Hebei Kappa Metal Products Co., Ltd. is one of the most reliable manufacturers and suppliers of 316 Stainless Steel Socket Head Cap Screws DIN 912 A4-70 Hex Allen Bolts in China. Welcome to buy bulk high quality 316 Stainless Steel Socket Head Cap Screws DIN 912 A4-70 Hex Allen Bolts made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
316 Stainless Steel Socket Head Cap Screws – DIN 912 (ISO 4762)
The 316 stainless steel cylindrical head internal hex bolt is a high-performance precision fastener that adopts a cylindrical head combined with a deep hole internal hex (Allen) drive design. This design enables it to apply high torque in a limited space without damaging the drive hole. It is the preferred solution for mechanical equipment assembly, industrial equipment, and structural fastening applications, especially excelling in scenarios with limited installation space and extremely high reliability requirements.
Specifications
|
Item |
Allen bolt |
|
Standard |
DIN912/ISO4762 |
|
Material |
Stainless steel |
|
Finish/Surface treatment |
Plain |
|
Size |
M4-M8,M10, M12, M14, M16, M18, M20.... |
|
Thread |
UNC/UNF |
|
Thread pitch |
0.8mm/1.5mm/2mm |
|
Measuring |
Inch/Metric |
|
Trade terms |
EXW/FCA/FOB/CIF/DAP/DDP |
|
Packaging style |
Small boxes+cartons+pallets Small bags+cartons+pallets Bulk +cartons+pallets Bulk +bags+pallets |
|
Payment terms |
30% T/T as deposit,70%balance before delivery |
|
Payment methods |
Bank account/Ali pay Qr code/Wechat Qr code/Western Union.... |

Drawing picture


Applications
These 316 stainless steel socket head cap screws are essential components across multiple industries.




Why choose us?
At Hebei Kappa Metal Products, we don't just sell fasteners; we provide reliable connection solutions for critical industries worldwide.
1. Engineering Excellence
With decades of deep-rooted experience in the hardware sector, we master the precision required for construction, automotive, and electronics.
2. Uncompromised Quality
From raw material sourcing to final packaging, every bolt, nut, and screw undergoes rigorous quality control, guaranteeing durability and safety in every shipment.
3. Global Trust
Our long-standing partnerships with clients across India, South Africa, Thailand, Zimbabwe, and Ecuador speak for themselves. We don't just export products; we export consistency and responsibility, ensuring your supply chain never stops.

FAQ
Q: What does "A4-70" mean?
A: "A4" refers to the material grade (316 stainless steel), and "70" indicates the minimum tensile strength in hundreds of MPa - so A4-70 means 316 stainless steel with a tensile strength of at least 700 MPa.
Q: What is the difference between 316 and 316L stainless steel?
A: 316L has a lower carbon content than 316, providing enhanced resistance to intergranular corrosion after welding. Both offer excellent corrosion resistance, but 316L is preferred for welded assemblies .
Q: Are these screws fully threaded or partially threaded?
A: Both options are available. Fully threaded screws provide maximum thread engagement, while partially threaded screws have a plain shank for applications requiring shear strength. Please specify your preference when ordering .
Q: Do you provide samples before bulk orders?
A: Yes, samples are available upon request. We can ship samples within 3-5 days for your quality testing and approval.

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