公制螺纹 · ISO(牙型角 60°)
最常用的一套。细牙必须标注螺距,粗牙默认不标。 除「每英寸牙数」外,单位均为 mm。
粗牙(Coarse,默认不标螺距)
| 规格 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| M1.6 | 1.600 | 1.171 | 0.215 | 0.350 | 1.25 |
| M2 | 2.000 | 1.509 | 0.245 | 0.400 | 1.60 |
| M2.5 | 2.500 | 1.948 | 0.276 | 0.450 | 2.05 |
| M3 | 3.000 | 2.387 | 0.307 | 0.500 | 2.50 |
| M3.5 | 3.500 | 2.764 | 0.368 | 0.600 | 2.90 |
| M4 | 4.000 | 3.141 | 0.429 | 0.700 | 3.30 |
| M5 | 5.000 | 4.019 | 0.491 | 0.800 | 4.20 |
| M6 | 6.000 | 4.773 | 0.613 | 1.000 | 5.00 |
| M7 | 7.000 | 5.773 | 0.613 | 1.000 | 6.00 |
| M8 | 8.000 | 6.466 | 0.767 | 1.250 | 6.80 |
| M10 | 10.000 | 8.160 | 0.920 | 1.500 | 8.50 |
| M12 | 12.000 | 9.853 | 1.074 | 1.750 | 10.20 |
| M14 | 14.000 | 11.546 | 1.227 | 2.000 | 12.00 |
| M16 | 16.000 | 13.546 | 1.227 | 2.000 | 14.00 |
| M18 | 18.000 | 14.933 | 1.534 | 2.500 | 15.50 |
| M20 | 20.000 | 16.933 | 1.534 | 2.500 | 17.50 |
| M22 | 22.000 | 18.933 | 1.534 | 2.500 | 19.50 |
| M24 | 24.000 | 20.319 | 1.840 | 3.000 | 21.00 |
| M27 | 27.000 | 23.319 | 1.840 | 3.000 | 24.00 |
| M30 | 30.000 | 25.706 | 2.147 | 3.500 | 26.50 |
| M33 | 33.000 | 28.706 | 2.147 | 3.500 | 29.50 |
| M36 | 36.000 | 31.093 | 2.454 | 4.000 | 32.00 |
| M39 | 39.000 | 34.093 | 2.454 | 4.000 | 35.00 |
| M42 | 42.000 | 36.479 | 2.760 | 4.500 | 37.50 |
| M45 | 45.000 | 39.479 | 2.760 | 4.500 | 40.50 |
| M48 | 48.000 | 41.866 | 3.067 | 5.000 | 43.00 |
| M52 | 52.000 | 45.866 | 3.067 | 5.000 | 47.00 |
| M56 | 56.000 | 49.252 | 3.374 | 5.500 | 50.50 |
| M60 | 60.000 | 53.252 | 3.374 | 5.500 | 54.50 |
| M64 | 64.000 | 56.639 | 3.681 | 6.000 | 58.00 |
细牙(Fine,必须标螺距)
| 规格 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| M8×1 | 8.000 | 6.773 | 0.613 | 1.000 | 7.00 |
| M8×0.75 | 8.000 | 7.080 | 0.460 | 0.750 | 7.25 |
| M10×1.25 | 10.000 | 8.466 | 0.767 | 1.250 | 8.80 |
| M10×1 | 10.000 | 8.773 | 0.613 | 1.000 | 9.00 |
| M10×0.75 | 10.000 | 9.080 | 0.460 | 0.750 | 9.25 |
| M12×1.5 | 12.000 | 10.160 | 0.920 | 1.500 | 10.50 |
| M12×1.25 | 12.000 | 10.466 | 0.767 | 1.250 | 10.80 |
| M12×1 | 12.000 | 10.773 | 0.613 | 1.000 | 11.00 |
