美制螺纹标准对照表
美制螺纹标准对照表
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 0.1571 0.1631 0.1399 0.1428 0.12483.58 3.61(0.164-32) 3.9903 4.1427 3.5535 3.6271 3.169910-24 0.1818 0.1890 0.1586 0.1619 0.13794.07 4.10(0.190-24) 4.6177 4.8006 4.0284 4.1123 3.502712-24 0.2078 0.2150 0.1845 0.1879 0.16394.72 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 0.18765.45 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 0.24316.94 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 0.29708.40 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 0.34859.83 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 0.404111.34 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 0.458712.80 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 0.511914.27 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 0.625517.28 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 0.736820.27 20.32(0.875-9) 21.8237 22.1767 20.1828 20.3429 18.71471"-8 0.9830 0.9980 0.9100 0.9168 0.844623.22 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。
美制螺纹标准对照表
5/8-18
3/4-16
7/8-14
1"-12
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
精心搜集整理,只为你的需要
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,下行为毫米)
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
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)
公称尺寸和每英寸牙数螺纹ຫໍສະໝຸດ 列代号小径极限中径极限
大径min
底孔直径
最小
最大
最小
最大
最小
最大
8-36
UNF
10-32
12-28
1/4-28
5/16-24
3/8-24
7/16-20
1/2-20
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
8-32
UNC
10-24
12-24
1/4-20
5/16-18
3/8-16
7/16-14
美制统一螺纹表UNC,UNF
第 2 页,共 45 页
美制标准系列统一螺
公称 基本大经 牙数 系列 直径 D,d(in) n 代号 9/16 0.5625 9/16 0.5625 5/8 5/8 5/8 5/8 5/8 5/8 5/8 5/8 0.6250 0.6250 0.6250 0.6250 0.6250 0.6250 0.6250 0.6250 28 32 11 12 16 18 20 24 28 32 12 16 20 24 28 32 10 12 16 20 28 32 12 16 UN UN UNC UN UN UNF UN UNEF UN UN UN UN UN UNEF UN UN UNC UN UNF UNEF UN UN UN UN 基本中经 D2,d2 0.5393 0.5422 0.5660 0.5709 0.5844 0.5889 0.5925 0.5979 0.6018 0.6047 0.6334 0.6469 0.6550 0.6604 0.6643 0.6672 0.6850 0.6959 0.7094 0.7175 0.7268 0.7297 0.7584 0.7719 UNR外螺纹设 内螺纹基本小 计牙型小径 径D1 d3(参考) 0.5238 0.5287 0.5266 0.5348 0.5573 0.5649 0.5709 0.5799 0.5863 0.5912 0.5973 0.6198 0.6334 0.6424 0.6488 0.6537 0.6417 0.6598 0.6823 0.6959 0.7113 0.7162 0.7223 0.7448 0.5187 0.5242 0.5135 0.5228 0.5483 0.5568 0.5637 0.5739 0.5812 0.5867 0.5853 0.6108 0.6262 0.6364 0.6437 0.6492 0.6273 0.6478 0.6733 0.6887 0.7062 0.7117 0.7103 0.7358 公制对照表(mm) 基本大经 D,d 14.2875 14.2875 15.8750 15.8750 15.8750 15.8750 15.8750 15.8750 15.8750 15.8750 17.4625 17.4625 17.4625 17.4625 17.4625 17.4625 19.0500 19.0500 19.0500 19.0500 19.0500 19.0500 20.6375 20.6375 (内)小径D1 13.3055 13.4282 13.3753 13.5836 14.1565 14.3474 14.5002 14.7293 14.8930 15.0157 15.1711 15.7440 16.0877 16.3168 16.4805 16.6032 16.3004 16.7586 17.3315 17.6752 18.0680 18.1907 18.3461 18.9190 (外)小径d3 13.3055 13.4282 13.3753 13.5836 14.1565 14.3474 14.5002 14.7293 14.8930 15.0157 15.1711 15.7440 16.0877 16.3168 16.4805 16.6032 16.3004 16.7586 17.3315 17.6752 18.0680 18.1907 18.3461 18.9190 螺距P 0.9071 0.7938 2.3091 2.1167 1.5875 1.4111 1.2700 1.0583 0.9071 