S-92185A567 5/16"-18 x 1 1/8" Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments including marine and chemical applications
• Exceptional thread reliability through Class 3A fit UNC coarse threads, ensuring precise engagement and vibration resistance
• High tensile strength performance rated at 70,000 psi, providing dependable load-bearing capacity in demanding applications
• Enhanced durability with Rockwell B70 hardness and passivated finish, offering excellent wear resistance and extended service life
• Optimized drive efficiency featuring standard hex socket head with 1/4" drive, enabling secure installation in confined spaces
• Full-threaded design for maximum grip length and uniform stress distribution across the entire fastener
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, ensuring environmental and safety requirements are satisfied

Professional Applications & Engineering Value

This 316 stainless steel socket head cap screw delivers critical engineering advantages in demanding industrial environments where corrosion resistance and mechanical reliability are paramount. The combination of UNC coarse threads with Class 3A fit provides superior vibration resistance in machinery, automotive, and marine applications, while the passivated finish enhances surface protection against chemical exposure and atmospheric conditions. The fully threaded design ensures maximum engagement in tapped holes and through-holes, distributing clamp load evenly to prevent joint failure. With 70,000 psi tensile strength and Rockwell B70 hardness, this fastener maintains structural integrity under heavy dynamic loads, making it ideal for precision equipment, pump systems, and structural assemblies requiring long-term reliability in corrosive environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit and UNC coarse thread profile (5/16"-18) in the inch measurement system. The fastener features a standard socket head profile with 1/4" hex drive, 15/32" head diameter, and 1 1/8" fully threaded length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence for global industrial applications.