| M14×1.5 | 14.000 | 12.160 | 0.920 | 1.500 | 12.50 |
| M16×1.5 | 16.000 | 14.160 | 0.920 | 1.500 | 14.50 |
| M18×2 | 18.000 | 15.546 | 1.227 | 2.000 | 16.00 |
| M18×1.5 | 18.000 | 16.160 | 0.920 | 1.500 | 16.50 |
| M20×2 | 20.000 | 17.546 | 1.227 | 2.000 | 18.00 |
| M20×1.5 | 20.000 | 18.160 | 0.920 | 1.500 | 18.50 |
| M22×2 | 22.000 | 19.546 | 1.227 | 2.000 | 20.00 |
| M22×1.5 | 22.000 | 20.160 | 0.920 | 1.500 | 20.50 |
| M24×2 | 24.000 | 21.546 | 1.227 | 2.000 | 22.00 |
| M24×1.5 | 24.000 | 22.160 | 0.920 | 1.500 | 22.50 |
| M27×2 | 27.000 | 24.546 | 1.227 | 2.000 | 25.00 |
| M30×2 | 30.000 | 27.546 | 1.227 | 2.000 | 28.00 |
| M30×1.5 | 30.000 | 28.160 | 0.920 | 1.500 | 28.50 |
| M36×3 | 36.000 | 32.319 | 1.840 | 3.000 | 33.00 |
| M42×3 | 42.000 | 38.319 | 1.840 | 3.000 | 39.00 |
| M48×3 | 48.000 | 44.319 | 1.840 | 3.000 | 45.00 |
美制统一螺纹 · UNC / UNF(牙型角 60°)
UNC 粗牙、UNF 细牙。规格写法「号数-每英寸牙数」或「英寸分数-每英寸牙数」。钻头栏给出对应的钻号/字母钻与毫米值。 除「每英寸牙数」外,单位均为 mm。
UNC 粗牙
| 规格 | 每英寸牙数 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| #4-40 | 40 | 2.845 | 2.066 | 0.390 | 0.635 | #43(2.26) |
| #5-40 | 40 | 3.175 | 2.396 | 0.390 | 0.635 | #38(2.58) |
| #6-32 | 32 | 3.505 | 2.531 | 0.487 | 0.794 | #36(2.71) |
| #8-32 | 32 | 4.166 | 3.192 | 0.487 | 0.794 | #29(3.45) |
| #10-24 | 24 | 4.826 | 3.528 | 0.649 | 1.058 | #25(3.80) |
| #12-24 | 24 | 5.486 | 4.188 | 0.649 | 1.058 | #16(4.50) |
| 1/4-20 | 20 | 6.350 | 4.792 | 0.779 | 1.270 | #7(5.11) |
| 5/16-18 | 18 | 7.938 | 6.206 | 0.866 | 1.411 | F(6.53) |
| 3/8-16 | 16 | 9.525 | 7.577 | 0.974 | 1.588 | 5/16″(7.94) |
| 7/16-14 | 14 | 11.112 | 8.887 | 1.113 | 1.814 | U(9.35) |
| 1/2-13 | 13 | 12.700 | 10.303 | 1.199 | 1.954 | 27/64″(10.72) |
| 9/16-12 | 12 | 14.288 | 11.691 | 1.298 | 2.117 | 31/64″(12.30) |
| 5/8-11 | 11 | 15.875 | 13.042 | 1.416 | 2.309 | 17/32″(13.49) |
| 3/4-10 | 10 | 19.050 | 15.934 | 1.558 | 2.540 | 21/32″(16.67) |
| 7/8-9 | 9 | 22.225 | 18.763 | 1.731 | 2.822 | 49/64″(19.45) |
| 1-8 | 8 | 25.400 | 21.505 | 1.948 | 3.175 | 7/8″(22.23) |
| 1 1/8-7 | 7 | 28.575 | 24.123 | 2.226 | 3.629 | 63/64″(25.00) |
