美制粗牙 UNC Machine Screw 2A (60°)              (mm)
规格
牙数
外径(2A)
中径(2A)
材料径(2A)
基准
最大
最小
基准
最大
最小
最大
最小
1
64
1.854
1.839
1.742
1.598
1.582
1.532
1.571
1.546
2
56
2.184
2.169
2.065
1.890
1.875
1.821
1.864
1.837
3
48
2.515
2.497
2.383
2.172
2.154
2.096
2.144
2.114
4
40
2.845
2.824
2.695
2.433
2.413
2.350
2.405
2.373
5
40
3.175
3.155
3.025
2.764
2.743
2.677
2.732
2.699
6
32
3.505
3.485
3.332
2.990
2.969
2.898
2.964
2.928
8
32
4.166
4.143
3.990
3.650
3.627
3.553
3.617
3.580
10
24
4.826
4.801
4.618
4.138
4.112
4.028
4.109
4.067
12
24
5.486
5.461
5.278
4.798
4.773
4.686
4.765
4.722
1/4
20
6.350
6.322
6.116
5.525
5.497
5.403
5.493
5.446
5/16
18
7.938
7.907
7.686
7.021
6.990
6.888
6.984
6.933
3/8
16
9.525
9.492
9.253
8.494
8.461
8.349
8.453
8.397
7/16
14
11.113
11.077
10.815
9.934
9.898
9.779
9.893
9.833
1/2
13
12.700
12.662
12.385
11.430
11.392
11.265
11.385
11.321
9/16
12
14.288
14.247
13.957
12.913
12.873
12.741
12.866
12.800
5/8
11
15.875
15.834
15.527
14.376
14.336
14.196
14.330
14.260
3/4
10
19.050
19.004
18.677
17.399
17.353
17.203
17.345
17.270
7/8
9
22.225
22.177
21.824
20.391
20.343
20.183
20.335
20.255



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