S-92785A505 4-40 x 1/2" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Maximum holding power through Class 3A thread fit precision, providing secure fastening with minimal vibration loosening
• Easy installation and removal with 0.050" hex drive design, allowing efficient maintenance in confined spaces
• Enhanced grip and alignment from the 90° cone point tip, preventing component slippage during operation
• Exceptional durability with Rockwell B80 hardness, maintaining structural integrity under repeated stress
• Broad industrial compatibility through UNC coarse threading, enabling quick assembly in various applications
• Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for global supply chain integration

Professional Applications & Engineering Value

This 4-40 UNC set screw delivers critical engineering solutions where space constraints and vibration resistance are paramount. The headless design with hex drive enables flush mounting in precision equipment, while the 90° cone point creates concentrated clamping force to prevent rotational movement in shafts, collars, and gears. Manufactured from 18-8 stainless steel, it resists chemical corrosion and oxidation in manufacturing, automotive, and electronic assemblies. The Class 3A thread fit ensures consistent engagement in coarse thread applications, reducing installation time while maintaining industrial-grade reliability under dynamic loads.

Specification Summary & Compliance

This set screw maintains Class 3A thread fit tolerance with UNC coarse threading (4-40) and 1/2" length. Manufacturing conforms to ASME B18.3 specifications for dimensional accuracy. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use in international markets.