S-91375A018 1-64 x 1/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating that protects against rust in demanding industrial environments
• Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical applications
• High-strength durability from alloy steel construction with Rockwell C45 hardness for long-lasting performance under heavy loads
• Secure installation through hex drive design that prevents cam-out and provides consistent torque transmission
• Optimized grip with cup tip configuration that creates positive seating and minimizes component slippage
• Industry-standard compatibility meeting ASME B18.3 specifications for guaranteed interchangeability and quality
• Environmental compliance with RoHS 3 and REACH regulations for safe use in regulated industries

Professional Applications & Engineering Value

This 1-64 UNC set screw delivers exceptional engineering value in applications requiring precise component positioning and secure fastening. The black-oxide alloy steel construction provides superior corrosion protection while maintaining the Rockwell C45 hardness needed for high-strength requirements. The Class 3A thread fit ensures minimal clearance between mating parts, eliminating play and preventing loosening under vibration - a critical advantage in machinery, automotive, and aerospace applications. The headless hex drive design allows for flush mounting in confined spaces, while the cup tip creates concentrated contact pressure for secure shaft positioning in pulleys, gears, and collars. These industrial set screws solve common engineering challenges of component slippage, corrosion-induced failure, and maintenance-intensive fastening systems.

Specification Summary & Compliance

This precision fastener features 1-64 UNC coarse threads with Class 3A thread fit for exacting dimensional accuracy. Manufactured to ASME B18.3 specifications where applicable per ASTM F912, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental regulations for hazardous substance restrictions. Right-hand thread direction with standardized coarse thread spacing provides reliable engagement in various industrial applications.