| 1 1/4-7 | 7 | 31.750 | 27.298 | 2.226 | 3.629 | 1 7/64″(28.18) |
| 1 3/8-6 | 6 | 34.925 | 29.731 | 2.597 | 4.233 | 1 7/32″(30.96) |
| 1 1/2-6 | 6 | 38.100 | 32.906 | 2.597 | 4.233 | 1 11/32″(34.13) |
UNF 细牙
| 规格 | 每英寸牙数 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| #4-48 | 48 | 2.845 | 2.196 | 0.325 | 0.529 | #42(2.37) |
| #6-40 | 40 | 3.505 | 2.726 | 0.390 | 0.635 | #33(2.87) |
| #8-36 | 36 | 4.166 | 3.300 | 0.433 | 0.706 | #29(3.45) |
| #10-32 | 32 | 4.826 | 3.852 | 0.487 | 0.794 | #21(4.04) |
| 1/4-28 | 28 | 6.350 | 5.237 | 0.556 | 0.907 | #3(5.41) |
| 5/16-24 | 24 | 7.938 | 6.639 | 0.649 | 1.058 | I(6.91) |
| 3/8-24 | 24 | 9.525 | 8.227 | 0.649 | 1.058 | Q(8.43) |
| 7/16-20 | 20 | 11.112 | 9.554 | 0.779 | 1.270 | 25/64″(9.92) |
| 1/2-20 | 20 | 12.700 | 11.142 | 0.779 | 1.270 | 29/64″(11.51) |
| 9/16-18 | 18 | 14.288 | 12.556 | 0.866 | 1.411 | 33/64″(13.10) |
| 5/8-18 | 18 | 15.875 | 14.144 | 0.866 | 1.411 | 37/64″(14.68) |
| 3/4-16 | 16 | 19.050 | 17.102 | 0.974 | 1.588 | 11/16″(17.46) |
| 7/8-14 | 14 | 22.225 | 19.999 | 1.113 | 1.814 | 51/64″(20.24) |
| 1-12 | 12 | 25.400 | 22.803 | 1.298 | 2.117 | 59/64″(23.42) |
| 1 1/8-12 | 12 | 28.575 | 25.978 | 1.298 | 2.117 | 1 3/64″(26.59) |
| 1 1/4-12 | 12 | 31.750 | 29.153 | 1.298 | 2.117 | 1 11/64″(29.77) |
英制惠氏螺纹 · BSW / BSF(牙型角 55°)
英国老标准,修进口设备时还会碰到。牙型角 55°,跟美制 60° 不能互换——拧得进去也是错的。 除「每英寸牙数」外,单位均为 mm。
BSW 粗牙(Whitworth)
| 规格 | 每英寸牙数 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| 1/8″ | 40 | 3.175 | 2.362 | 0.407 | 0.635 | 2.50 |
| 3/16″ | 24 | 4.762 | 3.407 | 0.678 | 1.058 | 3.70 |
| 1/4″ | 20 | 6.350 | 4.724 | 0.813 | 1.270 | 5.10 |
| 5/16″ | 18 | 7.938 | 6.130 | 0.904 | 1.411 | 6.50 |
| 3/8″ | 16 | 9.525 | 7.492 | 1.017 | 1.588 | 7.90 |
| 7/16″ | 14 | 11.112 | 8.789 | 1.162 | 1.814 | 9.30 |
| 1/2″ | 12 | 12.700 | 9.989 | 1.355 | 2.117 | 10.50 |
| 9/16″ | 12 | 14.288 | 11.577 | 1.355 | 2.117 | 12.10 |
| 5/8″ | 11 | 15.875 | 12.918 | 1.479 | 2.309 | 13.50 |
| 3/4″ | 10 | 19.050 | 15.797 | 1.626 | 2.540 | 16.50 |
| 7/8″ | 9 | 22.225 | 18.611 | 1.807 | 2.822 | 19.30 |
| 1″ | 8 | 25.400 | 21.334 | 2.033 | 3.175 | 22.00 |
