S-92185A138 5-40 x 5/8" Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel construction, ideal for harsh chemical and marine environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Precise thread engagement with Class 3A fit ensuring vibration resistance and secure fastening in critical assemblies
• Enhanced durability through passivated surface treatment that improves corrosion protection and extends service life
• Optimized drive efficiency with standard hex socket and 3/32" drive size for secure tool engagement and reduced stripping risk
• Full-threaded design providing consistent clamping force along the entire 5/8" length for uniform stress distribution
• Regulatory compliance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

These 316 stainless steel socket head cap screws deliver exceptional performance in demanding applications where corrosion resistance and mechanical reliability are paramount. The combination of UNC coarse threads and Class 3A thread fit ensures rapid assembly with minimal cross-threading risk while maintaining vibration resistance in dynamic environments. The passivated finish significantly enhances the natural corrosion resistance of 316 stainless steel, making these fasteners ideal for chemical processing equipment, marine hardware, and food processing machinery where exposure to corrosive agents is common. The fully threaded design and 70,000 psi tensile strength provide consistent clamping force distribution, preventing joint relaxation under thermal cycling and mechanical stress. These characteristics make them particularly valuable in precision equipment, automation systems, and industrial machinery requiring reliable, maintenance-free fastening solutions.

Specification Summary & Compliance

This socket head cap screw features 5-40 UNC coarse threads with Class 3A thread fit precision, right-hand thread direction, and standard socket head profile. Manufacturing specifications include Rockwell B70 hardness, 70,000 psi tensile strength, and passivated surface finish. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international standards for hazardous substance restrictions and chemical safety.