| STANDARD | GRADE | FINISHING | RANGE M*L |
| Grade 4.6, 4.8 | Mild Steel | Inside Dia M5, M6, M8, M10, M12 | |
| A2 & A4 | Stainless Steel | M16, M18, M20 | |
| Plain | |||
| Zinc Plated |
| STANDARD | GRADE | FINISHING | RANGE M*L |
| Grade 4.6, 4.8 | Mild Steel | Inside Dia M5, M6, M8, M10, M12 | |
| A2 & A4 | Stainless Steel | M16, M18, M20 | |
| Plain | |||
| Zinc Plated |
