公称 |
0# |
1# |
2# |
3# |
4# |
5# |
6# |
8# |
10#&12# |
1/4 |
5/16 |
直径 |
公称 |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
长度 |
0.75 |
0.25 |
0.19 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
0.88 |
0.25 |
0.19 |
0.25 |
0.17 |
0.25 |
0.16 |
0.25 |
0.15 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
1 |
0.5 |
0.44 |
0.25 |
0.17 |
0.25 |
0.16 |
0.25 |
0.15 |
0.25 |
0.12 |
0.25 |
0.12 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
1.25 |
0.75 |
0.69 |
0.62 |
0.55 |
0.62 |
0.54 |
0.62 |
0.52 |
0.25 |
0.12 |
0.25 |
0.12 |
0.5 |
0.34 |
0.38 |
0.22 |
0.38 |
0.17 |
– |
– |
– |
– |
1.5 |
|
|
0.88 |
0.8 |
0.88 |
0.79 |
0.88 |
0.77 |
0.75 |
0.62 |
0.75 |
0.62 |
0.5 |
0.34 |
0.38 |
0.22 |
0.38 |
0.17 |
0.5 |
0.25 |
– |
– |
1.75 |
|
|
|
|
1.12 |
1.04 |
1.12 |
1.02 |
0.75 |
0.62 |
0.75 |
0.62 |
1 |
0.84 |
0.88 |
0.72 |
0.88 |
0.67 |
0.5 |
0.25 |
0.62 |
0.35 |
2 |
|
|
|
|
|
|
1.38 |
1.27 |
1.25 |
1.12 |
1.25 |
1.12 |
1 |
0.84 |
0.88 |
0.72 |
0.88 |
0.67 |
1 |
0.75 |
0.62 |
0.35 |
2.25 |
|
|
|
|
|
|
|
|
1.25 |
1.12 |
1.25 |
1.12 |
1.5 |
1.34 |
1.38 |
1.22 |
1.38 |
1.17 |
1 |
0.75 |
1.12 |
0.85 |
2.5 |
|
|
|
|
|
|
|
|
|
|
1.75 |
1.62 |
1.5 |
1.34 |
1.38 |
1.22 |
1.38 |
1.17 |
1.5 |
1.25 |
1.12 |
0.85 |
2.75 |
|
|
|
|
|
|
|
|
|
|
|
|
2 |
1.84 |
1.88 |
1.72 |
1.88 |
1.67 |
1.5 |
1.25 |
1.62 |
1.35 |
3 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1.88 |
1.72 |
1.88 |
1.67 |
2 |
1.75 |
1.62 |
1.35 |
3.25 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.38 |
2.22 |
2.38 |
2.17 |
2 |
1.75 |
2.12 |
1.85 |
3.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.38 |
2.17 |
2.5 |
2.25 |
2.12 |
1.85 |
3.75 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.88 |
2.67 |
2.5 |
2.25 |
2.62 |
2.35 |
4 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2.88 |
2.67 |
3 |
2.75 |
2.62 |
2.35 |
4.25 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3 |
2.75 |
3.12 |
2.85 |
4.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5 |
3.25 |
3.12 |
