螺紋 |
長度 |
對邊的大小 |
形式 |
1/4-28" |
19mm |
7mm |
UNF |
5/16-24" |
21mm |
10mm |
UNF |
3/8-24" |
21mm |
11mm |
UNF |
7/16-20" |
25mm |
12mm |
UNF |
1/2-20" |
30mm |
14mm |
UNF |
9/16-18" |
34mm |
15mm |
UNF |
5/8-18" |
25mm |
17mm |
UNF |
5/16-18" |
21mm |
8mm |
UNC |
3/8-16" |
21mm |
10mm |
UNC |
1/8-27" |
23mm |
11mm |
SAE |
1/4-18" |
25mm |
14mm |
SAE |
黃油嘴美制螺紋直通/45度/90度