S-91418A855 3/4"-10 x 5" ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance through black-oxide coating, extending service life in harsh industrial environments
• Superior torque transmission with square head and external square drive design for secure installation and removal
• Reliable thread engagement with Class 2A UNC coarse threads ensuring consistent fastening in high-vibration applications
• Optimized material strength from alloy steel with Rockwell C45 hardness for exceptional durability under heavy loads
• Precise component positioning via extended tip design with tight diameter tolerance for accurate alignment
• Industry-standard compliance meeting ASTM F912 specifications for guaranteed performance and safety
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

This 3/4"-10 UNC square head set screw delivers critical engineering solutions for industrial machinery, automotive assemblies, and heavy equipment applications. The black-oxide alloy steel construction provides superior corrosion resistance while maintaining Rockwell C45 hardness for exceptional shear strength. The extended tip design ensures precise component positioning in pulley systems, gear assemblies, and rotating shafts, preventing slippage under extreme torque conditions. With coarse UNC threads and Class 2A thread fit, this heavy-duty fastener maintains secure connections in high-vibration environments, reducing maintenance frequency and downtime. The combination of external square drive and substantial 5" length makes it ideal for applications requiring deep penetration and high clamping force.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread profile. The extended tip maintains tight tolerances with tip diameter tolerance of -0.013" to 0" and tip length tolerance of -0.005" to 0.005". Full compliance with ASTM F912 manufacturing specifications, RoHS 3 (2015/863/EU) environmental directives, and REACH (EC 1907/2006) chemical safety standards ensures reliability and regulatory adherence for global industrial applications.