S-91375A604 5/16"-24 x 1" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit ensuring precise, vibration-resistant connections in demanding applications
• Enhanced corrosion resistance through black-oxide surface treatment, extending service life in various industrial environments
• Optimized installation torque with 5/32" hex drive design preventing tool slippage and ensuring consistent fastening pressure
• Exceptional mechanical strength from alloy steel construction with Rockwell C45 hardness for reliable performance under heavy loads
• Secure component positioning through cup tip design that concentrates contact pressure and prevents loosening
• Space-saving headless configuration allowing flush mounting where clearance is limited
• Industry-standard compatibility with UNF fine threads (5/16"-24) ensuring interchangeability with existing equipment

Professional Applications & Engineering Value

This 5/16"-24 UNF Class 3A set screw delivers critical engineering solutions for precision assembly applications where vibration resistance and space constraints present significant challenges. The black-oxide alloy steel construction provides superior protection against environmental corrosion while maintaining Rockwell C45 hardness for exceptional shear strength. The headless design with cup tip creates concentrated contact pressure that prevents rotational slippage in shafts, collars, and gears. Particularly valuable in industrial machinery, automotive components, and precision equipment, these fine thread set screws maintain clamping force under continuous vibration through their Class 3A thread fit precision. The 5/32" hex drive ensures reliable installation in confined spaces without compromising torque transmission.

Specification Summary & Compliance

This precision fastener maintains Class 3A thread fit tolerances with 5/16"-24 UNF fine threads and right-hand thread direction. Manufacturing complies with ASME B18.3 specifications (ASTM F912) ensuring dimensional accuracy and performance reliability. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations (SVHC list as of 01/17/2023) for environmental safety. Standard configuration includes 1" length with consistent 0.313" thread diameter and cup tip design for optimal fastening performance.