


Key Advantages:
✓ High Torque Capacity - Reduced risk of stripping
✓ Flush Mount Design - Saves space in tight assemblies
✓ Wide Material Grades - From economical carbon steel to aerospace-grade alloy steel
✓ Rust Protection - Meets ASTM B117 salt spray requirements
✓ Interchangeability - Fully compliant with DIN 912 & ISO 4762 standards
Our factory mainly produces various types of fasteners, with normal delivery time of 20-25 days and urgent delivery time of 7-15 days. It is 35 kilometers away from Ningbo Port and very convenient for export. Spot goods can be delivered to the warehouse on the same day!
We manufacture premium DIN 912 / ISO 4762 Hex Socket Head Cap Screws (Allen Bolts) for critical industrial applications. Produced from Grade 8.8, 10.9, or 12.9 alloy steel or A2/A4-70/A4-80 stainless steel, our screws undergo rigorous heat treatment and quality control to ensure exact dimensional accuracy, superior tensile strength, and reliable torque transmission.
PARAMETERS |
Item |
Hexagon socket bolts |
Spec |
M4-M12 |
Material |
Stainless Steel, carbon steel,copper |
Grade |
4.8, 8.8, 10.9, 12.9 |
Standard |
GB, DIN, UNS,JIS |
Surface Finish |
Natural, Black, White-plated zinc, Color zinc, Nickel, Dacromet, Polished, Zinc-nickel alloy, Hot-dip galvanized, etc. |
Delivery Time |
7-20Days |
Package |
cartonboxes or PE bag |





