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Vichok Hardware

DIN7991/GB70.3 M2-M16 316 SS Screw Hex Socket Countersunk Flat Cup Head Fastener

DIN7991/GB70.3 M2-M16 316 SS Screw Hex Socket Countersunk Flat Cup Head Fastener

Regular price $14.96 USD
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316 stainless steel screws compliant with DIN7991 and GB70.3 standards are precision-engineered industrial fasteners, featuring a hex socket drive, countersunk head, and flat cup design. Covering sizes from M2 to M16 (including M2.5, M3, M4, M5), these screws deliver exceptional corrosion resistance and seamless flush-fit performance for diverse industrial, mechanical, and construction applications.
 
Crafted from high-grade 316 stainless steel, they offer superior resistance to rust, chemicals, saltwater, and harsh environmental conditions—ideal for marine, offshore, chemical plants, and outdoor installations where durability is critical. The hex socket drive ensures secure tool engagement and precise torque control, enabling stable installation even in narrow or hard-to-reach spaces.
 
The countersunk flat cup head design allows the screw to sit flush with the workpiece surface, eliminating protrusions for a clean finish and preventing snagging. Fully compliant with both DIN7991 and GB70.3 standards, they guarantee consistent dimensional accuracy, strong load-bearing capacity, and universal compatibility. Suitable for professionals and DIY projects alike, they cater to small precision components and medium-duty machinery fastening needs.
 

Core Features & Advantages

 
  • 316 Stainless Steel: Premium anti-corrosion performance for harsh marine/chemical environments.
  • Dual Standard Compliance: DIN7991 & GB70.3 ensure precision and universal compatibility.
  • Hex Socket Drive: Secure grip and precise torque control for efficient, stable installation.
  • Countersunk Flat Cup Head: Flush-fit design for a clean, snag-free workpiece surface.
  • M2-M16 Size Range: Covers diverse needs from small precision parts to medium-duty fastening.
 

Key Specifications

 
  • Material: 316 Stainless Steel
  • Standards: DIN7991, GB70.3
  • Drive Type: Hex Socket
  • Design: Countersunk Head, Flat Cup
  • Sizes: M2, M2.5, M3, M4, M5, M6-M16
  • Applications: Marine, Chemical Plants, Offshore, Machinery, Construction, Precision Equipment
  • Performance: Corrosion-Resistant, Flush-Fit, Durable, Precision-Machined
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