|
美 制 粗 螺 纹
|
|
|
|
|
规格(UNC)
|
滚造径
|
|
|
NO.5-40
|
2.70 - 2.67
|
|
|
NO.6-32
|
2.95 - 2.91
|
|
|
NO.8-32
|
3.60 - 3.57
|
|
|
NO.10-24
|
4.09 - 4.05
|
|
|
NO.12-24
|
4.75 - 4.70
|
|
|
1/4 -20
|
5.50 - 5.45
|
|
|
5/16 -18
|
6.98 - 6.93
|
|
|
3/8 -16
|
8.45 - 8.40
|
|
|
7/16 -14
|
9.89 - 9.83
|
|
|
1/2 -13
|
11.39 - 11.32
|
|
|
9/16 -12
|
12.87 - 12.80
|
|
|
|
|
美 制 细 螺 纹
|
|
|
|
|
规格(UNF)
|
滚造径
|
|
|
NO.5-44
|
2.73 - 2.70
|
|
|
NO.6-40
|
3.05 - 3.02
|
|
|
NO.8-36
|
3.66 - 3.63
|
|
|
NO.10-32
|
4.26 - 4.80
|
|
|
NO.12-28
|
4.84 - 4.80
|
|
|
1/4 -28
|
5.72 - 5.68
|
|
|
5/16 -24
|
7.20 - 7.16
|
|
|
3/8 -24
|
8.79 - 8.74
|
|
|
7/16 -20
|
10.23 - 10.18
|
|
|
1/2 -20
|
11.82 - 11.76
|
|
|
