螺纹长度对边的大小形式1/4-28"19mm7mmUNF5/16-24"21mm10mmUNF3/8-24"21mm11mmUNF7/16-20"25mm12mmUNF1/2-20"30mm14mmUNF9/16-18"34mm15mmUNF5/8-18"25mm17mmUNF5/16-18"21mm8mmUNC3/8-1
螺纹 | 长度 | 对边的大小 | 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 |