英制-惠氏螺纹规格
PF、PS、PT、G、BSP管螺纹尺寸
★★→1、G为柱的，R为锥的。
用Rc表示圆锥内螺纹；用Rp表示圆柱内螺纹；用R表示圆锥外螺纹。
非密封管螺纹G在接收用于水、气密封时需要缠绕生料带密封管螺纹Rp在接收用于水、气密封时不需要缠绕生料带Rc Rp R都属于英制螺纹,其中Rc表示圆锥内螺纹,Rp表示圆柱内螺纹,R表示圆锥外螺纹,它们的牙型角都是55度.NPT螺纹属于美制螺纹,牙型角是60度,非密封的管螺纹不带锥度；密封用的管螺纹带1：16的锥度，手册上可查的。
PS3/4螺纹：密封管螺纹具有密封和机械连接两大功能，而非密封管螺纹只有机械连接的功能。
ps就是普通的直管螺纹 3/4是14牙的另外PT是锥管螺纹W才是惠氏螺纹也有叫威氏螺纹的1/4BSP是G1/4吗？BSP为英制管螺纹总体代号，但是分为三种BSPP、BSPT和BSPF。
BSPP〔British Standard Pipe Parallel (thread)〕为英制圆柱管螺纹代号，只有内螺纹，相当于国内的55度圆柱(平行)管螺纹,即G，而BSPT〔British Standard Taper Pipe Thread)是一种英制圆锥管螺纹标准，指螺纹的牙型角为55度，螺纹具有1:16的锥度，相当于国内的55度圆锥管螺纹,即ZG，另外就是BSPF〔British Standard Pipe Fine Hand Taps〕为英制细牙管螺纹；前面两者用於用于密封接合，后边一种用於一般的用于接合。
G3/4-16和PS3/4-16螺纹有啥不同我知道一个是机械结合，一个是密封结合。
但他们的丝锥是不是一样的。
只是小径不同？能不能代替G3/4或PS3/4一般都是14牙你这个3/4-16 是不是特殊型的规格这个首先要确认下另G螺纹代表ISO标准下的螺纹种类一般用于机械结合依据工件的要求会有分通孔盲孔加工〔丝锥的切削锥长不同〕而PS螺纹代表JIS标准下的螺纹种类应用于密封用加工出来的精细度咬合度更高些所以同是3/4-16 但针对的用途不同故不能代替1、BSP是英制管螺纹。
英制螺纹规格表格
英制普通螺纹规格表英制普通螺纹(惠氏螺纹)--小螺纹系列(BA)名义尺寸大径螺距每英寸牙中径小径牙型高底孔直径数牙型代号BA mm tpi mm外螺纹H1mm mmd=D p d2=D2d3No.14BA1No.13BANo.12BA1 No.11BANo.10BANo.9BANo.8BANo.7BA2 No.6BANo.5BANo.4BANo.3BANo.2BANo.1BANo.0BA615°圆锥管螺纹型式和尺寸〔2006-03-1314:38:47〕根本尺寸大径螺距每英寸牙中径小径牙型高度圆弧尺寸底孔尺寸数螺纹代号英寸mm mm tpi mm外螺纹H1r mm d=D p d2=D2d3R1/161/16＂28R1/81/8＂28R1/41/4＂19R3/83/8＂19R1/21/2＂14R3/43/4＂14R11＂1130 R11/411/4＂11R11/211/2＂11R22＂1156 R21/221/2＂1171 R33＂11R44＂11R55＂11136 R66＂11制惠氏螺纹的型式尺寸英制普通螺纹(惠氏螺纹)--粗牙(BSW)名义尺寸大径螺距每英寸牙中径小径牙型高底孔直径数牙型代号Ww mm mm tpi mm外螺纹H1mm d=D p d2=D2d31/16＂BSW603/32＂BSW481/8＂BSW405/32＂BSW323/16＂BSW247/32＂BSW241/4＂BSW205/16＂BSW183/8＂BSW167/16＂BSW141/2＂BSW125/8＂BSW113/4＂BSW107/8＂BSW91＂BSW822 11/8＂BSW711/4＂BSW713/8＂BSW611/2＂BSW615/8＂BSW513/4＂BSW517/8＂BSW41/22＂BSW41/221/4＂BSW450 21/2＂BSW456 23/4＂BSW31/23＂BSW31/268 31/4＂BSW31/431/2＂BSW31/480 33/4＂BSW34＂BSW392 41/4＂BSW27/898 41/2＂BSW27/843/4＂BSW23/4110 5＂BSW23/451/4＂BSW25/851/2＂BSW25/853/4＂BSW21/26＂BSW21/2141英制普通螺纹--细牙--BSF英制普通螺纹(惠氏螺纹)--细牙(BSW)名义尺寸大径螺距每英寸牙中径小径牙型高底孔直径数牙型代号BSF mm tpi mm外螺纹H1mm mmd=D p d2=D2d33/16BSF324 7/32BSF281/4BSF269/32BSF265/16BSF223/8BSF207/16BSF181/2BSF169/16BSF165/8BSF1414 11/16BSF143/4BSF1213/16BSF127/8BSF11BSF1011/8BSF911/4BSF913/8BSF811/2BSF815/8BSF838 13/4BSF72BSF747 21/4BSF653 21/2BSF659 23/4BSF6-3BSF5-31/4BSF5-31/2BSF41/2-33/4BSF41/2-4BSF41/2-41/4BSF4-°圆柱管螺纹的型式和尺寸BritishPipeThread(惠氏管螺纹)--圆柱(BSPP/BSPF)大径螺距每英寸牙中径小径牙型高度底孔尺寸数螺纹代号根本尺寸mm mm tpi mm外螺纹H1mmd=D p d2=D2d3G1/81/8＂28G1/41/4＂19G3/83/8＂1915 G1/21/2＂1419 G5/85/8＂14G3/43/4＂14G7/87/8＂1428 G11＂11G11/811/8＂1135 G11/411/4＂11G13/813/8＂11G11/211/2＂1145 G13/413/4＂1151 G22＂1157G21/421/4＂1163 G21/221/2＂11G23/423/4＂1179 G33＂11G31/431/4＂1191 G31/231/2＂11G33/433/4＂11104 G44＂11G41/241/2＂11123 G55＂11136 G51/251/2＂11G66＂11。
英制螺纹标准对照表
R 3/4
3/4＂
26.441
1.814
14
25.279
24.117
1.162
0.249
23.75
R 1
1＂
33.249
2.309
11
31.77
30.291
1.479
0.317
30
R 1 1/4
1 1/4＂
41.91
