S-91375A187 8-32 x 3/32" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating on alloy steel, ideal for harsh industrial environments
• Maximum holding power and vibration resistance achieved through precise Class 3A thread fit
• High-strength durability with Rockwell C45 hardness for reliable performance under load
• Secure, flush installation enabled by headless design with 5/64" hex drive
• Excellent grip and minimal surface damage from cup tip design during component contact
• Broad compatibility with UNC coarse threads and right-hand threading for standard inch-system assemblies
• Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

This 8-32 UNC set screw delivers critical engineering solutions where precision fastening and corrosion resistance are paramount. The black-oxide alloy steel construction prevents rust in humid or chemically aggressive settings, while the Class 3A thread fit ensures tight tolerances for secure locking of gears, pulleys, and collars on shafts. The headless design with 5/64" hex drive allows flush mounting in confined spaces, reducing protrusion risks. With coarse UNC threads and cup tip, it provides superior clamping force without damaging expensive components, making it ideal for machinery, automotive, and electrical enclosures requiring repeated adjustments and vibration resistance.

Specification Summary & Compliance

This set screw maintains Class 3A thread fit per UNC standards with 8-32 thread size and coarse spacing, ensuring dimensional accuracy for secure assemblies. Manufactured to ASME B18.3 specifications (ASTM F912) and heat-treated to Rockwell C45 hardness, it guarantees mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.