| 1 1/8″ | 7 | 28.575 | 23.928 | 2.323 | 3.629 | 24.80 |
| 1 1/4″ | 7 | 31.750 | 27.103 | 2.323 | 3.629 | 28.00 |
| 1 1/2″ | 6 | 38.100 | 32.679 | 2.711 | 4.233 | 33.80 |
BSF 细牙(British Standard Fine)
| 规格 | 每英寸牙数 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| 3/16″ | 32 | 4.762 | 3.746 | 0.508 | 0.794 | 3.90 |
| 1/4″ | 26 | 6.350 | 5.099 | 0.626 | 0.977 | 5.40 |
| 5/16″ | 22 | 7.938 | 6.459 | 0.739 | 1.155 | 6.80 |
| 3/8″ | 20 | 9.525 | 7.899 | 0.813 | 1.270 | 8.30 |
| 7/16″ | 18 | 11.112 | 9.305 | 0.904 | 1.411 | 9.70 |
| 1/2″ | 16 | 12.700 | 10.667 | 1.017 | 1.588 | 11.10 |
| 9/16″ | 16 | 14.288 | 12.254 | 1.017 | 1.588 | 12.70 |
| 5/8″ | 14 | 15.875 | 13.552 | 1.162 | 1.814 | 14.00 |
| 3/4″ | 12 | 19.050 | 16.339 | 1.355 | 2.117 | 17.00 |
| 7/8″ | 11 | 22.225 | 19.268 | 1.479 | 2.309 | 19.90 |
| 1″ | 10 | 25.400 | 22.147 | 1.626 | 2.540 | 22.80 |
圆柱管螺纹 · G(BSPP,平行 55°)
牙是直的、不带锥度,靠密封圈/垫圈/端面密封。注意「G 1/2」指的是管子内径约 1/2″,螺纹大径其实是 20.955 mm。 除「每英寸牙数」外,单位均为 mm。
G 系列(ISO 228 / BSPP)
| 规格 | 每英寸牙数 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| G 1/8 | 28 | 9.728 | 8.566 | 0.581 | 0.907 | 8.40 |
| G 1/4 | 19 | 13.157 | 11.445 | 0.856 | 1.337 | 11.20 |
| G 3/8 | 19 | 16.662 | 14.950 | 0.856 | 1.337 | 14.70 |
| G 1/2 | 14 | 20.955 | 18.632 | 1.162 | 1.814 | 18.50 |
| G 5/8 | 14 | 22.911 | 20.588 | 1.162 | 1.814 | 20.50 |
| G 3/4 | 14 | 26.441 | 24.118 | 1.162 | 1.814 | 24.00 |
| G 7/8 | 14 | 30.201 | 27.878 | 1.162 | 1.814 | 27.75 |
| G 1 | 11 | 33.249 | 30.292 | 1.479 | 2.309 | 30.00 |
| G 1 1/8 | 11 | 37.897 | 34.940 | 1.479 | 2.309 | 34.50 |
| G 1 1/4 | 11 | 41.910 | 38.953 | 1.479 | 2.309 | 38.80 |
| G 1 1/2 | 11 | 47.803 | 44.846 | 1.479 | 2.309 | 44.80 |
| G 1 3/4 | 11 | 53.746 | 50.789 | 1.479 | 2.309 | 50.50 |
| G 2 | 11 | 59.614 | 56.657 | 1.479 | 2.309 | 56.50 |
| G 2 1/2 | 11 | 75.184 | 72.227 | 1.479 | 2.309 | 72.00 |
| G 3 | 11 | 87.884 | 84.927 | 1.479 | 2.309 | 84.50 |
梯形螺纹(T 型)· Tr / Acme
传动用螺纹,常见于丝杠、升降机构、压紧螺杆。都内外螺纹配对加工,最后一列给的是内螺纹(螺母)底孔。 除「每英寸牙数」外,单位均为 mm。
Tr 梯形螺纹(ISO,牙型角 30°)
