316 Stainless Steel Socket Head Cap Screws DIN 912 A4-70 Hex Allen Bolts

316 Stainless Steel Socket Head Cap Screws DIN 912 A4-70 Hex Allen Bolts

We supply premium 316 stainless steel socket head cap screws engineered for high-strength precision fastening in demanding industrial environments. Manufactured to DIN 912 and ISO 4762 standards, these cylindrical head hex allen bolts feature a deep internal hex socket that enables maximum torque application in confined spaces without the risk of stripping . The A4-316 stainless steel offers superior corrosion resistance to 304 in saltwater and chemical environments, while the A4-70 strength class delivers reliable mechanical performance . Available in metric sizes from M3 to M20 and inch sizes, with full threading options and custom lengths supported. As a direct factory, we offer competitive pricing, customization, and fast delivery for bulk orders.
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Description

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....

 

 

product-931-627

Drawing picture

 

product-800-494

 

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Applications
 

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

product-1-1
Shipbuilding industry
Hex socket cap bolt
Steel structure industry
Chemical industry sector
Chemical industry sector
Construction industry
Construction industry
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.

 

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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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