美制英制公制螺丝

螺纹规格-美制、英制、公制

美制细牙UNF

2A外螺纹大径UNFUN

2B内螺纹小径（UN、UNF）序号规格型号最大最小公差最小最大公差17/16"-2011.07910.8740.2069.72810.0330.30521/2"-2012.66712.4610.20611.32811.6080.27939/16"-1814.25214.0310.22112.75113.0810.33043/4"-1619.01218.7730.23917.32317.6780.35657/8"-1422.18421.9230.26220.26920.6760.406611/16-1226.94426.6550.29024.68925.1460.457715/16-1233.29433.0050.29031.03931.4960.457815/8-1241.22940.9400.29038.98939.4460.457917/8-1247.57947.2900.29045.33945.7960.4571021/2-1263.45263.1620.29061.21461.6710.457公制细牙6g外螺纹大径6H内螺纹小径1M10*19.9749.7940.1808.9179.1570.2402M12*1.511.96811.7320.23610.37610.6760.3003M14*1.513.96813.7320.23612.37612.6760.3004M16*1.515.96815.7320.23614.37614.6760.3005M18*1.517.96817.7320.23616.37616.6760.3006M20*1.519.96819.7320.23618.37618.6760.3007M22*1.521.96821.7320.23620.37620.6760.3008M24*1.523.96823.7320.23622.37622.6760.3009M26*1.525.96825.7320.23624.37624.6760.30010M27*1.526.96826.7320.23625.37625.6760.30011M30*1.529.96829.7320.23628.37628.6760.30012M27*226.96226.6820.28024.83525.2100.37513M30*229.96229.6820.28027.83528.2100.37514M33*232.96232.6820.28030.83531.2100.37515M36*235.96235.6820.28033.83534.2100.37516M42*241.96241.6820.28039.83540.2100.375英制管螺纹1G1/8-289.7289.5140.2148.5668.8480.2822G1/4-1913.15712.9070.25011.44511.8900.4453G3/8-1916.66216.4120.25014.95015.3950.4454G1/2-1420.95520.6710.28418.63119.1720.5415G3/4-1426.44126.1570.28424.11724.6580.5416G1-1133.24932.8890.36030.29130.9310.6407G11/4-1141.91041.5500.36038.95239.5920.6408G11/2-1147.80347.4430.36044.84545.4850.640公制/美制/英制螺纹对照表给大家分享一下A型美制螺纹（UNF）常用规格

外螺纹

内螺纹-4

9/16"-19牙

14.28

13.08-6

11/16''-16

17.46

16.1-8

13/16''-16

20.64

19.28-10

1''-14

25.40

23.57-12

1(3/16)''-12

30.00

28.32-16

1(7/16)''-12

36.51

34.67-20

1(11/16)''-12

42.86

41.02C型JIC37度美制UNF螺纹常用规格-4

7/16”-20

11.11

10.03-5

1/2”-20

12.70

11.32-6

9/16”-18

14.28

13.08-8

3/4”-16

19.00

17.68-10

7/8”-14

22.22

20.68-12

1(1/16)"-12

26.98

25.15-16

1(5/16)"-12

33.33

31.5-20

1(5/8)"-12

41.28

39.44-24

1(7/8)"-12

47.62

45.8-32

2(1/2)"-12

63.5

61.67英制圆柱管螺纹（BSPP）常用规格-4

1/4”-19

13.157

11.55-6

3/8”-19

16.662

14.95-8

1/2”-14

20.955

18.63-12

3/4”-14

26.441

24.11-16

1”-11

33.249

30.29-20

1(1/4)''-11

41.91

38.95英制圆锥管螺纹（BSPT）常用规格

基面大径

基准距离

1/4”-19

13.157

6

3/8”-19

16.662

6.4

1/2”-14

20.955

8.2

3/4”-14

26.441

9.5

1”-11

33.249

10.4

1(1/4)''-11

41.91

12.7

美制圆锥管螺纹（NPT）

1/8”-27

10.24

4

1/4”-18

13.60

4

3/8”-18

17.04

4.32

1/2”-14

21.22

4.48

3/4”-14

26.57

4.75

1”-11(1/2)”

33.22

4.6

1(1/4)”-11.5

41.96

4.83英、美制标准螺纹直径、螺距参照系列表标准国别美制ANSIBI.1-1982英国标准BS84-1956规格直径UNC牙数/寸UNF牙数/寸BSW牙数/寸BSF牙数/寸0#1.52/80//1#1.856472//2#2.185664//3#2.514856//4#2.844048//5#,(1/8”)3.18404440/6#3.513240//8#4.173236//10#(3/16”)4.832432243212#(7/32”)5.492428/281/4”6.35202820265/16”7.94182418223/8”9.53162016207/16”11.11142014181/2”12.7131812169/16”14.29121812165/8”15.8811/111411/16”17.46/1611143/4”19.0510/101213/16”20.64/14//7/8”22.239/91115/16”23.81/12//1”25.481281011/8”28.587127911/4”31.757127913/8”34.93612/811/2"38.1612681