S-92311A555 1/4"-28 x 3/16" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Maximum holding power through precision cup point design that bites into materials for secure, slip-resistant fastening
• Exceptional thread precision with Class 3A UNF fine threads ensuring tight tolerances and reliable engagement
• Enhanced durability from Rockwell B80 hardness providing excellent resistance to wear and deformation
• Space-saving installation with headless design ideal for confined spaces and flush mounting applications
• Easy installation and removal using standard 1/8" hex tools for efficient maintenance and adjustments
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 18-8 stainless steel set screws deliver critical engineering solutions for demanding industrial applications where vibration resistance and permanent fastening are paramount. The cup point design creates concentrated pressure that digs into shaft materials, preventing rotational slippage in high-torque environments. The UNF fine thread configuration provides superior clamping force distribution compared to coarse threads, making these hex headless fasteners ideal for precision machinery, automotive components, and manufacturing equipment where minimal clearance and reliable positioning are essential. The combination of Rockwell B80 hardness and corrosion-resistant stainless steel ensures these Class 3A set screws maintain their integrity in challenging conditions, reducing maintenance frequency and replacement costs.

Specification Summary & Compliance

This 1/4"-28 UNF set screw features precision Class 3A thread fit tolerances with right-hand thread direction and fine thread spacing. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.