2.309
11
40.431
38.952
1.479
0.317
38.5
R 1 1/2
1 1/2＂
47.803
2.309
11
46.324
44.845
1.479
0.317
44.5
R 2
2＂
59.614
2.309
11
58.135
56.656
1.479
0.317
56
R 2 1/2
2 1/2＂
75.184
2.309
11
73.705
72.226
1.479
0.317
71
R 3
3＂
87.884
2.309
4.084
3.407
0.677
3.7
7/32＂
BSW
5.556
1.058
24
4.878
4.201
0.677
4.5
1/4＂
BSW
6.35
1.27
20
5.537
4.724
0.813
5.1
5/16＂
BSW
7.938
1.411
18
英制惠氏螺纹
英制惠氏螺纹（B．S．W．，8．S．F．，Whit．S．和Whit．）1 牙型2 直径与牙数系列3 基本尺寸4 公差5 标记6 螺纹检测7 螺纹加工英制螺纹规格6g外螺纹大径6H内螺纹小径序号规格型号最大最小公差最大最小公差1 M10*1 9.974 9.794 0.180 9.157 8.917 0.2402 M12*1.5 11.968 11.732 0.236 10.676 10.376 0.3003 M14*1.5 13.968 13.732 0.236 12.676 12.376 0.3004 M16*1.5 15.968 15.732 0.236 14.676 14.376 0.3005 M18*1.5 17.968 17.732 0.236 16.676 16.376 0.3006 M20*1.5 19.968 19.732 0.236 18.676 18.376 0.3007 M22*1.5 21.968 21.732 0.236 20.676 20.376 0.3008 M24*1.5 23.968 23.732 0.236 22.676 22.376 0.3009 M26*1.5 25.968 25.732 0.236 24.676 24.376 0.30010 M27*1.5 26.968 26.732 0.236 25.676 25.376 0.30011 M30*1.5 29.968 29.732 0.236 28.676 28.376 0.30012 M27*2 26.962 26.682 0.280 25.210 24.835 0.37513 M30*2 29.962 29.682 0.280 28.210 27.835 0.37514 M33*2 32.962 32.682 0.280 31.210 30.835 0.37515 M36*2 35.962 35.682 0.280 34.210 33.835 0.37516 M42*2 41.962 41.682 0.280 40.210 39.835 0.3751 G1/8-28 9.728 9.514 0.214 8.848 8.566 0.2822 G1/4-19 13.157 12.907 0.250 11.890 11.445 0.4453 G3/8-19 16.662 16.412 0.250 15.395 14.950 0.4454 G1/2-14 20.955 20.671 0.284 19.172 18.631 0.5415 G3/4-14 26.441 26.157 0.284 24.658 24.117 0.5416 G1-11 33.249 32.889 0.360 30.931 30.291 0.6407 G11/4-11 41.910 41.550 0.360 39.592 38.952 0.6408 G11/2-11 47.803 47.443 0.360 45.485 44.845 0.640英制螺纹规格图表螺纹规格大全螺纹的種類记号规格螺纹山的角度SIZE推拔牙规规格公制普通螺纹JIS B 0205 B 0215 JIS B 0251JIS B 020 9 4H、5H、6H、7H公制細螺纹JIS B 0207 B 02154h、6h、8g、8gJIS B 0052M JIS B 02111~300公制普通螺纹JIS B 0205JIS B 0251JIS B 02091級、2級、3級付屬書公制細螺纹JIS B 0207JIS B 0252JIS B 0211付屬書美制普通螺纹 UNC JIS B 0206 NO. 1~43B、2B、1BJIS B 0255JIS B 02 10美制細螺纹 UNF JIS B 0208 NO. 0~11/23A、2A、1AJIS B 0256JIS B 0212UNC NO. 1~4UNF 60°NO. 0~11/2 ANSI B1.3UNEF NO.12~111/163B、2B、1B美制螺纹 UNS ANSI B1.1 NO.10~6 3A、2A、1A─4UN、6UN、8UN12UN、16UN20UN5/16~6 ANSI B1.2 28UN、32UNUNC 0.073~0.1643B、2B、1Ba b s HAND BOOK美制螺纹 UNF MIL-S-7742B 0.060~1.5 3A、2A、1AH28(MIL规格)12UN 1.75 ~6UNJC 0.073~4 UNJF 0.060~1.5美制螺纹 UNJEF MIL-S-8879A 0.216~1.68753B、3A NBS HAND BOOK(MIL规格)8UNJ 1.0625~4 H2812UNJ 0.625~616UNJ 0.4375~6管用平行螺纹(本體规格)G JIS B 0202 55°1/16~6 ─管用平行螺纹(付屬書) PF 1/8~12A級、B級JIS B 0254管用平行母螺纹(本體规格)Rp JIS B 0203 55°1/16~6 ──管用平行母螺纹(付屬書) PS 1/8~12JSI B 0253厚钢電線管螺纹CTG JIS B 0204 55°16 ~104 ──薄钢電線管螺纹CTC JIS B 0204 80°15 ~ 75 ──NPSC 1/8~4 ─NPSM ANSI B2.1 1/8~6 2B、2A ANSI B2.1 美制管用平行螺纹NPSL 60°1/8~12NPSH ANSI B2.1、B2.41/2~4 ─ ANSI B2.4NPSF ANSI B2.2 1/16~3 ANSI B2.2 NPSI 1/16~3英制管用平行螺纹G BS 2779:1973 55°1/16~6 ─公制台形螺纹 TrJIS B0216 B02717 B021830°8 ~3007H、8H、7e、8c30度台形螺纹(付屬書) TM JIS B 021610 ~300──29度台形螺纹TW JIS B 0222 10 ~100愛克姆螺纹 ACME ANSI B1.5 29°5G、4G、3G、2GANSI B1.5(美制) 1/4 ~ 5 6C、5C、4C、3C、2CSTUB ACMEANSI B1.8 ─ ANSI B1.8BUTT ANSI B1.9 7°X45°1/2~ 24class3、class2ANSI B1.9腳踏车用螺纹(一般用)BC JIS B 0225 5/16~19/16 ─ JMAS 4002腳踏车用螺纹(幅條用) 1.8~ 4針车用螺纹 SM JIS B 0226 1/16~13/161級、2級、3級─照相機的三角取付螺纹U JIS B 7103 1/4、3/8 JCIS 3-63照相機鏡頭付屬品取付螺纹M JIS B 7111 60°13.5~95內燃機關用 M、PF JIS B 803110S~18S、1/2S──植入 STUD JIS B 1173 4 ~20汽车用輪胎風嘴用螺纹TV JIS D 4208 5 ~17汽车用 CTV JIS D 9422 5 ~ 8 JMAS 4002電球類內外牙用螺纹E JIS C 7709 10 ~40 JEL 902、903給水栓取付螺纹－JIS B 2061 55°13、20、25 ─钢線用口金－JIS Z 160426.44、59.62常用规格（公制）M1.2×0.25M2.5×0.45M6×0.75M10×0.75M1.4×0.3M2.6×0.45M6×1M10×1M1.6×0.35M3×0.5M7×0.75M10×1.25M1.7×0.25M3×0.6M7×1M10×1.5M1.7×0.35M3.5×0.6M8×0.75M11×1M1.8×0.35M4×0.5M8×1M11×1.5M2×0.4 M4×0.7M8×1.25M12×1M2.2×0.45M5×0.5M9×1M12×1.25M2.3×0.45 M5×0.8M9×1.25M12×1.5常用规格（美制）0-80UNF 5-40UNC 10-32UNF 5/16〃-32UNEF1-64UNC 5-44UNV 12-24UNC 3/8〃-16U NC1-72UNF 6-32UNC 12-28UNF 3/8〃-24UNF2-56UNC 6-40UNF 12-32UNEF 3/8〃-32 UNEF2-64UNF 5/32〃-32UNC 1/4〃-20UNC 7/16〃-14UNC3-48UNC 8-32UNC 1/4〃-28UNF 7/16〃-20UNF3-56UNF 8-36UNF 1/4〃-32UNEF 7/16〃-28UNEF4-40UNC 3/16〃-24UNC 5/16〃-18UNC 1/2〃-13UNC4-48UNF 10-24UNC 5/16〃-24UNF 1/2〃-20UNF常用规格（英制）1/8〃-40 1/2〃-12 1〃-8 2〃-4.55/32〃-32 9/16〃-12 1-1/8〃-7 2-1/8〃-43/16〃-24 5/8〃-11 1-1/4〃-7 2-1/4〃-47/32〃-24 11/16〃-11 1-3/8〃-6 2-1/2〃-41/4〃-20 3/4〃-16 1-1/2〃-6 2-3/4〃-45/16〃-18 13/16〃-10 1-5/8〃-5 3-1/4〃-43/8〃-16 7/8〃-9 1-1/4〃-5 3-1/2〃-47/16〃-14 15/16〃-9 1-7/8〃-4.5 3-3/4〃-44〃-4英制管螺纹对照表英制锥管螺纹对照表公称直径螺距底孔直径底孔深度公称直径螺距底孔直径底孔深度G1/4 1.337 11.4 20 (19) ZG1/8 0.907 8.1 15 (28)G3/8 1.337 14.9 24 (19) ZG1/4 1.337 10.8 20 (19)G3/4 1.814 24.1 31 (14) ZG1/2 1.814 17.9 29 (14)G1 2.309 30.3 37 (11) ZG3/4 1.814 23.2 31 (14)G1-1/4 2.309 38.9 40 (11) G1 2.309 29.2 37 (11)G1-1/2 2.309 44.8 42 (11) 1-1/4 2. 309 37.7 40 (11)G2 2.309 56.6 44 (11) ZG1-1/2 2.309 43.5 42 (11)ZG2 2.309 55.0 44 (11)公制螺纹是以MM（毫米）为单位，它的牙尖角为60度。
英制螺纹规格(BA、R、BSW、BSF、BSPP、BSPF
名义尺寸大径螺距每英寸牙数中径小径牙型高底孔直径BA mm mm tpimm 外螺纹H1mmd=D p d2=D2d3No. 14BA 10.23110.40.860.720.140.75No. 13BA 1.20.25101.6 1.050.90.150.95No. 12BA 1.30.2890.71 1.130.960.171No. 11BA 1.50.3181.93 1.315 1.130.185 1.2No. 10BA 1.70.3572.57 1.49 1.280.21 1.35No. 9BA 1.90.3965.12 1.665 1.430.235 1.5No. 8BA 2.20.4359.07 1.94 1.680.26 1.8No. 7BA 2.50.4852.92 2.21 1.920.292No. 6BA 2.80.5347.92 2.48 2.160.32 2.3No. 5BA 3.20.5943.05 2.845 2.490.355 2.6No. 4BA 3.60.6638.48 3.205 2.810.395 2.95No. 3BA 4.10.7334.79 3.66 3.220.44 3.4No. 2BA 4.70.8131.35 4.215 3.730.485 3.9No. 1BA 5.30.928.22 4.76 4.220.54 4.4No. 0BA6125.4 5.44.80.65基本尺寸大径螺距每英寸牙数中径小径牙型高度底孔尺寸英 寸mm mm tpimm 外螺纹H1mmd=D p d2=D2d3R 1/161/16＂7.7230.907287.142 6.5610.581 6.4R 1/81/8＂9.7280.907289.1478.5660.5818.4R 