S-91375A893 7/8"-14 x 1" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Class 3A thread fit for precise, vibration-resistant connections in high-stress environments
• Exceptional durability from Rockwell C45 hardened alloy steel that resists wear and deformation under heavy loads
• Secure installation with hex drive and 1/2" drive size providing reliable torque transmission without head interference
• Enhanced grip from cup tip design that creates positive seating and prevents component slippage
• Fine thread spacing offering improved adjustment precision and better load distribution compared to coarse threads
• Right-hand thread direction ensuring compatibility with standard assembly practices and equipment
• Regulatory compliance meeting ASME B18.3 specifications and environmental standards for global industrial use

Professional Applications & Engineering Value

This alloy steel set screw delivers critical engineering solutions for demanding industrial applications where component security is paramount. The combination of Rockwell C45 hardness and Class 3A UNF fine threads provides exceptional resistance to vibrational loosening in machinery, power transmission systems, and precision equipment. The headless design with hex drive allows for flush mounting in confined spaces while maintaining high torque capability. The cup tip creates concentrated pressure points that securely lock shafts, collars, and gears in position without damaging components. Engineered to ASME B18.3 specifications with fine thread spacing, this fastener ensures reliable performance in automotive, manufacturing, and heavy equipment applications where precise positioning and repeated adjustment are required.

Specification Summary & Compliance

This 7/8"-14 UNF set screw features Class 3A thread fit for superior dimensional accuracy and meets ASME B18.3 specifications (ASTM F912). The 1" length with fine thread spacing provides precise engagement, while the alloy steel construction with Rockwell C45 hardness ensures mechanical reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict material and safety standards.