0.7938 2.1167 1.5875 1.2700 1.0583 0.9071 0.7938 2.5400 2.1167 1.5875 1.2700 0.9071 0.7938 2.1167 1.5875 中经公差 容隙 2A 0.003715 0.003521 0.005501 0.005443 0.004769 0.004652 0.004324 0.004004 0.003759 0.003565 0.005485 0.004811 0.004366 0.004046 0.003801 0.003607 0.005894 0.005524 0.005024 0.004405 0.003840 0.003646 0.005561 0.004887 es 1A和2A 0.001115 0.001056 0.001650 0.001633 0.001431 0.001396 0.001297 0.001201 0.001128 0.001070 0.001646 0.001443 0.001310 0.001214 0.001140 0.001082 0.001768 0.001657 0.001507 0.001322 0.001152 0.001094 0.001668 0.001466
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 0.1571 0.1631 0.1399 0.1428 0.12483.58 3.61(0.164-32) 3.9903 4.1427 3.5535 3.6271 3.169910-24 0.1818 0.1890 0.1586 0.1619 0.13794.07 4.10 (0.190-24) 4.6177 4.8006 4.0284 4.1123 3.502712-24 0.2078 0.2150 0.1845 0.1879 0.16394.72 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 0.18765.45 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 0.24316.94 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 0.29708.40 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 0.34859.83 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 0.404111.34 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 0.458712.80 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 0.511914.27 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 0.625517.28 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 0.736820.27 20.32 (0.875-9) 21.8237 22.1767 20.1828 20.3429 18.71471"-8 0.9830 0.9980 0.9100 0.9168 0.844623.22 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。
美制螺纹标准对照表
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 0.15710.16310.13990.14280.12483.58 3.61(0.164-32) 3.9903 4.1427 3.5535 3.6271 3.169910-240.18180.18900.15860.16190.13794.07 4.10 (0.190-24) 4.6177 4.8006 4.0284 4.1123 3.502712-240.20780.21500.18450.18790.16394.72 4.75 (0.216-24)5.2781 5.4610 4.6863 4.7727 4.16311/4-200.24080.24890.21270.21640.18765.45 5.48 (0.250-20)6.1163 6.3221 5.4026 5.4966 4.76505/16-180.30260.31130.27120.27520.24316.94 6.98 (0.3175-18)7.68607.9070 6.8885 6.9901 6.17473/8-160.36430.37370.32870.33310.29708.408.44 (0.375-16)9.25329.49208.34908.46077.54387/16-140.42580.43610.38500.38970.34859.839.87 (0.4375-14)10.815311.07699.77909.89848.85191/2-130.48760.49850.44350.44850.404111.3411.38 (0.50-13)12.385012.661911.264911.391910.26419/16-120.54950.56090.50160.50680.458712.8012.84 (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"-80.98300.99800.91000.91680.844623.2223.27 (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。
美制管螺纹尺寸表[美制螺纹标准对照表]
美制管螺纹尺寸表[美制螺纹标准对照表]美制螺纹标准对照表每英寸牙数 8-32 (0.164-32) 10-24 (0.190-24) 12-24 (0.216-24) 1/4-20 (0.250-20) 5/16-18 (0.3175-18) 3/8-16 (0.375-16)7/16-14 (0.4375-14) 1/2-13 (0.50-13) 9/16-12 (0.5625-12) 5/8-11 (0.625-11) 3/4-10 (0.750-10) 7/8-9 (0.875-9) 1"-8 (1.000-8)UNC美制外螺纹(2A)常用规格极限尺寸附注(粗牙)大径极限最小 0.1571 3.9903 0.1818 4.6177 0.2078 5.2781 0.2408 6.1163 0.3026 7.6860 0.3643 9.2532 0.4258 10.81530.4876 12.3850 0.5495 13.9573 0.6113 15.5270 0.7353 18.6766 0.8592 21.8237 0.9830 24.9682最大 0.1631 4.1427 0.1890 4.8006 0.2150 5.4610 