S-91381A360 5/16"-24 x 3/8" ASME B18.3 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with brass soft tip design that prevents loosening under dynamic loads
• Maximum torque transmission through precision Class 3A thread fit ensuring secure fastening
• Enhanced durability with Black-Oxide Alloy Steel construction and Rockwell C28 hardness rating
• Easy installation and removal with 5/32" hex drive in headless design for confined spaces
• Surface protection against corrosion with black-oxide finish extending service life
• Damage-free fastening thanks to brass tip that protects mating surfaces from marring
• Reliable performance in demanding applications with UNF fine thread for better load distribution

Professional Applications & Engineering Value

This Black-Oxide Alloy Steel set screw addresses critical industrial fastening challenges where vibration resistance and surface protection are paramount. The brass soft tip provides superior grip while preventing damage to precision components in machinery, automotive assemblies, and manufacturing equipment. Engineered with Class 3A UNF fine threads, it delivers exceptional clamping force and maintains position integrity in high-stress environments. The headless design with 5/32" hex drive enables installation in tight spaces while the Rockwell C28 hardness ensures long-term reliability without deformation under heavy loads.

Specification Summary & Compliance

This precision fastener features 5/16"-24 UNF fine threads with Class 3A thread fit for superior dimensional accuracy. Manufactured to ASME B18.3 specifications with 3/8" length and right-hand thread direction. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across industrial applications.