.92620.629.83.1/2112.3091.4790.317100.33098.85197.37222.231.44112.3091.4790.317113.030111.551110.07225.435.85112.3091.4790.317138.430136.951135.47

29、228.640.16112.3091.4790.317163.830162.351160.87228.640.1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(hào)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=D11/16277.8957.1426.3894.0641/82710.2429.4898.7364.1021/41813.61612.48711.3585.7863/81817.05515.92614.7976.0961/21421.22319.77218.3218.1283/41426.56

30、825.11723.6668.611111.533.22831.46129.69410.1601.1/411.541.98540.21838.45110.6681.1/211.548.05446.28744.52010.668211.560.09258.32556.55811.0742.1/2872.69970.15967.61917.3233888.60886.06883.52819.4563.1/28101.31698.77696.23620.85348113.973111.433108.89321.438螺紋標(biāo)準(zhǔn)的一種，按外形分圓柱、圓錐兩種；按牙型角分55、60兩種。螺紋中的1/4、1

31、/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(guó)外常用英制螺紋的代號(hào)、名稱和標(biāo)準(zhǔn)號(hào)：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(xì)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(guó)標(biāo)準(zhǔn)BS84牙型角為55。的英制螺紋UN恒定螺距系列的統(tǒng)一螺紋UNC粗牙系列的統(tǒng)一螺紋UNF細(xì)牙系列的統(tǒng)一螺紋UNEF超細(xì)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(xì)牙系列統(tǒng)一螺紋UNREF圓弧牙底超細(xì)牙系列統(tǒng)

32、一螺紋UNRS圓弧牙底特殊系列統(tǒng)一螺紋以上為美國(guó)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)、外螺紋圓弧牙底的UNR、UNRC、UNRF、UNREF、NRS只用于外螺紋而沒(méi)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(jī)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以上為美國(guó)標(biāo)準(zhǔn)ANSIB1.20.1牙型角為60。的英制管螺紋NPTF干密封標(biāo)準(zhǔn)型錐管螺紋美國(guó)標(biāo)準(zhǔn)ANSIB1.20.3I型PTF-SAESHORT干密封短型錐管螺紋美國(guó)標(biāo)準(zhǔn)ANSIB1.20.3II型NPSF干密封標(biāo)準(zhǔn)型燃油用直管內(nèi)螺紋美國(guó)標(biāo)準(zhǔn)ANSI

33、B1.20.3III型NPS1干密封標(biāo)準(zhǔn)型一般用直管內(nèi)螺紋美國(guó)標(biāo)準(zhǔn)ANSIB1.20.3W型ACME一般用途的梯形螺紋美國(guó)標(biāo)準(zhǔn)ANSIB1.5牙型角為29的英制傳動(dòng)螺紋尺寸和公差使用與標(biāo)準(zhǔn)系列相同的公式計(jì)算的標(biāo)準(zhǔn)系列之外的所有直徑與螺距組合。我國(guó)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(guó)標(biāo)準(zhǔn)GB/T5796-1986規(guī)定的梯形螺紋的性能相類同。螺距用每英寸的牙數(shù)來(lái)表示，如：每英寸11牙，則螺距=25.4/11=2.309mm螺紋如何區(qū)分英制和公制？默認(rèn)分類2009-08-2422:03:14閱讀1281評(píng)論0

34、字號(hào)：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)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/T12716-1991PT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/T7306-2000G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(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)

35、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，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(guó)標(biāo)標(biāo)注為Rc公制螺紋用螺距來(lái)表示，美英制螺紋用每英寸內(nèi)的螺紋牙數(shù)來(lái)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(lái)進(jìn)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。1/4，1/2，1/8是英制螺紋

36、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(hào)大徑mmd=D螺距mmp每英寸牙數(shù)tpi中徑mmd2=D2小徑外螺紋d3牙型高底孔直徑H1mm1/16BSW1.5870.423601.3151.0500.2701.153/32BSW2.3810.529482.0411.7030.3381.901/8BSW3.1750.635402.7682.3620.4062.505/32BSW3.9690.793323.4592.9520.5073.203/16BSW4.7621.058244.0843.4070.6773.707/32BSW5.5561.058244.8784.2010.6774.

37、501/4BSW6.3501.270205.5374.7240.8135.105/16BSW7.9381.411187.0346.1310.9046.503/8BSW9.5251.588168.5097.4921.0177.907/16BSW11.1131.814149.9518.7891.1629.201/2BSW12.7002.1171211.3459.9901.35510.405/8BSW15.8762.3091114.39712.9181.47913.403/4BSW19.0512.5401017.42415.7981.62716.257/8BSW22.2262.822920.4191

38、8.6111.80719.251BSW25.4003.175823.36821.3352.03322.0011/8BSW28.5763.629726.25323.9292.32424.5011/4BSW31.7513.629729.42827.1042.32427.2513/8BSW34.9264.233632.21529.5052.71130.2511/2BSW38.1004.233635.39132.6802.71133.5015/8BSW41.2775.080538.02434.7713.25335.5013/4BSW44.4525.080541.19937.9463.25338.501

39、7/8BSW47.6275.64541/244.01240.3983.61441.252BSW50.8025.64541/247.18743.5733.61444.5021/4BSW57.1526.350453.08649.0204.06650.0021/2BSW63.5026.350459.43655.3704.06656.0023/4BSW69.8537.25731/265.20560.5584.64761.503BSW76.2037.25731/271.55666.9094.64768.0031/4BSW82.5537.81631/477.54872.5445.00573.7531/2B

40、SW88.9037.81631/483.89978.8945.00580.0033/4BSW95.2548.467389.83284.4105.42285.504BSW101.6048.467396.18290.7605.42292.0041/4BSW107.9548.83527/8102.29796.6395.65798.0041/2BSW114.3048.83527/8108.647102.9905.657104.2043/4BSW120.6659.23723/4114.740108.6255.915110.005BSW127.0059.23723/4121.090115.1765.915

41、116.5051/4BSW133.3559.67725/8127.159120.9636.196122.5051/2BSW139.7059.67725/8133.509127.3136.196128.5053/4BSW146.05510.16021/2139.549133.0436.506134.506BSW152.40610.16021/2145.900139.3946.506141.00英制普通螺紋一細(xì)牙一BSF英制普通螺紋(惠氏螺紋)一細(xì)牙(BSW)大徑螺距中徑小徑名義尺寸每英寸牙數(shù)牙型高底孔直徑牙型代號(hào)mmmmmm外螺紋BSFtpiH1mmd=Dpd2=D2d33/16BSF4.7630.794324.2553.7470.5084.007/32BSF5.5560.907284.9754.3940.5814.601/4BSF6.3500.977265.7255.1000.6255.309/32BSF7.1420.977266.5185.8930.6256.105/16BSF7.9381.156227.1996.4590.7396.803/8BSF9.5251.27208.71