0.24896.3221 0.31137.9070 0.3737 9.4920 0.4361 11.0769 0.498512.6619 0.5609 14.2469 0.6234 15.8344 0.7482 19.0043 0.8731 22.1767 0.9980 25.3492中径极限最小 0.1399 3.5535 0.1586 4.0284 0.1845 4.6863 0.2127 5.4026 0.2712 6.8885 0.3287 8.3490 0.3850 9.77900.4435 11.2649 0.5016 12.7406 0.5589 14.1961 0.6773 17.2034 0.7946 20.1828 0.9100 23.1140最大 0.1428 3.6271 0.1619 4.1123 0.1879 4.7727 0.21645.4966 0.27526.9901 0.3331 8.4607 0.3897 9.8984 0.448511.3919 0.5068 12.8727 0.5644 14.3358 0.6832 17.3533 0.8009 20.3429 0.9168 23.2867代号小径max0.1248 3.1699 0.1379 3.5027 0.1639 4.1631 0.1876 4.7650 0.2431 6.1747 0.2970 7.5438 0.3485 8.8519 0.4041 10.26410.4587 11.6510 0.5119 13.0023 0.6255 15.8877 0.7368 18.7147 0.8446 21.4528最小 3.58 4.07 4.72 5.45 6.94 8.40 9.83 11.34 12.80 14.27 17.28 20.27 23.22螺胚直径最大 3.61 4.10 4.75 5.48 6.98 8.44 9.87 11.38 12.84 14.32 17.33 20.32 23.27公称尺寸和螺纹系列1.螺胚直径指滚丝前的尺寸,数值为依历练公式计算而得,在实践中需验证。
美制螺纹标准对照表
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
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
8.75
8.78
(0.375-24)
9.3142
9.4971
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)7.6867.9076.8885 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
5/8-18
3/4-16
7/8-14
1"-12
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
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)
公称尺寸和每英寸牙数
螺纹系列代号
小径极限
中径极限
大径min
底孔直径
最小
最大
最小
最大
最小
最大
8-36
UNF
10-32
12-28
1/4-28
5/16-24
3/8-24
7/16-20
1/2-20
美制内螺纹(2B)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
小径极限
中径极限
大径min
底孔直径
最小
最大
最小
最大
最小
最大
8-32
UNC
/16-18
3/8-16
7/16-14
1/2-13
9/16-12
5/8-11
3/4-10
7/8-9
1"-8
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。
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,下行为毫米)
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
美制螺纹标准尺寸对照表【免费下载】
如下是美制螺纹标准详细的对照表: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 0.1571 0.1631 0.1399 0.1428 0.12483.58 3.61(0.164-32) 3.9903 4.1427 3.5535 3.6271 3.169910-24 0.1818 0.189 0.1586 0.1619 0.13794.07 4.1 (0.190-24) 4.6177 4.8006 4.0284 4.1123 3.502712-24 0.2078 0.215 0.1845 0.1879 0.16394.72 4.75 (0.216-24)5.2781 5.461 4.6863 4.7727 4.16311/4-20 0.2408 0.2489 0.2127 0.2164 0.18765.45 5.48 (0.250-20)6.1163 6.3221 5.4026 5.4966 4.7655/16-18 0.3026 0.3113 0.2712 0.2752 0.24316.94 6.98 (0.3175-18)7.686 7.907 6.8885 6.9901 6.17473/8-16 0.3643 0.3737 0.3287 0.3331 0.2978.4 8.44 (0.375-16) 9.2532 9.492 8.349 8.4607 7.54387/16-14 0.4258 0.4361 0.385 0.3897 0.34859.83 9.87 (0.4375-14) 10.8153 11.0769 9.779 9.8984 8.85191/2-13 0.4876 0.4985 0.4435 0.4485 0.4041 11.34 11.38(0.50-13) 12.385 12.6619 11.2649 11.3919 10.26419/16-12 0.5495 0.5609 0.5016 0.5068 0.458712.8 12.84 (0.5625-12) 13.9573 14.2469 12.7406 12.8727 11.6515/8-11 0.6113 0.6234 0.5589 0.5644 0.511914.27 14.32 (0.625-11) 15.527 15.8344 14.1961 14.3358 13.00233/4-10 0.7353 0.7482 0.6773 0.6832 0.625517.28 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 0.736820.27 20.32 (0.875-9) 21.8237 22.1767 20.1828 20.3429 18.71471"-8 0.983 0.998 0.91 0.9168 0.844623.22 23.27 (1.000-8) 24.9682 25.3492 23.114 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。
