S-91375A670 7/16"-14 x 1 1/4" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating, extending service life in demanding industrial environments
• Exceptional holding power from Class 3A thread fit, ensuring vibration-resistant fastening in high-stress applications
• Optimized torque transmission through 7/32" hex drive, preventing tool slippage and damage during installation
• Enhanced material durability with Rockwell C45 hardness alloy steel, maintaining structural integrity under heavy loads
• Secure component positioning via cup tip design, providing concentrated contact pressure to prevent axial movement
• Reliable coarse threading with UNC 7/16"-14 specification, enabling quick installation and superior resistance to loosening
• Broad regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for global industrial acceptance

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical engineering solutions for industrial machinery, power transmission systems, and precision equipment assembly. The headless hex design with 7/32" drive accommodates confined spaces while maintaining full torque capability. Engineered with Class 3A thread fit and UNC coarse threading, it addresses vibration-induced loosening in high-torque applications through superior thread engagement. The cup tip configuration concentrates clamping force on shafts and collars, preventing rotational slippage in permanent installations. Rockwell C45 hardness ensures dimensional stability under continuous mechanical stress, making it ideal for heavy-duty set screw applications requiring long-term reliability without maintenance intervention.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with precise Class 3A thread fit tolerance for optimal engagement. Features UNC 7/16"-14 coarse threads with right-hand direction and consistent 0.438" diameter. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial markets. The black-oxide surface treatment on alloy steel substrate provides corrosion protection while maintaining dimensional accuracy per ASTM F912 requirements.