S-92695A649 1/4"-28 x 5/16" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in harsh industrial environments
• Maximum holding power through 90° cone point design that bites deeply into mating surfaces
• Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening
• Enhanced durability from Rockwell C45 hardness alloy steel that withstands heavy loads
• Space-saving installation with headless design ideal for confined assembly areas
• Secure torque transmission via 1/8" hex drive that prevents tool slippage during tightening
• Regulatory compliance meeting international environmental and safety standards

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers exceptional performance in demanding mechanical assemblies where vibration resistance and permanent positioning are critical. The 90° cone point tip creates concentrated pressure points that prevent component slippage in pulleys, gears, and collars, while the fine UNF threads provide superior load distribution compared to coarse threads. The headless hex drive design allows flush mounting in space-constrained applications, and the Rockwell C45 hardness ensures the screw maintains its mechanical properties under continuous stress. Ideal for precision machinery, automotive components, and industrial equipment requiring reliable set screw solutions.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit for precision tolerance, this set screw features 1/4"-28 UNF fine threads with right-hand direction. The 5/16" length and 1/8" hex drive provide standardized dimensions for consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.