美制螺纹尺寸表(mm)
美制螺纹尺寸表(mm)美制螺纹尺寸表(mm)1. 引言螺纹是机械连接中常见的连接形式,具有良好的承力性能和可重复使用性。
在制造过程中,精确的螺纹尺寸是非常重要的,以确保螺纹零件的互换性和相互配合性。
本文将介绍美制螺纹尺寸表(mm)中常见的螺纹类型及其规格。
2. UNC螺纹尺寸表(mm)UNC(Unified Coarse Thread)螺纹是一种粗牙螺纹,常用于一般机械制造和装配。
以下是UNC螺纹常见尺寸表(mm)的部分内容:- 1/4-20:意味着螺纹直径为1/4英寸,每英寸有20条螺纹- 5/16-18:意味着螺纹直径为5/16英寸,每英寸有18条螺纹- 3/8-16:意味着螺纹直径为3/8英寸,每英寸有16条螺纹UNC螺纹尺寸表中还包括更多的螺纹规格,根据具体的需求可以进行选择。
3. UNF螺纹尺寸表(mm)UNF(Unified Fine Thread)螺纹是一种细牙螺纹,常用于对连接强度和紧固力有较高要求的场合。
以下是UNF螺纹常见尺寸表(mm)的部分内容:- 1/4-28:意味着螺纹直径为1/4英寸,每英寸有28条螺纹- 5/16-24:意味着螺纹直径为5/16英寸,每英寸有24条螺纹- 3/8-24:意味着螺纹直径为3/8英寸,每英寸有24条螺纹UNF螺纹尺寸表中也有其他规格的螺纹,可根据具体需求选用。
4. UNEF螺纹尺寸表(mm)UNEF(Unified Extra Fine Thread)螺纹是一种超细牙螺纹,常用于对紧固性能要求极高的场合。
以下是UNEF螺纹常见尺寸表(mm)的部分内容:- 1/4-32:意味着螺纹直径为1/4英寸,每英寸有32条螺纹- 5/16-36:意味着螺纹直径为5/16英寸,每英寸有36条螺纹- 3/8-40:意味着螺纹直径为3/8英寸,每英寸有40条螺纹UNE F螺纹尺寸表可供选择的规格较少,但在某些特殊应用场合中仍然发挥着重要作用。
5. 总结美制螺纹尺寸表(mm)是机械制造中常用的螺纹连接标准。
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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 0.1571 0.1631 0.1399 0.1428 0.12483.58 3.61(0.164-32) 3.9903 4.1427 3.5535 3.6271 3.169910-24 0.1818 0.1890 0.1586 0.1619 0.13794.07 4.10 (0.190-24) 4.6177 4.8006 4.0284 4.1123 3.502712-24 0.2078 0.2150 0.1845 0.1879 0.16394.72 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 0.18765.45 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 0.24316.94 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 0.29708.40 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 0.34859.83 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 0.404111.34 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 0.458712.80 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 0.511914.27 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 0.625517.28 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 0.736820.27 20.32 (0.875-9) 21.8237 22.1767 20.1828 20.3429 18.71471"-8 0.9830 0.9980 0.9100 0.9168 0.844623.22 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。
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)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8-36UNF 0.1577 0.1632 0.1424 0.1452 0.12913.65 3.67(0.164-36) 4.0056 4.1453 3.6170 3.6881 3.279110-32 0.1831 0.1891 0.1658 0.1688 0.15084.24 4.27 (0.190-32) 4.6507 4.8031 4.2113 4.2875 3.830312-28 0.2085 0.2150 0.1886 0.1918 0.17124.82 4.85 (0.216-28)5.2959 5.4610 4.7904 4.8717 4.34851/4-28 0.2425 0.2490 0.2225 0.2258 0.20525.69 5.71 (0.250-28)6.1595 6.3246 5.6515 5.7353 5.21215/16-24 0.3042 0.3114 0.2806 0.2843 0.26037.17 7.20 (0.3175-24) 7.7267 7.9096 7.1272 7.2212 6.61163/8-24 0.3667 0.3739 0.3430 0.3468 0.32288.75 8.78 (0.375-24) 9.3142 9.4971 8.7122 8.8087 8.19917/16-20 0.4281 0.4362 0.3995 0.4037 0.374910.19 10.23 (0.4375-20) 10.8737 11.0795 10.1473 10.2540 9.52251/2-20 0.4906 0.4987 0.4619 0.4662 0.437411.78 11.82 (0.50-20) 12.4612 12.6670 11.7323 11.8415 11.11009/16-18 0.5524 0.5611 0.5205 0.5250 0.492913.27 13.31 (0.5625-18) 14.0310 14.2519 13.2207 13.3350 12.51975/8-18 0.6149 0.6236 0.5828 0.5875 0.555414.85 14.89 (0.625-18) 15.6185 15.8394 14.8031 14.9225 14.10723/4-16 0.7391 0.7485 0.7029 0.7079 0.671817.91 17.95 (0.750-16) 18.7731 19.0119 17.8537 17.9807 17.06377/8-14 0.8631 0.8734 0.8216 0.8270 0.785820.93 20.97 (0.875-14) 21.9227 22.1844 20.8686 21.0058 19.95931"-12 0.9868 0.9982 0.9382 0.9441 0.896023.90 23.95 (1.000-12) 25.0647 25.3543 23.8303 23.9801 22.75841.