S-92991A132 5/16"-18 x 1 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from brass construction, ideal for harsh environments and reducing maintenance costs
• Exceptional thread precision with Class 3A fit ensures reliable, vibration-resistant fastening in critical assemblies
• High torque capability via the 5/32" hex drive prevents tool slippage and simplifies installation
• Optimized grip and minimal surface damage from the cup tip design, protecting expensive components
• Enhanced durability with Rockwell B55 hardness for long service life under mechanical stress
• Broad industrial compatibility due to UNC coarse threads, enabling quick assembly and disassembly
• Regulatory peace of mind with full compliance to ASME B18.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This brass set screw is engineered to address common industrial challenges like corrosion, vibration loosening, and component wear. The Class 3A thread fit and UNC coarse threads provide a secure, precise engagement that resists back-out in dynamic applications, from machinery to electrical enclosures. The headless design with hex drive allows for flush mounting in tight spaces, while the cup tip concentrates clamping force without marring surfaces. Made from brass, it offers excellent conductivity and resistance to galvanic corrosion, making it a reliable choice for industrial set screws in plumbing, marine, and electronic assemblies where material compatibility and longevity are critical.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with a 5/16"-18 UNC thread size, Class 3A thread fit for high precision, and coarse thread spacing. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global industrial use.