2.85 |
4.75 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3.5 |
3.25 |
3.62 |
3.35 |
5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4 |
3.75 |
3.62 |
3.35 |
5.25 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.12 |
3.85 |
5.5 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.12 |
3.85 |
5.75 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.62 |
4.35 |
6 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
4.62 |
4.35 |
6.25 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5.12 |
4.85 |
|
公称 |
3/8 |
7/16 |
1/2&9/16 |
5/8 |
3/4 |
7/8 |
1 |
1–1/8 |
1–1/4 |
1–3/8 |
1–1/2 |
直径 |
公称 |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
LG |
LB |
长度 |
1.75 |
0.5 |
0.19 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
|
|
|
|
|
|
|
|
2 |
0.5 |
0.19 |
0.62 |
0.27 |
– |
– |
– |
– |
– |
– |
– |
– |
– |
– |
|
|
|
|
|
|
|
|
2.25 |
1 |
0.69 |
0.62 |
0.27 |
0.75 |
0.36 |
– |
– |
– |
– |
– |
– |
– |
– |
|
|
|
|
|
|
|
|
2.5 |
1 |
0.69 |
1.12 |
0.77 |
0.75 |
0.36 |
0.75 |
0.3 |
– |
– |
– |
– |
– |
– |
|
|
|
|
|
|
|
|
2.75 |
1.5 |
1.19 |
1.12 |
0.77 |
0.75 |
0.36 |
0.75 |
0.3 |
– |
– |
– |
– |
– |
– |
|
|
|
|
|
|
|
|
3 |
1.5 |
1.19 |
1.62 |
1.27 |
1.5 |
1.12 |
0.75 |
0.3 |
1 |
0.5 |
– |
– |
– |
– |
|
|
|
|
|
|
|
|
3.25 |
2 |
1.69 |
1.62 |
1.27 |
1.5 |
1.12 |
1.5 |
1.04 |
1 |
0.5 |
1 |
0.44 |
– |
– |
|
|
|
|
|
|
|
|
3.5 |
2 |
1.69 |
2.12 |
1.77 |
1.5 |
1.12 |
1.5 |
1.04 |
1 |
0.5 |
1 |
0.44 |
1 |
0.38 |
|
|
|
|
|
|
|
|
3.75 |
2.5 |
2.19 |
2.12 |
1.77 |
2.25 |
1.86 |
1.5 |
1.04 |
1 |
0.5 |
1 |
0.44 |
1 |
0.38 |
|
|
|
|
|
|
|
|
4 |
2.5 |
2.19 |
2.22 |
2.27 |
2.25 |
1.86 |
2.25 |
1.8 |
2 |
1.5 |
1 |
0.44 |
1 |
0.38 |
|
|
|
|
|
|
|
|
4.25 |
3 |
2.69 |
2.62 |
2.27 |
2.25 |
1.86 |
2.25 |
1.8 |
2 |
1.5 |
2 |
1.44 |
1 |
0.38 |
|
|
|
|
|
|
|
|
4.5 |
3 |
2.69 |
3.12 |
2.77 |
3 |
2.62 |
2.25 |
1.8 |
2 |
1.5 |
2 |
1.44 |
2 |
1.38 |
|
|
|
|
|
|
|
|
4.75 |
3.5 |
3.19 |
3.12 |
2.77 |
3 |
2.62 |
3 |
2.54 |
2 |
1.5 |
2 |
1.44 |
2 |
1.38 |
1.94 |
0.1 |
|
|
|
|