1/41/4＂13.157 1.3371912.30111.4450.85611.2R 3/83/8＂16.662 1.3371915.80614.950.85614.75R 1/21/2＂20.955 1.8141419.79318.631 1.16218.25R 3/43/4＂26.441 1.8141425.27924.117 1.16223.75R 11＂33.249 2.3091131.7730.291 1.47930R 1 1/4 1 1/4＂41.91 2.3091140.43138.952 1.47938.5R 1 1/2 1 1/2＂47.803 2.3091146.32444.845 1.47944.5R 22＂59.614 2.3091158.13556.656 1.47956R 2 1/2 2 1/2＂75.184 2.3091173.70572.226 1.47971R 33＂87.884 2.3091186.40584.926 1.47985.5R 44＂113.03 2.30911111.551110.072 1.479110.5R 55＂138.43 2.30911136.951135.472 1.479136R 66＂163.832.30911162.351160.8721.479161.5英制普通螺纹 (惠氏螺纹)- 小螺纹系列 (BA)牙型代号螺纹代号55°圆锥管螺纹型式和尺寸螺距=25.4除以每英寸牙数(例：每英寸28牙，即P=25.4/28=0.907),牙高=0.907×0.64=0.581名义尺寸大径螺距每英寸牙数中径小径牙型高底孔直径Ww mm mm tpimm 外螺纹H1mmd=D p d2=D2d31/16＂BSW 1.5870.42360 1.315 1.050.27 1.153/32＂BSW 2.3810.52948 2.041 1.7030.338 1.91/8＂BSW 3.1750.63540 2.768 2.3620.406 2.55/32＂BSW 3.9690.79332 3.459 2.9520.507 3.23/16＂BSW 4.762 1.05824 4.084 3.4070.677 3.77/32＂BSW 5.556 1.05824 4.878 4.2010.677 4.51/4＂BSW 6.35 1.2720 5.537 4.7240.813 5.15/16＂BSW 7.938 1.411187.034 6.1310.904 6.53/8＂BSW 9.525 1.588168.5097.492 1.0177.97/16＂BSW 11.113 1.814149.9518.789 1.1629.21/2＂BSW 12.7 2.1171211.3459.99 1.35510.45/8＂BSW 15.876 2.3091114.39712.918 1.47913.43/4＂BSW 19.051 2.541017.42415.798 1.62716.257/8＂BSW 22.226 2.822920.41918.611 1.80719.251＂BSW 25.4 3.175823.36821.335 2.033221 1/8＂BSW 28.576 3.629726.25323.929 2.32424.51 1/4＂BSW 31.751 3.629729.42827.104 2.32427.251 3/8＂BSW 34.926 4.233632.21529.505 2.71130.251 1/2＂BSW 38.1 4.233635.39132.68 2.71133.51 5/8＂BSW 41.277 5.08538.02434.771 3.25335.51 3/4＂BSW 44.452 5.08541.19937.946 3.25338.51 7/8＂BSW 47.627 5.645 4 1/244.01240.398 3.61441.252＂BSW 50.802 5.645 4 1/247.18743.573 3.61444.52 1/4＂BSW 57.152 6.35453.08649.02 4.066502 1/2＂BSW 63.502 6.35459.43655.37 4.066562 3/4＂BSW 69.8537.257 3 1/265.20560.558 4.64761.53＂BSW 76.2037.257 3 1/271.55666.909 4.647683 1/4＂BSW 82.5537.816 3 1/477.54872.544 5.00573.753 1/2＂BSW 88.9037.816 3 1/483.89978.894 5.005803 3/4＂BSW 95.2548.467389.83284.41 5.42285.54＂BSW 101.6048.467396.18290.76 5.422924 1/4＂BSW 107.9548.835 2 7/8102.29796.639 5.657984 1/2＂BSW 114.3048.835 2 7/8108.647102.99 5.657104.24 3/4＂BSW 120.6659.237 2 3/4114.74108.625 5.9151105＂BSW 127.0059.237 2 3/4121.09115.176 5.915116.55 1/4＂BSW 133.3559.677 2 5/8127.159120.963 6.196122.55 1/2＂BSW 139.7059.677 2 5/8133.509127.313 6.196128.55 3/4＂BSW 146.05510.16 2 1/2139.549133.043 6.506134.56＂BSW152.40610.162 1/2145.9139.3946.506141英制普通螺纹 (惠氏螺纹) - 粗牙 (BSW)牙型代号英制惠氏螺纹的型式尺寸名义尺寸大径螺距每英寸牙数中径小径牙型高底孔直径BSF mm mm tpimm 外螺纹H1mmd=D p d2=D2d33/16BSF 4.7630.79432 4.255 3.7470.50847/32BSF 5.5560.90728 4.975 4.3940.581 4.61/4BSF 6.350.97726 5.725 5.10.625 5.39/32BSF 7.1420.97726 6.518 5.8930.625 6.15/16BSF 7.938 1.156227.199 6.4590.739 6.83/8BSF 