公制美制英制螺纹对照表.docx
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公制美制英制螺纹对照表
公制/美制/英制螺纹对照表
A型美制螺纹(UNF)常用规格^WZcM#~TL
外螺纹 螺纹wA0$d
-4 9/16"-19牙 14.28 13.08Vz"Ja
-6 11/16''-16 17.46 16.1%,l+?
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-8 13/16''-16 20.64 19.28,r&:
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-10 1''-14 25.40 23.57cWd\Ki
-12 1(3/16)''-12 30.00 28.32-R~!
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-16 1(7/16)''-12 36.51 34.673Ishe"
-20 1(11/16)''-12 42.86 41.0236NENzK
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C型JIC37度美制UNF螺纹常用规格#B;~i6h]
-4 7/16”-20 11.11 10.03:
YZqrcr}
-5 1/2”-20 12.70 11.32_K4Igq
-6 9/16”-18 14.28 13.08/M:
R|91:
_
-8 3/4”-16 19.00 17.68GI&XL'K&
-10 7/8”-14 22.22 20.68[d(@lbV0
-12 1(1/16)"-12 26.98 25.15])d_B\)Kck
-16 1(5/16)"-12 33.33 31.5W?
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-20 1(5/8)"-12 41.28 39.442"31k2H[
-24 1(7/8)"-12 47.62 45.8dQ4VpR9|;
-32 2(1/2)"-12 63.5 61.67ogcEv>0
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英制圆柱管螺纹(BSPP)常用规格8>Y
-4 1/4”-19 13.157 11.55#cG7h(!
-6 3/8”-19 16.662 14.95_j$"fg
-8 1/2”-14 20.955 18.637Ao9MF-
-12 3/4”-14 26.441 24.11`Yk~2t"V
-16 1”-11 33.249 30.29e):
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-20 1(1/4)''-11 41.91 38.95gB4&pPN
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英制圆锥管螺纹(BSPT)常用规格)>_xHc?
基面大径 基准距离/RVy?
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1/4”-19 13.157 6r57&F`{
3/8”-19 16.662 6.4~d0:
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1/2”-14 20.955 8.29q+I
3/4”-14 26.441 9.5L1'PQV
1”-11 33.249 10.4SM57bN
1(1/4)''-11 41.91 12.7AcZ{B<
noSkKqP
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美制圆锥管螺纹(NPT)l|kGp~
1/8”-27 10.24 4c-`'`L^J
1/4”-18 13.60 4q1a*6*YB
3/8”-18 17.04 4.32rSgOQ
1/2”-14 21.22 4.48`i`F$;
3/4”-14 26.57 4.757DZZdH$Fm
1”-11(1/2)” 33.22 4.6*^3&Y@
1(1/4)”-11.5 41.96 4.83
美制外螺纹(2A)常用规格极限尺寸表(粗牙)
打印|推荐|评分
2007-4-2016:
33
美制外螺纹(2A)常用规格极限尺寸表(粗牙)
公称尺寸和每英寸牙数
螺纹系列代号
大径极限
中径极限
小径max
螺胚直径
最小
最大
最小
最大
最小
最大
8-32
UNC
0.1571
0.1631
0.1399
0.1428
0.1248
3.58
3.61
(0.164-32)
3.9903
4.1427
3.5535
3.6271
3.1699
10-24
0.1818
0.1890
0.1586
0.1619
0.1379
4.07
4.10
(0.190-24)
4.6177
4.8006
4.0284
4.1123
3.5027
12-24
0.2078
0.2150
0.1845
0.1879
0.1639
4.72
4.75
(0.216-24)
5.2781
5.4610
4.6863
4.7727
4.1631
1/4-20
0.2408
0.2489
0.2127
0.2164
0.1876
5.45
5.48
(0.250-20)
6.1163
6.3221
5.4026
5.4966
4.7650
5/16-18
0.3026
0.3113
0.2712
0.2752
0.2431
6.94
6.98
(0.3175-18)
7.6860
7.9070
6.8885
6.9901
6.1747
评论(7)
3/8-16 0.3643 0.3737 0.3287 0.3331 0.2970 8.40 8.44
(0.375-16) 9.2532 9.4920 8.3490 8.4607 7.5438
7/16-14 0.4258 0.4361 0.3850 0.3897 0.3485 9.83 9.87
(0.4375-14) 10.8153 11.0769 9.7790 9.8984 8.8519
1/2-13 0.4876 0.4985 0.4435 0.4485 0.4041 11.34 11.38
(0.50-13) 12.3850 12.6619 11.2649 11.3919 10.2641
9/16-12 0.5495 0.5609 0.5016 0.5068 0.4587 12.80 12.84
(0.5625-12) 13.9573 14.2469 12.7406 12.8727 11.6510
5/8-11 0.6113 0.6234 0.5589 0.5644 0.5119 14.27 14.32
(0.625-11) 15.5270 15.8344 14.1961 14.3358 13.0023
3/4-10 0.7353 0.7482 0.6773 0.6832 0.6255 17.28 17.33
(0.750-10) 18.6766 19.0043 17.2034 17.3533 15.8877
7/8-9 0.8592 0.8731 0.7946 0.8009 0.7368 20.27 20.32
