S-92196A138 6-40 x 5/8" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Exceptional thread precision with Class 3A fit ensures reliable, vibration-resistant fastening in critical applications
• High tensile strength of 70,000 psi provides dependable load-bearing capacity for demanding mechanical assemblies
• Fine thread spacing delivers enhanced clamping force and superior resistance to loosening under dynamic loads
• Standard hex socket drive (7/64") enables secure tool engagement and high torque application without cam-out
• Full threading along 5/8" length offers maximum adjustability and uniform stress distribution
• Rockwell B70 hardness maintains dimensional stability and thread integrity under repeated use

Professional Applications & Engineering Value

This 6-40 UNF socket head cap screw delivers critical engineering advantages where precision and reliability are paramount. The 18-8 stainless steel composition provides excellent corrosion resistance for applications in chemical processing, marine environments, and food equipment where moisture exposure is common. The fine thread spacing and Class 3A thread fit create superior vibration resistance in machinery, automotive components, and precision instruments, preventing costly downtime from loosening fasteners. The hex socket drive design allows for high torque application in confined spaces, making it ideal for compact assemblies and maintenance applications where accessibility is limited. These socket head cap screws solve common industrial challenges by combining material durability with precision threading for long-term operational reliability.

Specification Summary & Compliance

This precision fastener features 6-40 UNF fine threads with Class 3A fit ensuring tight tolerances for critical applications. Manufactured to ASME B18.3 specifications with complete RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety. The fully threaded 5/8" length maintains consistent mechanical properties throughout, backed by 70,000 psi tensile strength and Rockwell B70 hardness certification for reliable performance in industrial fastening systems.