|
|
5 |
3.5 |
3.19 |
3.62 |
3.27 |
3 |
2.62 |
3 |
2.54 |
3 |
2.5 |
2 |
1.44 |
2 |
1.38 |
2.19 |
0.35 |
|
|
|
|
|
|
5.25 |
4 |
3.69 |
3.62 |
3.27 |
3.75 |
3.36 |
3 |
2.54 |
3 |
2.5 |
3 |
2.44 |
2 |
1.38 |
2.44 |
0.6 |
2.13 |
0.16 |
|
|
|
|
5.5 |
4 |
3.69 |
4.12 |
3.77 |
3.75 |
3.36 |
3.75 |
3.3 |
3 |
2.5 |
3 |
2.44 |
3 |
2.38 |
2.69 |
0.85 |
2.38 |
0.41 |
|
|
|
|
5.75 |
4.5 |
4.19 |
4.12 |
3.77 |
3.75 |
3.36 |
3.75 |
3.3 |
3 |
2.5 |
3 |
2.44 |
3 |
2.38 |
2.94 |
1.1 |
2.63 |
0.66 |
2.31 |
0.1 |
|
|
6 |
4.5 |
4.19 |
4.62 |
4.27 |
4.5 |
4.12 |
3.75 |
3.3 |
4 |
3.5 |
3 |
2.44 |
3 |
2.38 |
3.19 |
1.35 |
2.88 |
0.91 |
2.56 |
0.35 |
|
|
6.25 |
5 |
4.69 |
4.62 |
4.27 |
4.5 |
4.12 |
4.5 |
4.04 |
4 |
3.5 |
4 |
3.44 |
3 |
2.38 |
3.44 |
1.6 |
3.13 |
1.16 |
2.81 |
0.6 |
2.5 |
0.17 |
6.5 |
5 |
4.69 |
5.12 |
4.77 |
4.5 |
4.12 |
4.5 |
4.04 |
4 |
3.5 |
4 |
3.44 |
4 |
3.38 |
3.69 |
1.85 |
3.38 |
1.41 |
3.06 |
0.85 |
2.75 |
0.42 |
6.75 |
5.5 |
5.19 |
5.12 |
4.77 |
5.25 |
4.86 |
4.5 |
4.04 |
4 |
3.5 |
4 |
3.44 |
4 |
3.38 |
3.94 |
2.1 |
3.63 |
1.66 |
3.31 |
1.1 |
3 |
0.67 |
7 |
5.5 |
5.19 |
5.62 |
5.27 |
5.25 |
4.86 |
5.25 |
4.8 |
5 |
4.5 |
4 |
3.44 |
4 |
3.38 |
4.19 |
2.35 |
3.88 |
1.91 |
3.56 |
1.35 |
3.25 |
0.92 |
7.25 |
6 |
5.69 |
5.62 |
5.27 |
5.25 |
4.86 |
5.25 |
4.8 |
5 |
4.5 |
5 |
4.44 |
4 |
3.38 |
4.44 |
2.6 |
4.13 |
2.16 |
3.81 |
1.6 |
3.5 |
1.17 |
7.5 |
6 |
5.69 |
6.12 |
5.77 |
6 |
5.62 |
5.25 |
4.8 |
5 |
4.5 |
5 |
4.44 |
5 |
4.38 |
4.69 |
2.85 |
4.38 |
2.41 |
4.06 |
1.85 |
3.75 |
1.42 |
7.75 |
|
|
6.12 |
5.77 |
6 |
5.62 |
6 |
5.54 |
5 |
4.5 |
5 |
4.44 |
5 |
4.38 |
4.94 |
3.1 |
4.63 |
2.66 |
4.31 |
2.1 |
4 |
1.67 |
8 |
|
|
6.62 |
6.27 |
6 |
5.62 |
6.3 |
5.54 |
6 |
5.5 |
5 |
4.44 |
5 |
4.38 |
5.19 |
3.35 |
4.88 |
2.91 |
4.56 |
2.35 |
4.25 |
1.92 |
8.5 |
|
|
7.12 |
6.77 |
7 |
6.62 |
6.75 |
6.3 |
6 |
5.5 |
6 |
5.44 |
6 |
5.38 |
5.69 |
3.85 |
5.35 |
3.41 |
5.06 |
2.85 |
4.75 |
2.42 |
9 |
|
|
7.62 |
7.27 |
7 |
6.62 |
6.75 |
6.3 |
7 |
6.5 |
6 |
5.44 |
6 |
5.38 |
6.19 |
4.35 |
