美制外螺纹常用规格尺寸表

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美制螺纹尺寸对照表

美制螺纹尺寸对照表

最小最大最小最大 8-320.15710.16310.13990.14280.1248(0.164-32) 3.9903 4.1427 3.5535 3.6271 3.1699 10-240.18180.1890.15860.16190.1379(0.190-24) 4.6177 4.8006 4.0284 4.1123 3.5027 12-240.20780.2150.18450.18790.1639(0.216-24) 5.2781 5.461 4.6863 4.7727 4.1631 1/4-200.24080.24890.21270.21640.1876(0.250-20) 6.1163 6.3221 5.4026 5.4966 4.765 5/16-180.30260.31130.27120.27520.2431(0.3175-18)7.6867.907 6.8885 6.9901 6.1747 3/8-160.36430.37370.32870.33310.297(0.375-16)9.25329.4928.3498.46077.5438 7/16-140.42580.43610.3850.38970.3485(0.4375-14)10.815311.07699.7799.89848.8519 1/2-130.48760.49850.44350.44850.4041(0.50-13)12.38512.661911.264911.391910.26419/16-120.54950.56090.50160.50680.4587(0.5625-12)13.957314.246912.740612.872711.651 5/8-110.61130.62340.55890.56440.5119(0.625-11)15.52715.834414.196114.335813.0023 3/4-100.73530.74820.67730.68320.6255(0.750-10)18.676619.004317.203417.353315.8877 7/8-90.85920.87310.79460.80090.7368(0.875-9)21.823722.176720.182820.342918.71471"-80.9830.9980.910.91680.8446(1.000-8)24.968225.349223.11423.286721.4528最小最大最小最大 8-360.15770.16320.14240.14520.1291(0.164-36) 4.0056 4.1453 3.617 3.6881 3.2791 10-320.18310.18910.16580.16880.1508(0.190-32) 4.6507 4.8031 4.2113 4.2875 3.8303 12-280.20850.2150.18860.19180.1712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 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。

美制螺纹标准对照表

美制螺纹标准对照表
0.5020
0.5150
0.5264
0.5323
0.5625
12.85
13.31
(0.5625-18)
12.7508
13.0810
13.3706
13.5204
14.2875
5/8-18
0.5650
0.5780
0.5889
0.5949
0.6250
14.45
14.89
(0.625-18)
14.3510
14.6812
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
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
0.1876
5.45
5.48
(0.250-20)
6.1163

美制外螺纹常用规格尺寸表

美制外螺纹常用规格尺寸表

美制外螺纹(2A)常用规格极限尺寸表(粗牙)
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、3/8-16UNC-2A(或
(注:表中上行斜体数值单位为英寸,下行乘为毫米)
美制外螺纹(2A)常用规格极限尺寸表(细牙)
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、3/8-24UNF-2A(或
美制内螺纹(2B)常用规格极限尺寸表(粗牙)
1.底孔直径指攻丝前钻孔直径,铸铁、黄铜等较软料取小值,钢、青铜等较硬料取大值。

2.标记示例:10-24UNC-2B(或、3/8-16UNC-2B(或
美制内螺纹(2B)常用规格极限尺寸表(细牙)
1.底孔直径指攻丝前钻孔直径,铸铁、黄铜等较软料取小值,钢、青铜等较硬料取大值。

2.标记示例:10-32UNF-2B(或、3/8-24UNF-2B(或。

美制螺纹滚丝规格表

美制螺纹滚丝规格表

大径极限 中径极限 螺胚直径公称尺寸和每英寸牙数螺纹系列代号最小最大最小最大小径max 最小 最大8-320.1571 0.1631 0.1399 0.1428 0.1248 (0.164-32)3.99034.1427 3.5535 3.6271 3.1699 3.58 3.61 10-240.1818 0.1890 0.1586 0.1619 0.1379 (0.190-24)4.6177 4.8006 4.0284 4.1123 3.5027 4.07 4.10 12-240.2078 0.2150 0.1845 0.1879 0.1639 (0.216-24)5.2781 5.4610 4.6863 4.7727 4.1631 4.72 4.75 1/4-200.2408 0.2489 0.2127 0.2164 0.1876 (0.250-20)6.1163 6.3221 5.4026 5.4966 4.7650 5.45 5.48 5/16-180.3026 0.3113 0.2712 0.2752 0.2431 (0.3175-18)7.6860 7.9070 6.8885 6.9901 6.1747 6.94 6.98 3/8-160.3643 0.3737 0.3287 0.3331 0.2970 (0.375-16)9.2532 9.4920 8.3490 8.4607 7.5438 8.40 8.44 7/16-140.4258 0.4361 0.3850 0.3897 0.3485 (0.4375-14)10.8153 11.0769 9.77909.8984 8.8519 9.83 9.87 1/2-130.4876 0.4985 0.4435 0.4485 0.4041 (0.50-13)12.3850 12.6619 11.2649 11.3919 10.2641 11.34 11.38 9/16-120.5495 0.5609 0.5016 0.5068 0.4587 (0.5625-12)13.9573 14.2469 12.7406 12.8727 11.6510 12.80 12.84 5/8-110.6113 0.6234 0.5589 0.5644 0.5119 (0.625-11)15.5270 15.8344 14.1961 14.3358 13.0023 14.27 14.32 3/4-100.7353 0.7482 0.6773 0.6832 0.6255 (0.750-10)18.6766 19.0043 17.2034 17.3533 15.8877 17.28 17.33 7/8-90.8592 0.8731 0.7946 0.8009 0.7368 (0.875-9)21.8237 22.1767 20.1828 20.3429 18.7147 20.27 20.32 1"-80.9830 0.99800.9100 0.9168 0.8446 (1.000-8)UNC24.9682 25.3492 23.1140 23.2867 21.452823.22 23.271.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。

