
Material Symbols HSS:○ HSS-Co:● HSS-P:◎
| Main size des | ignation and sp | ecification | |||
| ① metric | ② unified | ③ whitworth | ④ sewing screw | ⑤STI (metric) | ⑥STI (unified) |
| M12×1.75 M12×1.5 M12×1.25 M12×1 | |||||
| M13×1.75 M13×1.5 M13×1.25 M13×1 M13×0.75 | 1/2-13UNC 1/2-16UN 1/2-20UNF 1/2-28UNEF 1/2-32UN | W1/2-12 | STIM11×1.5 STIM11×1.25 | STI7/16-20UNF | |
| M13×0.5 | |||||
| M13×1.75 M13×1.5 M13×1.25 M13×1 | |||||
| M14×2 | |||||
| M14×1.5 M14×1.25 M14×1 | STIM12×1.5 STIM12×1.25 STIM12×1 | STI7/16-14UNC | |||
| M14×0.75 | |||||
| M14×0.5 | |||||
| M14×2 M14×1.5 M14×1.25 M14×1 | |||||
| M15×2 M15×1.5 M15×1.25 M15×1 | 9/16-12UNC 9/16-16UN 9/16-18UNF 9/16-20UN 9/16-24UNEF 9/16-28UN | W9/16-12 | STIM12×1.75 STIM13×1.5 | STI1/2-20UNF | |
| M15×0.75 | 9/16-32UN | ||||
| M15×0.5 | |||||
| M15×2 M15×1.5 M15×1.25 M15×1 | |||||
| M16×2 M16×1.5 M16×1.25 M16×1 | 5/8-11UNC 5/8-12UN 5/8-16UN 5/8-18UNF 5/8-20UN 5/8-24UNEF 5/8-28UN | W5/8-11 | STIM13×1.75 STIM14×1.5 STIM14×1.25 | STI1/2-13UNC | |
| M16×0.75 M16×0.5 | 5/8-32UN |