S-91301A200 3/4"-16 x 3/8" Set Screws

Key Features & Benefits at a Glance

• Superior corrosion protection with Black-Oxide coating, extending service life in harsh industrial environments
• Exceptional thread precision with Class 3A fit for secure, vibration-resistant fastening in critical assemblies
• High-strength alloy steel construction with Rockwell C45 hardness for reliable performance under heavy loads
• Space-saving headless design with 3/8" hex drive for easy installation in confined spaces
• Fine thread spacing (UNF 3/4"-16) providing superior holding power and reduced loosening in dynamic applications
• Right-hand threading compatibility for standard installation procedures and equipment
• Full regulatory compliance with RoHS 3 and REACH standards for global industrial use

Professional Applications & Engineering Value

This Black-Oxide alloy steel set screw delivers critical engineering advantages where precision fastening and corrosion resistance are paramount. The Class 3A thread fit ensures minimal backlash and superior clamping force in machinery, automotive, and aerospace assemblies where vibration-induced loosening can compromise safety. The headless design with 3/8" hex drive allows installation in space-constrained applications while maintaining high torque capability. Manufactured from high-strength alloy steel with Rockwell C45 hardness, these UNF fine thread set screws provide reliable performance in pulley systems, gear assemblies, and precision equipment requiring exact positioning and repeated adjustment cycles without thread deformation.

Specification Summary & Compliance

This precision fastener features 3/4"-16 UNF fine threads with Class 3A thread fit for superior dimensional accuracy and tight tolerances. The right-hand thread direction and 3/8" hex drive provide standardized installation compatibility. Manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental responsibility and global regulatory acceptance for industrial applications demanding high-performance set screws with consistent quality and reliability.