美制螺纹标准对照表(精品)

美制螺纹标准对照表(精品)

美制螺纹标准对照表美制外螺纹(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8-32UNC 0.15710.16310.13990.14280.12483.583.61(0.164-32)3.99034.14273.55353.62713.169910-240.18180.18900.15860.16190.13794.074.10(0.190-24)4.61774.80064.02844.11233.502712-240.20780.21500.18450.18790.16394.724.75(0.216-24)5.27815.46104.68634.77274.16311/4-200.240.24890.21270.21640.18765.455.4808(0.250 -20)6.11636.32215.40265.49664.76505/16-180.30260.31130.27120.27520.24316.946.98(0.31 75-18)7.68607.9076.88856.99016.17473/8-1 60.36430.37370.32870.33310.29708.408.44(0.375-16)9.25329.49208.34908.46077.54387/16-140.42580.43610.38500.38970.34859.839.87(0.4375-14)10.815311.07699.7799.89848.85191/2-130.48760.49850.44350.44850.404111.3411.38(0.50-13)12.385012.661911.264911.391910.26419/16-0.0.5600.50.500.4511125495901668872.802.84(0.5625-12)13.957314.246912.740612.872711.65105/8-110.61130.62340.55890.56440.511914.2714.32(0.625 -11)15.527015.834414.196114.335813.00233/4-100.73530.74820.67730.68320.625517.2817.33(0.750-10)18.676619.004317.203417.353315.88777/8-90.85920.87310.79460.80090.736820.2720.32(0.875-9)21.823722.176720.182820.342918.71471"-80.90.99800.91000.91680.844623.2223.83027(1.000-8)24.968225.349223.114023.286721.45281.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。

美制螺纹标准对照表

美制螺纹标准对照表
6.4008
6.7310
7.0206
7.1552
7.9375
3/8-16
0.3070
0.3210
0.3344
0.3401
0.3750
7.85
8.00
(0.375-16)
7.7978
8.1534
8.4938
8.6385
9.5250
7/16-14
0.3600
0.3760
0.3911
0.3972
0.4375
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
4.9098
5.4864
1/4-20
0.1960
0.2070
0.2175
0.2224
0.2500
5.05
5.20
(0.250-20)
4.9784
5.2578
5.5245
5.6490
6.3500
5/16-18
0.2520
0.2650
0.2764
0.2817
0.31256.45源自6.60(0.3175-18)
8.75
8.78
(0.375-24)
9.3142
9.4971

美制螺纹标准对照表

美制螺纹标准对照表
6.4008
6.7310
7.0206
7.1552
7.9375
3/8-16
0.3070
0.3210
0.3344
0.3401
0.3750
7.85
8.00
(0.375-16)
7.7978
8.1534
8.4938
8.6385
9.5250
7/16-14
0.3600
0.3760
0.3911
0.3972
0.4375
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)
0.4900
0.5084
0.5152
0.5625
12.05
12.30
(0.5625-12)
11.9888
12.4460
12.9134
13.0861
14.2875
5/8-11
0.5270
0.5460
0.5660
0.5732
0.6250
13.45
13.70
(0.625-11)
13.3858
13.8684
19.60
(0.875-9)
19.1770

美制螺纹参数表

美制螺纹参数表

美制螺纹参数表美制外螺纹(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 3.169910-24 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 3.502712-24 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 4.16311/4-20 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 4.76505/16-18 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 6.17473/8-16 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 7.54387/16-14 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 8.85191/2-13 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 10.26419/16-12 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 11.65105/8-11 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 13.00233/4-10 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 15.88777/8-9 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 18.71471"-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 21.45281.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。

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美制外螺纹(2A)常用规格极限尺寸表(粗牙)
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,下行乘25.4为毫米)
美制外螺纹(2A)常用规格极限尺寸表(细牙)
(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)
美制内螺纹(2B )常用规格极限尺寸表(粗牙)
1.底孔直径指攻丝前钻孔直径,铸铁、黄铜等较软料取小值,钢、青铜等较硬料取大值。

2.标记示例:10-24UNC-2B(或 0.190-24UNC-2B)、3/8-16UNC-2B(或 0.375-16UNC-2B)
美制内螺纹(2B )常用规格极限尺寸表(细牙)
1.底孔直径指攻丝前钻孔直径,铸铁、黄铜等较软料取小值,钢、青铜等较硬料取大值。

2.标记示例:10-32UNF-2B(或 0.190-32UNF-2B)、3/8-24UNF-2B(或 0.375-24UNF-2B)
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