5.88 |
3.91 |
5.56 |
3.35 |
5.25 |
2.92 |
9.5 |
|
|
|
|
8 |
7.62 |
7.75 |
7.3 |
7 |
6.5 |
7 |
6.44 |
7 |
6.38 |
9.69 |
4.85 |
6.35 |
4.41 |
6.06 |
3.85 |
5.75 |
3.42 |
10 |
|
|
|
|
8 |
7.62 |
7.75 |
7.3 |
8 |
7.5 |
7 |
6.44 |
7 |
6.38 |
7.19 |
5.35 |
6.88 |
4.91 |
6.56 |
4.35 |
6.25 |
3.92 |
11 |
|
|
|
|
|
|
9.25 |
8.8 |
9 |
8.5 |
8 |
7.44 |
8 |
7.38 |
8.19 |
6.35 |
7.88 |
5.91 |
7.56 |
5.35 |
7.25 |
4.92 |
12 |
|
|
|
|
|
|
10.25 |
9.8 |
10 |
9.5 |
9 |
8.44 |
9 |
8.38 |
9.19 |
7.35 |
8.88 |
6.91 |
8.56 |
6.35 |
8.25 |
5.92 |
13 |
|
|
|
|
|
|
|
|
11 |
10.5 |
10 |
9.44 |
10 |
9.38 |
10.19 |
8.35 |
9.88 |
7.91 |
9.56 |
7.35 |
9.25 |
6.92 |
14 |
|
|
|
|
|
|
|
|
12 |
11.5 |
11 |
10.44 |
11 |
10.38 |
11.19 |
9.35 |
10.88 |
8.91 |
10.56 |
8.35 |
10.25 |
7.92 |
15 |
|
|
|
|
|
|
|
|
13 |
12.5 |
12 |
11.44 |
12 |
11.38 |
12.19 |
10.35 |
11.88 |
9.91 |
11.56 |
9.35 |
11.25 |
8.92 |
16 |
|
|
|
|
|
|
|
|
|
|
13 |
12.44 |
13 |
12.38 |
13.19 |
11.35 |
12.88 |
10.91 |
12.56 |
10.35 |
12.25 |
9.92 |
17 |
|
|
|
|
|
|
|
|
|
|
14 |
13.44 |
14 |
13.38 |
14.19 |
12.35 |
13.88 |
11.91 |
13.56 |
11.35 |
13.25 |
10.92 |
18 |
|
|
|
|
|
|
|
|
|
|
15 |
14.44 |
15 |
14.38 |
15.19 |
13.35 |
14.88 |
12.91 |
14.56 |
12.35 |
14.25 |
11.92 |
19 |
|
|
|
|
|
|
|
|
|
|
|
|
16 |
15.38 |
16.19 |
14.35 |
15.88 |
13.91 |
15.56 |
13.35 |
15.25 |
12.92 |
20 |
|
|
|
|
|
|
|
|
|
|
|
|
17 |
16.38 |
17.19 |
15.35 |
16.88 |
14.91 |
16.56 |
14.35 |
16.25 |
13.92 |
1. 表中LG为最大值,表示螺钉的最小设计夹紧长度。测量时将一个无螺纹内倒角或无沉孔的通端螺纹环规,用手尽力拧入螺纹,直到拧不动为止,此时测得的从头部支承面到螺纹环规端面之间的距离即为LG。表中LB为最小值,表达的是螺钉的最小无螺纹杆部长度。对于每一个长度规格,无螺纹杆部长度等于LG减去5倍的螺纹螺距(UNRC系列)。 |
2. 对于公称长度位于表左侧两档公称长度之间的规格,其LG、LB按表中相邻公称长度中较短一档的LG和LB。例如:公称直径1/4 in,公称长度1.88 in的螺钉,LG为0.50 in,LB为0.25 in。 |
3. 表中“-”公称长度的螺钉,为全螺纹(满扣)产品。检查时用一个无螺纹内倒角或无沉孔的通端螺纹环规,用手尽力拧入螺纹。对于公称直径从0#(0.0060 in)至5/8 in(包括5/8 in)的螺钉,其螺纹肩距最大不超过2倍螺距;对于公称直径大于1 in和长度小于最小螺纹长度LT加5倍螺距(UNRC系列)的螺钉,应为全螺纹(满扣)产品。其肩距可根据实际情况,但也应尽可能小。 |
4. 对于公称长度大于本表中,已规定LG和LB值所对应长度尺寸的螺钉和公称直径大于1 in的螺钉,其最大夹紧长度LG和最小无螺纹杆长LB,见表2。 |
LG=L-LT |
LB-L-LTT |