| 规格 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 内螺纹底孔 mm |
| Tr 8×1.5 | 8.000 | 6.000 | 1.000 | 1.500 | 6.50 |
| Tr 10×2 | 10.000 | 7.500 | 1.250 | 2.000 | 8.00 |
| Tr 12×3 | 12.000 | 8.500 | 1.750 | 3.000 | 9.00 |
| Tr 14×3 | 14.000 | 10.500 | 1.750 | 3.000 | 11.00 |
| Tr 16×4 | 16.000 | 11.500 | 2.250 | 4.000 | 12.00 |
| Tr 18×4 | 18.000 | 13.500 | 2.250 | 4.000 | 14.00 |
| Tr 20×4 | 20.000 | 15.500 | 2.250 | 4.000 | 16.00 |
| Tr 22×5 | 22.000 | 16.500 | 2.750 | 5.000 | 17.00 |
| Tr 24×5 | 24.000 | 18.500 | 2.750 | 5.000 | 19.00 |
| Tr 26×5 | 26.000 | 20.500 | 2.750 | 5.000 | 21.00 |
| Tr 28×5 | 28.000 | 22.500 | 2.750 | 5.000 | 23.00 |
| Tr 30×6 | 30.000 | 23.000 | 3.500 | 6.000 | 24.00 |
| Tr 32×6 | 32.000 | 25.000 | 3.500 | 6.000 | 26.00 |
| Tr 34×6 | 34.000 | 27.000 | 3.500 | 6.000 | 28.00 |
| Tr 36×6 | 36.000 | 29.000 | 3.500 | 6.000 | 30.00 |
| Tr 38×7 | 38.000 | 30.000 | 4.000 | 7.000 | 31.00 |
| Tr 40×7 | 40.000 | 32.000 | 4.000 | 7.000 | 33.00 |
| Tr 44×7 | 44.000 | 36.000 | 4.000 | 7.000 | 37.00 |
| Tr 48×8 | 48.000 | 39.000 | 4.500 | 8.000 | 40.00 |
| Tr 52×8 | 52.000 | 43.000 | 4.500 | 8.000 | 44.00 |
| Tr 56×9 | 56.000 | 46.000 | 5.000 | 9.000 | 47.00 |
| Tr 60×9 | 60.000 | 50.000 | 5.000 | 9.000 | 51.00 |
| Tr 70×10 | 70.000 | 59.000 | 5.500 | 10.000 | 60.00 |
| Tr 80×10 | 80.000 | 69.000 | 5.500 | 10.000 | 70.00 |
Acme 梯形螺纹(美制,牙型角 29°)
| 规格 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 内螺纹底孔 mm |
| 1/4-16″ | 6.350 | 4.254 | 1.048 | 1.588 | 4.76 |
| 5/16-14″ | 7.938 | 5.615 | 1.161 | 1.814 | 6.12 |
| 3/8-12″ | 9.525 | 6.900 | 1.312 | 2.117 | 7.41 |
| 1/2-10″ | 12.700 | 9.652 | 1.524 | 2.540 | 10.16 |
| 5/8-8″ | 15.875 | 12.192 | 1.842 | 3.175 | 12.70 |
| 3/4-6″ | 19.050 | 14.309 | 2.371 | 4.233 | 14.82 |
| 7/8-6″ | 22.225 | 17.484 | 2.371 | 4.233 | 17.99 |
| 1-5″ | 25.400 | 19.812 | 2.794 | 5.080 | 20.32 |
| 1 1/8-5″ | 28.575 | 22.987 | 2.794 | 5.080 | 23.49 |
| 1 1/4-5″ | 31.750 | 26.162 | 2.794 | 5.080 | 26.67 |
| 1 1/2-4″ | 38.100 | 31.242 | 3.429 | 6.350 | 31.75 |
| 2-4″ | 50.800 | 43.942 | 3.429 | 6.350 | 44.45 |
锥度螺纹(密封用)· NPT / BSPT / ZM