9.525 1.27208.7127.8990.8138.37/16BSF 11.113 1.4111810.2099.3040.9049.71/2BSF 12.7 1.5881611.68410.668 1.01711.19/16BSF 14.288 1.5881613.27212.256 1.01712.75/8BSF 15.875 1.8141414.71213.549 1.1621411/16BSF 17.463 1.8141416.315.137 1.16215.53/4BSF 19.05 2.1171217.69316.336 1.35516.7513/16BSF 20.638 2.1171219.28117.924 1.35518.257/8BSF 22.225 2.3091120.74719.269 1.47919.751.00BSF 25.4 2.541023.77422.148 1.62722.751 1/8BSF 28.575 2.822926.76924.963 1.80726.51 1/4BSF 31.75 2.822929.94428.138 1.80728.751 3/8BSF 34.925 3.175832.89330.861 2.03331.51 1/2BSF 38.1 3.175836.06834.036 2.03334.51 5/8BSF 41.275 3.175839.24337.211 2.033381 3/4BSF 44.45 3.629742.12639.802 2.32440.52BSF 50.8 3.629748.47646.152 2.324472 1/4BSF 57.15 4.234654.4451.73 2.711532 1/2BSF 63.5 4.234660.7958.08 2.711592 3/4BSF 69.85 4.234667.1464.43 2.711-3BSF 76.2 5.08572.94669.692 3.253-3 1/4BSF 82.55 5.08579.29676.042 3.253-3 1/2BSF 88.9 5.645 4 1/285.28581.67 3.614-3 3/4BSF 95.25 5.645 4 1/291.63588.02 3.614-4BSF 101.6 5.645 4 1/297.98594.37 3.614-4 1/4BSF107.956.354103.88699.8224.066-牙型代号英制普通螺纹 (惠氏螺纹) - 细牙 (BSF)英制普通螺纹 -- 细牙 -- BSF大径螺距每英寸牙数中径小径牙型高度底孔尺寸mm mm tpimm 外螺纹H1mmd=D p d2=D2d3G 1/81/8＂9.7280.907289.1478.5660.5818.7G 1/41/4＂13.157 1.3371912.30111.4450.85611.6G 3/83/8＂16.662 1.3371915.80614.950.85615G 1/21/2＂20.955 1.8141419.79318.631 1.16219G 5/85/8＂22.911 1.8141421.74920.587 1.16220.75G 3/43/4＂26.441 1.8141425.27924.117 1.16224.5G 7/87/8＂30.201 1.8141429.03927.877 1.16228G 11＂33.249 2.3091131.7730.291 1.47930.5G 1 1/8 1 1/8＂37.897 2.3091136.41834.939 1.47935G 1 1/4 1 1/4＂41.91 2.3091140.43138.952 1.47939.5G 1 3/8 1 3/8＂44.323 2.3091142.84441.365 1.47941.5G 1 1/2 1 1/2＂47.803 2.3091146.32444.845 1.47945G 1 3/4 1 3/4＂53.746 2.3091152.26750.788 1.47951G 22＂59.614 2.3091158.13556.656 1.47957G 2 1/4 2 1/4＂65.71 2.3091164.23162.752 1.47963G 2 1/2 2 1/2＂75.184 2.3091173.70572.226 1.47972.5G 2 3/4 2 3/4＂81.534 2.3091180.05578.576 1.47979G 33＂87.884 2.3091186.40584.926 1.47985.5G 3 1/4 3 1/4＂93.98 2.3091192.50191.022 1.47991G 3 1/2 3 1/2＂100.33 2.3091198.35197.372 1.47997.75G 3 3/4 3 3/4＂106.68 2.30911105.201103.722 1.479104G 44＂113.03 2.30911111.55110.072 1.479110.5G 4 1/2 4 1/2＂125.73 2.30911124.251122.772 1.479123G 55＂138.43 2.30911136.951135.472 1.479136G 5 1/2 5 1/2＂151.13 2.30911149.651148.172 1.479148.5G 66＂163.832.30911162.351160.8721.479161.555°圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) - 圆柱(BSPP/BSPF)螺纹代号基本尺寸。
英制螺纹标准对照表