(0.875-9) 21.8237 22.1767 20.1828 20.3429 18.7147
1"-8 0.9830 0.9980 0.9100 0.9168 0.8446 23.22 23.27
(1.000-8) 24.9682 25.3492 23.1140 23.2867 21.4528
1.螺胚直径指滚丝前的尺寸,数值为依经验公式计算而得,在实践中需验证。
2.标记示例:
10-24UNC-2A(或0.190-24UNC-2A)、3/8-16UNC-2A(或0.375-16UNC-2A)
(注:
表中上行斜体数值单位为英寸,下行为毫米)
lanjibingyu
2007-4-2016:
34
美制外螺纹(2A)常用规格极限尺寸表(细牙)
公称尺寸和每英寸牙数 螺纹系列代号 大径极限 中径极限 小径max 螺胚直径
最小 最大 最小 最大 最小 最大
8-36 UNF 0.1577 0.1632 0.1424 0.1452 0.1291 3.65 3.67
(0.164-36) 4.0056 4.1453 3.6170 3.6881 3.2791
10-32 0.1831 0.1891 0.1658 0.1688 0.1508 4.24 4.27
(0.190-32) 4.6507 4.8031 4.2113 4.2875 3.8303
12-28 0.2085 0.2150 0.1886 0.1918 0.1712 4.82 4.85
(0.216-28) 5.2959 5.4610 4.7904 4.8717 4.3485
1/4-28 0.2425 0.2490 0.2225 0.2258 0.2052 5.69 5.71
(0.250-28) 6.1595 6.3246 5.6515 5.7353 5.2121
5/16-24 0.3042 0.3114 0.2806 0.2843 0.2603 7.17 7.20
(0.3175-24) 7.7267 7.9096 7.1272 7.2212 6.6116
3/8-24 0.3667 0.3739 0.3430 0.3468 0.3228 8.75 8.78
(0.375-24) 9.3142 9.4971 8.7122 8.8087 8.1991
7/16-20 0.4281 0.4362 0.3995 0.4037 0.3749 10.19 10.23
(0.4375-20) 10.8737 11.0795 10.1473 10.2540 9.5225
1/2-20 0.4906 0.4987 0.4619 0.4662 0.4374 11.78 11.82
(0.50-20) 12.4612 12.6670 11.7323 11.8415 11.1100
9/16-18 0.5524 0.5611 0.5205 0.5250 0.4929 13.27 13.31
(0.5625-18) 14.0310 14.2519 13.2207 13.3350 12.5197
5/8-18 0.6149 0.6236 0.5828 0.5875 0.5554 14.85 14.89
(0.625-18) 15.6185 15.8394 14.8031 14.9225 14.1072
3/4-16 0.7391 0.7485 0.7029 0.7079 0.6718 17.91 17.95
(0.750-16) 18.7731 19.0119 17.8537 17.9807 17.0637
7/8-14 0.8631 0.8734 0.8216 0.8270 0.7858 20.93 20.97
(0.875-14) 21.9227 22.1844 20.8686 21.0058 19.9593
1"-12 0.9868 0.9982 0.9382 0.9441 0.8960 23.90 23.95
(1.000-12) 25.0647 25.3543 23.8303 23.9801 22.7584
1.螺胚直径指滚丝前的尺寸,数值为依经验公式计算而得,在实践中需验证。
2.标记示例:
10-32UNF-2A(或0.190-32UNF-2A)、3/8-24UNF-2A(或0.375-24UNF-2A)
美制外螺纹(2A)常用规格极限尺寸表(粗牙)
上传图片:
美制螺纹尺寸对照表
螺纹规格-美制、英制、公制
美制细牙UNF
2A外螺纹大径UNFUN
2B螺纹小径(UN、UNF)
序号
规格型号
最大
最小
公差
最小
最大
公差
1
7/16"-20
11.079
10.874
0.206
9.728
10.033
0.305
2
1/2"-20
12.667
12.461
0.206
11.328
11.608
0.279
3
9/16"-18
14.252
14.031
0.221
12.751
13.081
0.330
4
3/4"-16
19.012
18.773
0.239
17.323
17.678
0.356
5
7/8"-14
22.184
21.923
0.262
20.269
20.676
0.406
6
11/16-12
26.944
26.655
0.290
24.689
25.146
0.457
7
15/16-12
33.294
33.005
0.290
31.039
31.496
0.457
8
15/8-12
41.229
40.940
0.290
38.989
39.446
0.457
9
17/8-12
47.579
47.290
0.290
45.339
45.796
0.457
10
21/2-12
63.452
63.162
0.290
61.214
61.671
0.457
公制细牙
6g外螺纹大径
6H螺纹小径
1
M10*1
9.974
9.794
0.180
8.917
9.157
0.240
2
M12*1.5
11.968
11.732
0.236
10.376
10.676
0.300
3
M14*1.5
13.968
13.732
0.236
12.376
12.676
0.300
4
M16*1.5
15.968
15.732
0.236
14.376
14.676
0.300
5
M18*1.5
17.968
17.732
0.236
16.376
16.676
0.300
6
M20*1.5
19.968
19.732
0.236
18.376
18.676
0.300
7
M22*1.5
21.968
21.732
0.236
20.376
20.676
0.300
8
M24*1.5
23.968
23.732
0.236
22.376
22.676
0.300
9
M26*1.5
25.968
25.732
0.236
24.376
24.676
0.300
10
M27*1.5
26.968
26.732
0.236
25.376
25.676
0.300
11
M30*1.5
29.968
29.732
0.236
28.376
28.676
0.300
12
M27*2
26.962
26.682
0.280
24.835
25.210
0.375
13
M30*2
29.962
29.682
0.280
27.835
28.210
0.375
14
M33*2
32.962
32.682
0.280
30.835
31.210
0.375
15
M36*2
35.962
35.682
0.280
33.835
34.210
0.375
16
M42*2
41.962
41.682
0.280
39.835
40.21