


Mushroom head square neck carriage bolt per DIN 603. The smooth dome head and square shoulder provide a secure, tamper-resistant connection.
| Standard | DIN 603 / ISO 8677 |
| Size Range | M6-M20 |
| Grade | 4.8, 8.8 |
| Material | Carbon Steel |
| Head | Round / Mushroom |
| Neck | Square (anti-rotation) |
| Surface | HDG / Zinc-Nickel / Yellow Zinc |