英制普通螺纹 (惠氏螺纹) -- 小螺纹系列 (BA) 每英寸牙 名义尺寸 大径 螺距 中径 小径 数 牙型代号 外螺纹 BA mm mm tpi mm d=D p d2=D2 d3 No. 14 BA 1 0.23 110.4 0.86 0.72 No. 13 BA 1.2 0.25 101.6 1.05 0.9 No. 12 BA 1.3 0.28 90.71 1.13 0.96 No. 11 BA 1.5 0.31 81.93 1.315 1.13 No. 10 BA 1.7 0.35 72.57 1.49 1.28 No. 9 BA 1.9 0.39 65.12 1.665 1.43 No. 8 BA 2.2 0.43 59.07 1.94 1.68 No. 7 BA 2.5 0.48 52.92 2.21 1.92 No. 6 BA 2.8 0.53 47.92 2.48 2.16 No. 5 BA 3.2 0.59 43.05 2.845 2.49 No. 4 BA 3.6 0.66 38.48 3.205 2.81 No. 3 BA 4.1 0.73 34.79 3.66 3.22 No. 2 BA 4.7 0.81 31.35 4.215 3.73 No. 1 BA 5.3 0.9 28.22 4.76 4.22 No. 0 BA 6 1 25.4 5.4 4.8 牙型高 底孔直径 H1 0.14 0.15 0.17 0.185 0.21 0.235 0.26 0.29 0.32 0.355 0.395 0.44 0.485 0.54 0.6 mm 0.75 0.95 1 1.2 1.35 1.5 1.8 2 2.3 2.6 2.95 3.4 3.9 4.4 5
1
中径
小径
英制普通螺纹规格表
英制普通螺纹规格表英制普通螺纹(惠氏螺纹) -- 小螺纹系列(BA) 名义尺寸牙型代号大径螺距每英寸牙数中径小径牙型高底孔直径BA mm mm tpi mm 外螺纹H1 mm d=D p d2=D2 d3 No. 14 BA 1 0.23 110.4 0.86 0.72 0.14 0.75 No. 13 BA 1.2 0.25 101.6 1.05 0.9 0.15 0.95 No.12 BA 1.3 0.28 90.71 1.13 0.96 0.17 1 No. 11 BA 1.5 0.31 81.93 1.315 1.13 0.185 1.2 No. 10 BA 1.7 0.35 72.57 1.49 1.28 0.21 1.35 No. 9 BA 1.9 0.39 65.12 1.665 1.43 0.235 1.5 No. 8 BA 2.2 0.43 59.07 1.94 1.68 0.261.8 No. 7 BA2.5 0.48 52.92 2.21 1.92 0.29 2 No. 6 BA2.8 0.53 47.92 2.48 2.16 0.32 2.3 No. 5 BA3.2 0.59 43.05 2.845 2.49 0.355 2.6 No. 4 BA 3.6 0.66 38.483.205 2.81 0.395 2.95 No. 3 BA4.1 0.73 34.79 3.66 3.22 0.44 3.4 No. 2 BA 4.7 0.81 31.35 4.215 3.73 0.485 3.9 No. 1 BA5.3 0.9 28.22 4.76 4.22 0.54 4.4 No. 0 BA 6 1 25.4 5.4 4.8 0.6 5 55°圆锥管螺纹型式和尺寸（2006-03-13 14:38:47 ）螺纹代号基本尺寸大径螺距每英寸牙数中径小径牙型高度圆弧尺寸底孔尺寸英寸mm mm tpi mm 外螺纹H1 r mm d=D p d2=D2 d3 R 1/16 1/16＂7.723 0.907 28 7.1426.561 0.581 0.125 6.4R 1/8 1/8＂9.728 0.907 28 9.1478.566 0.581 0.125 8.4R 1/4 1/4＂13.157 1.337 19 12.301 11.445 0.856 0.184 11.2R 3/8 3/8＂16.662 1.337 1915.806 14.95 0.856 0.184 14.75R 1/2 1/2＂20.955 1.814 14 19.793 18.631 1.162 0.249 18.25R 3/4 3/4＂26.4411.814 14 25.279 24.117 1.162 0.249 23.75R 1 1＂33.2492.309 11 31.77 30.291 1.479 0.317 30R 1 1/4 1 1/4＂41.91 2.309 11 40.431 38.952 1.479 0.317 38.5R 1 1/2 11/2＂47.803 2.309 11 46.324 44.845 1.479 0.317 44.5R 2 2＂59.614 2.309 11 58.135 56.656 1.479 0.317 56R 2 1/2 2 1/2＂75.184 2.309 11 73.705 72.226 1.479 0.317 71R 3 3＂87.884 2.309 11 86.405 84.926 1.479 0.317 85.5R 4 4＂113.03 2.309 11 111.551 110.072 1.479 0.317 110.5R 5 5＂138.43 2.309 11 136.951 135.472 1.479 0.317 136R 6 6＂163.83 2.309 11 162.351 160.872 1.479 0.317 161.5制惠氏螺纹的型式尺寸英制普通螺纹(惠氏螺纹) -- 粗牙(BSW)名义尺寸牙型代号大径螺距每英寸牙数中径小径牙型高底孔直径Ww mm mm tpi mm 外螺纹H1 mm d=D p d2=D2 d3 1/16＂BSW 1.5870.423 60 1.315 1.05 0.27 1.15 3/32＂BSW 2.381 0.529 48 2.041 1.703 0.338 1.9 1/8＂BSW 3.175 0.635 402.768 2.362 0.406 2.5 5/32＂BSW3.969 0.793 323.459 2.952 0.507 3.2 3/16＂BSW4.762 1.058 244.084 3.407 0.677 3.7 7/32＂BSW5.556 1.058 244.878 4.201 0.677 4.5 1/4＂BSW 6.35 1.27 205.537 4.724 0.813 5.1 5/16＂BSW 7.938 1.411 18 7.0346.131 0.904 6.5 3/8＂BSW 9.525 1.588 16 8.5097.492 1.017 7.9 7/16＂BSW 11.113 1.814 14 9.9518.7891.162 9.2 1/2＂BSW 12.7 2.117 12 11.345 9.99 1.355 10.4 5/8＂BSW 15.876 2.309 11 14.397 12.918 1.479 13.4 3/4＂BSW 19.051 2.54 10 17.424 15.798 1.627 