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)公称尺寸和每英寸牙数螺纹系列代号小径极限中径极限大径min底孔直径最小最大最小最大最小最大8-32UNC 0.1300 0.1390 0.1437 0.1475 0.16403.40 3.50(0.164-32) 3.3020 3.5306 3.6500 3.7465 4.165610-24 0.1450 0.1560 0.1629 0.1672 0.19003.75 3.90 (0.190-24) 3.6830 3.96244.1377 4.2469 4.826012-24 0.1710 0.1810 0.1889 0.1933 0.21604.40 4.55 (0.216-24) 4.3434 4.5974 4.7981 4.90985.48641/4-20 0.1960 0.2070 0.2175 0.2224 0.25005.05 5.20 (0.250-20) 4.9784 5.2578 5.5245 5.64906.35005/16-18 0.2520 0.2650 0.2764 0.2817 0.31256.45 6.60 (0.3175-18) 6.4008 6.73107.0206 7.1552 7.93753/8-16 0.3070 0.3210 0.3344 0.3401 0.37507.85 8.00 (0.375-16) 7.7978 8.1534 8.4938 8.6385 9.52507/16-14 0.3600 0.3760 0.3911 0.3972 0.43759.20 9.40 (0.4375-14) 9.1440 9.5504 9.9339 10.0889 11.11251/2-13 0.4170 0.4340 0.4500 0.4565 0.500010.65 10.90 (0.50-13) 10.5918 11.0236 11.4300 11.5951 12.70009/16-12 0.4720 0.4900 0.5084 0.5152 0.562512.05 12.30 (0.5625-12) 11.9888 12.4460 12.9134 13.0861 14.28755/8-11 0.5270 0.5460 0.5660 0.5732 0.625013.45 13.70 (0.625-11) 13.3858 13.8684 14.3764 14.5593 15.87503/4-10 0.6420 0.6630 0.6850 0.6927 0.750016.40 16.70 (0.750-10) 16.3068 16.8402 17.3990 17.5946 19.05007/8-9 0.7550 0.7780 0.8028 0.8110 0.875019.30 19.60 (0.875-9) 19.1770 19.7612 20.3911 20.5994 22.22501"-8 0.8650 0.8900 0.9188 0.9276 1.000022.10 22.40 (1.000-8) 21.9710 22.6060 23.3375 23.5610 25.40001.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)公称尺寸和每英寸牙数螺纹系列代号小径极限中径极限大径min底孔直径最小最大最小最大最小最大8-36UNF 0.1340 0.1420 0.1460 0.1496 0.16403.45 3.67(0.164-36) 3.4036 3.6068 3.7084 3.7998 4.165610-32 0.1560 0.1640 0.1697 0.1736 0.19004.00 4.27 (0.190-32) 3.9624 4.1656 4.3104 4.4094 4.826012-28 0.1770 0.1860 0.1928 0.1970 0.21604.55 4.85 (0.216-28) 4.4958 4.7244 4.89715.0038 5.48641/4-28 0.2110 0.2200 0.2268 0.2311 0.25005.40 5.71 (0.250-28) 5.3594 5.5880 5.7607 5.86996.35005/16-24 0.2670 0.2770 0.2854 0.2902 0.31256.857.20 (0.3175-24) 6.7818 7.0358 7.2492 7.3711 7.93753/8-24 0.3300 0.3400 0.3479 0.3528 0.37508.45 8.78 (0.375-24) 8.3820 8.6360 8.8367 8.9611 9.52507/16-20 0.3830 0.3950 0.4050 0.4104 0.43759.85 10.23 (0.4375-20) 9.7282 10.0330 10.2870 10.4242 11.11251/2-20 0.4460 0.4570 0.4675 0.4731 0.500011.40 11.82 (0.50-20) 11.3284 11.6078 11.8745 12.0167 12.70009/16-18 0.5020 0.5150 0.5264 0.5323 0.562512.85 13.31 (0.5625-18) 12.7508 13.0810 13.3706 13.5204 14.28755/8-18 0.5650 0.5780 0.5889 0.5949 0.625014.45 14.89 (0.625-18) 14.3510 14.6812 14.9581 15.1105 15.87503/4-16 0.6820 0.6960 0.7094 0.7159 0.750017.40 17.95 (0.750-16) 17.3228 17.6784 18.0188 18.1839 19.05007/8-14 0.7980 0.8140 0.8286 0.8356 0.875020.35 20.97 (0.875-14) 20.2692 20.6756 21.0464 21.2242 22.22501"-12 0.9100 0.9280 0.9459 0.9535 1.000023.90 23.95 (1.000-12) 23.1140 23.5712 24.0259 24.2189 25.40001.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。