S-91375A178 8-32 x 1 3/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with cup point design that bites into mating surfaces for maximum holding power
• Exceptional durability with Rockwell C45 hardness that withstands heavy-duty industrial applications
• Precise thread engagement with Class 3A fit ensuring reliable performance in critical assemblies
• Corrosion-resistant protection through black-oxide coating that extends service life in demanding environments
• Streamlined installation with hex headless design allowing flush mounting in confined spaces
• Industry-standard compatibility with UNC coarse threads providing excellent engagement in various materials
• Enhanced torque transmission with 5/64" hex drive enabling secure fastening without slippage

Professional Applications & Engineering Value

This 8-32 UNC set screw delivers exceptional engineering value in applications requiring reliable component positioning and torque transmission. The black-oxide alloy steel construction combined with Rockwell C45 hardness provides superior resistance to wear and deformation in high-stress environments. The cup point design creates concentrated pressure that prevents shaft slippage in pulleys, gears, and collars, while the hex headless configuration enables flush mounting where protruding fasteners are impractical. Particularly valuable in precision machinery, automotive assemblies, and industrial equipment, this right-hand thread set screw with coarse thread spacing ensures quick installation and removal while maintaining consistent clamping force under vibration and dynamic loads.

Specification Summary & Compliance

Manufactured to exacting inch system specifications with 1 3/4" length and 0.164" thread diameter. Features Class 3A thread fit for precision applications and complies with ASME B18.3 specifications where identified as ASTM F912. Meets environmental standards including RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant as of January 17, 2023, ensuring safe use in regulated industries.