16.25 7/8＂BSW 22.226 2.822 9 20.419 18.611 1.807 19.25 1＂BSW 25.4 3.175 8 23.368 21.335 2.033 221 1/8＂BSW 28.576 3.629 7 26.253 23.929 2.324 24.51 1/4＂BSW 31.751 3.629 7 29.428 27.104 2.324 27.251 3/8＂BSW 34.926 4.233 6 32.215 29.505 2.711 30.251 1/2＂BSW 38.1 4.233 6 35.391 32.68 2.711 33.5 15/8＂BSW 41.277 5.08 5 38.024 34.771 3.253 35.5 13/4＂BSW 44.452 5.08 5 41.199 37.946 3.253 38.5 17/8＂BSW 47.627 5.645 4 1/2 44.012 40.398 3.614 41.25 2＂BSW 50.802 5.645 4 1/2 47.187 43.573 3.614 44.52 1/4＂BSW 57.152 6.35 4 53.086 49.02 4.066 50 21/2＂BSW 63.502 6.35 4 59.436 55.37 4.066 56 2 3/4＂BSW 69.853 7.257 3 1/2 65.205 60.558 4.647 61.5 3＂BSW 76.203 7.257 3 1/2 71.556 66.909 4.647 68 3 1/4＂BSW 82.553 7.816 3 1/4 77.548 72.544 5.005 73.75 31/2＂BSW 88.903 7.816 3 1/4 83.899 78.894 5.005 803 3/4＂BSW 95.254 8.467 3 89.832 84.41 5.422 85.5 4＂BSW 101.604 8.467 3 96.182 90.76 5.422 92 4 1/4＂BSW 107.954 8.835 2 7/8 102.297 96.639 5.657 98 41/2＂BSW 114.304 8.835 2 7/8 108.647 102.99 5.657 104.2 4 3/4＂BSW 120.665 9.237 2 3/4 114.74108.625 5.915 110 5＂BSW 127.005 9.237 2 3/4121.09 115.176 5.915 116.5 5 1/4＂BSW 133.3559.677 2 5/8 127.159 120.963 6.196 122.5 5 1/2＂BSW 139.705 9.677 2 5/8 133.509 127.313 6.196 128.5 5 3/4＂BSW 146.055 10.16 2 1/2 139.549 133.043 6.506 134.56＂BSW 152.406 10.16 2 1/2 145.9 139.394 6.506 141英制普通螺纹-- 细牙-- BSF 英制普通螺纹(惠氏螺纹)-- 细牙(BSW) 名义尺寸牙型代号大径螺距每英寸牙数中径小径牙型高底孔直径BSF mm mm tpi mm 外螺纹H1 mm d=D p d2=D2 d3 3/16 BSF 4.763 0.794 32 4.255 3.747 0.508 4 7/32 BSF5.556 0.907 28 4.975 4.394 0.581 4.6 1/4 BSF6.350.977 26 5.725 5.1 0.625 5.3 9/32 BSF 7.142 0.977 26 6.518 5.893 0.625 6.1 5/16 BSF 7.938 1.156 22 7.1996.459 0.739 6.8 3/8 BSF 9.525 1.27 20 8.7127.8990.813 8.3 7/16 BSF 11.113 1.411 18 10.209 9.3040.904 9.7 1/2 BSF 12.7 1.588 16 11.684 10.668 1.01711.1 9/16 BSF 14.288 1.588 16 13.272 12.256 1.01712.7 5/8 BSF 15.875 1.814 14 14.712 13.549 1.162 14 11/16 BSF 17.463 1.814 14 16.3 15.137 1.162 15.5 3/4 BSF 19.05 2.117 12 17.693 16.336 1.355 16.75 13/16 BSF 20.638 2.117 12 19.281 17.924 1.355 18.25 7/8 BSF 22.225 2.309 11 20.747 19.269 1.479 19.75 1.00 BSF 25.4 2.54 10 23.774 22.148 1.627 22.75 1 1/8 BSF 28.575 2.822 9 26.769 24.963 1.807 26.5 1 1/4 BSF 31.75 2.822 9 29.944 28.138 1.807 28.75 1 3/8 BSF 34.925 3.175 8 32.893 30.861 2.033 31.5 1 1/2 BSF 38.1 3.175 8 36.068 34.036 2.033 34.5 1 5/8 BSF41.275 3.175 8 39.243 37.211 2.033 38 1 3/4 BSF 44.45 3.629 7 42.126 39.802 2.324 40.5 2 BSF 50.8 3.629 7 48.476 46.152 2.324 47 2 1/4 BSF 57.15 4.234 6 54.44 51.73 2.711 53 2 1/2 BSF 63.5 4.234 6 60.79 58.08 2.711 59 2 3/4 BSF 69.85 4.234 6 67.14 64.432.711 - 3 BSF 76.2 5.08 5 72.946 69.6923.253 -3 1/4 BSF 82.55 5.08 5 79.296 76.042 3.253 - 3 1/2 BSF 88.9 5.645 4 1/2 85.285 81.67 3.614 - 3 3/4 BSF95.25 5.645 4 1/2 91.635 88.02 3.614 - 4 BSF 101.6 