S-91375A499 7/8"-14 x 2" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide coating for extended service life in harsh industrial environments
• Exceptional thread precision with Class 3A fit ensuring reliable, vibration-resistant fastening in critical applications
• High-strength performance backed by Rockwell C45 hardness for maximum load-bearing capacity and durability
• Optimized torque transmission through 1/2" hex drive design preventing tool slippage and installation damage
• Secure component positioning with cup tip design providing positive engagement and minimal surface marring
• Industry-standard compliance meeting ASME B18.3 specifications for guaranteed dimensional accuracy and performance
• Environmental regulation adherence with RoHS 3 and REACH compliance for safe, sustainable manufacturing

Professional Applications & Engineering Value

This black-oxide alloy steel set screw delivers critical engineering advantages in demanding industrial applications where vibration resistance and long-term reliability are paramount. The 7/8"-14 UNF fine threads with Class 3A precision maintain secure fastening under dynamic loads, while the headless hex drive design allows for flush mounting in space-constrained assemblies. The cup tip configuration provides concentrated clamping force without damaging shaft surfaces, making it ideal for precision machinery, automotive components, and heavy equipment where repeated adjustments require consistent thread integrity. The combination of Rockwell C45 hardness and protective black-oxide finish ensures reliable performance in corrosive environments, reducing maintenance frequency and total cost of ownership.

Specification Summary & Compliance

This set screw maintains Class 3A thread fit tolerances per UNF standards with 7/8"-14 fine thread spacing and 2" length dimensions. Manufacturing complies with ASME B18.3 specifications (ASTM F912) ensuring dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations regarding chemical safety, confirming its suitability for global industrial applications requiring environmental responsibility.