S-91375A376 3/8"-24 x 2 3/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-oxide finish for longer service life in harsh industrial environments
• Superior thread precision with Class 3A UNF fine threads ensuring reliable, vibration-resistant connections
• High torque transmission capability through hex drive design for secure installation and removal
• Exceptional hardness and durability with Rockwell C45 hardness rating for repeated use without deformation
• Secure component positioning with cup tip design that provides excellent grip and prevents slippage
• Space-saving headless configuration ideal for applications with limited clearance requirements
• Right-hand thread direction for standard installation procedures and compatibility with existing assemblies

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers exceptional performance in demanding industrial applications where precision and reliability are paramount. The 3/8"-24 UNF Class 3A fine threads provide superior holding power in soft materials and prevent loosening under vibration, making them ideal for machinery, automotive components, and precision equipment. The hex drive design ensures maximum torque transfer during installation, while the cup tip creates positive engagement with mating surfaces. With Rockwell C45 hardness, this fastener maintains its structural integrity through repeated use cycles, solving common issues of fastener wear and premature failure in high-stress applications. The corrosion-resistant black-oxide surface treatment extends service life in environments exposed to moisture and chemicals.

Specification Summary & Compliance

This set screw features precision 3/8"-24 UNF Class 3A threads with fine thread spacing for superior fit and vibration resistance. Manufactured to ASME B18.3 specifications and meeting ASTM F912 requirements, it ensures dimensional accuracy and performance consistency. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications with strict material restrictions.