牙带 1:16 锥度,靠牙面自身密封,必须缠生料带或涂螺纹密封胶。底孔指小端(孔口)直径。 除「每英寸牙数」外,单位均为 mm。
NPT 美制锥管螺纹(牙型角 60°)
| 规格 | 每英寸牙数 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| NPT 1/16 | 27 | 7.895 | 6.390 | 0.753 | 0.941 | 6.10 |
| NPT 1/8 | 27 | 10.242 | 8.737 | 0.753 | 0.941 | 8.60 |
| NPT 1/4 | 18 | 13.616 | 11.358 | 1.129 | 1.411 | 11.10 |
| NPT 3/8 | 18 | 17.055 | 14.797 | 1.129 | 1.411 | 14.70 |
| NPT 1/2 | 14 | 21.223 | 18.320 | 1.451 | 1.814 | 18.30 |
| NPT 3/4 | 14 | 26.568 | 23.665 | 1.451 | 1.814 | 23.70 |
| NPT 1 | 11.5 | 33.228 | 29.694 | 1.767 | 2.209 | 29.70 |
| NPT 1 1/4 | 11.5 | 41.985 | 38.451 | 1.767 | 2.209 | 38.40 |
| NPT 1 1/2 | 11.5 | 48.054 | 44.520 | 1.767 | 2.209 | 44.50 |
| NPT 2 | 11.5 | 60.092 | 56.558 | 1.767 | 2.209 | 56.50 |
BSPT 英制锥管螺纹(55°,代号 R / Rc,日本称 PT)
| 规格 | 每英寸牙数 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| R 1/8 | 28 | 9.728 | 8.566 | 0.581 | 0.907 | 8.40 |
| R 1/4 | 19 | 13.157 | 11.445 | 0.856 | 1.337 | 11.20 |
| R 3/8 | 19 | 16.662 | 14.950 | 0.856 | 1.337 | 14.70 |
| R 1/2 | 14 | 20.955 | 18.632 | 1.162 | 1.814 | 18.50 |
| R 3/4 | 14 | 26.441 | 24.118 | 1.162 | 1.814 | 24.00 |
| R 1 | 11 | 33.249 | 30.292 | 1.479 | 2.309 | 30.00 |
| R 1 1/4 | 11 | 41.910 | 38.953 | 1.479 | 2.309 | 38.80 |
| R 1 1/2 | 11 | 47.803 | 44.846 | 1.479 | 2.309 | 44.80 |
| R 2 | 11 | 59.614 | 56.657 | 1.479 | 2.309 | 56.50 |
米制锥螺纹 ZM(60°,锥度 1:16)
| 规格 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm |
| ZM10 | 10.000 | 8.400 | 0.800 | 1.000 | 8.40 |
| ZM14 | 14.000 | 11.600 | 1.200 | 1.500 | 11.60 |
| ZM18 | 18.000 | 15.600 | 1.200 | 1.500 | 15.60 |
| ZM22 | 22.000 | 19.600 | 1.200 | 1.500 | 19.60 |
| ZM27 | 27.000 | 23.800 | 1.600 | 2.000 | 23.80 |
| ZM33 | 33.000 | 29.800 | 1.600 | 2.000 | 29.80 |
| ZM42 | 42.000 | 38.800 | 1.600 | 2.000 | 38.80 |
| ZM48 | 48.000 | 44.800 | 1.600 | 2.000 | 44.80 |
| ZM60 | 60.000 | 56.800 | 1.600 | 2.000 | 56.80 |
自定义螺纹 · 非标规格计算
图纸上碰到非标螺纹、或者上面的表里查不到的规格,把大径和螺距填进去,直接算出小径、牙高和底孔钻头。算完可以存进下面的表,下次直接搜关键字就能翻出来(存在本机浏览器里,换电脑不会同步)。
我保存的自定义螺纹
| 规格 | 大径 mm | 小径 mm | 牙高 mm | 螺距 mm | 底孔钻头 mm | |
还没有保存任何自定义规格。上面填好参数点「保存到下表」即可。