5.645 4 1/2 97.985 94.37 3.614 - 4 1/4 BSF 107.95 6.35 4 103.886 99.822 4.066 - 55°圆柱管螺纹的型式和尺寸British Pipe Thread (惠氏管螺纹) -- 圆柱(BSPP/BSPF)螺纹代号基本尺寸大径螺距每英寸牙数中径小径牙型高度底孔尺寸mm mm tpi mm 外螺纹H1 mmd=D p d2=D2 d3 G 1/8 1/8＂9.7280.907 28 9.147 8.566 0.581 8.7 G 1/4 1/4＂13.1571.337 19 12.301 11.445 0.856 11.6 G 3/8 3/8＂16.662 1.337 19 15.806 14.95 0.856 15 G 1/2 1/2＂20.9551.814 14 19.793 18.631 1.162 19 G 5/8 5/8＂22.911 1.814 14 21.749 20.587 1.162 20.75 G 3/4 3/4＂26.441 1.814 14 25.279 24.117 1.162 24.5 G 7/8 7/8＂30.201 1.814 14 29.039 27.877 1.162 28 G 1 1＂33.249 2.309 11 31.77 30.291 1.479 30.5 G 1 1/8 1 1/8＂37.897 2.309 11 36.418 34.939 1.479 35 G 1 1/4 1 1/4＂41.91 2.309 11 40.431 38.952 1.479 39.5 G 1 3/8 1 3/8＂44.323 2.309 11 42.844 41.365 1.479 41.5 G 1 1/2 1 1/2＂47.803 2.309 11 46.324 44.845 1.479 45 G 1 3/4 1 3/4＂53.746 2.309 11 52.267 50.788 1.479 51 G 2 2＂59.614 2.309 11 58.135 56.656 1.479 57 G 2 1/4 2 1/4＂65.71 2.309 11 64.231 62.752 1.479 63 G 2 1/2 2 1/2＂75.184 2.309 11 73.705 72.226 1.479 72.5 G 2 3/4 2 3/4＂81.534 2.309 11 80.055 78.576 1.479 79 G 3 3＂87.884 2.309 11 86.405 84.926 1.479 85.5 G 3 1/4 3 1/4＂93.98 2.309 11 92.501 91.022 1.479 91 G 3 1/2 3 1/2＂100.33 2.309 11 98.351 97.372 1.479 97.75 G 3 3/4 33/4＂106.68 2.309 11 105.201 103.722 1.479 104 G 4 4＂113.03 2.309 11 111.55 110.072 1.479 110.5 G 41/2 4 1/2＂125.73 2.309 11 124.251 122.772 1.479 123G 5 5＂138.43 2.309 11 136.951 135.472 1.479 136 G5 1/2 5 1/2＂151.13 2.309 11 149.651 148.172 1.479 148.5 G6 6＂163.83 2.309 11 162.351 160.872 1.479 161.5。
whit.s.螺纹标准计算方法
whit.s. 惠氏选择组合系列螺纹中径、小径计算方法
以计算 3/8-26 whit.s. 中等级 外螺纹为例 1、中径、小径基本尺寸由以下表得出：
中径基本尺寸=大径－螺纹深度 = 3/8×25.4 － 0.0246×25.4 = 9.525－0.6248 = 8.9002
小径下限尺寸应该是 上限尺寸 减去 （中径公差加下列数据） ，你们提供 的数值是没有加中径公差的
BS84 英制惠氏螺纹标准
3、中径、小径下限尺寸由以下表得出：
中径下限尺寸=中径上限尺寸－中径公差=8.8672－0.0044×25.4 = 8.7554
小径下限尺寸=小径上限尺寸－（中径公差+0.0041）=8.2424-0.0085பைடு நூலகம்= 8.0265
即：中径范围 8.7554～8.8672
小径范围 8.0265～8.2424
小径基本尺寸=大径－2 倍螺纹深度 = 3/8×25.4 － 0.0492×25.4 =9.525－1.2496=8.2754
BS84 英制惠氏螺纹标准
2、中径、小径上限尺寸由以下表得出：
中径上限尺寸=中径基本尺寸－容隙值=8.9002-0.0013×25.4 =8.9002-0.033=8.8672 小径上限尺寸=小径基本尺寸－容隙值=8.2754-0.0013×25.4 =8-0.033=8.2424
英制螺纹-规格--牙型-对照表
基本尺寸 1/8＂ 1/4＂ 3/8＂ 1/2＂ 5/8＂ 3/4＂ 7/8＂ 1＂ 1 1/8＂ 1 1/4＂ 1 3/8＂ 1 1/2＂ 1 3/4＂ 2＂ 2 1/4＂ 2 1/2＂ 2 3/4＂ 3＂ 3 1/4＂ 3 1/2＂ 3 3/4＂ 4＂ 4 1/2＂ 5＂ 5 1/2＂
牙型高 底孔直径
H1
mm
0.27 0.338 0.406 0.507 0.677 0.677 0.813 0.904 1.017 1.162 1.355 1.479 1.627 1.807 2.033 2.324 2.324 2.711 2.711 3.253 3.253 3.614 3.614 4.066 4.066
31.5
BSF
38.1
3.175
8
36.068 34.036 2.033
34.5
BSF 41.275 3.175
8
39.243 37.211 2.033
38
BSF
44.45 3.629
7
42.126 39.802 2.324
40.5
BSF
50.8
3.629
7
48.476 46.152 2.324
47
28
4.975 4.394
6.35
0.977
26
5.725
5.1
7.142 0.977
26
6.518 5.893
7.938 1.156
22
7.199 6.459
9.525
1.27
20
8.712 7.899
牙型高 底孔直径
H1
mm0.508来自40.5814.6
0.625