S-91375A440 10-32 x 3/8" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from the Black-Oxide finish, extending service life in demanding industrial environments
• Exceptional holding power and minimal vibration loosening due to the fine UNF Class 3A thread fit and cup tip design
• High-strength durability provided by the alloy steel construction with a Rockwell C45 hardness rating
• Secure and reliable installation enabled by the 3/32" hex drive in a headless design, ideal for confined spaces
• Precision alignment and consistent performance ensured by compliance with the stringent ASME B18.3 and ASTM F912 specifications
• Safe for use in regulated industries as it is fully compliant with RoHS 3 and REACH environmental standards
• Optimized for right-hand thread applications with a 3/8" length, offering versatile fastening solutions

Professional Applications & Engineering Value

This 10-32 UNF Class 3A Black-Oxide Alloy Steel set screw is engineered to address critical challenges in precision assembly and machinery. The headless hex drive design allows for installation in tight spaces where traditional screw heads are impractical, while the cup tip provides excellent bite and resistance to rotational forces, preventing component slippage. Manufactured from alloy steel and treated to a Rockwell C45 hardness, it withstands high stress and wear in applications like securing gears, pulleys, and collars onto shafts. The fine thread spacing and Class 3A fit ensure a tight, precise engagement, reducing the risk of thread stripping and maintaining alignment in dynamic systems. This makes it an ideal corrosion-resistant fastener for automotive, aerospace, and industrial equipment, where reliability and compliance with ASME B18.3 standards are paramount.

Specification Summary & Compliance

This set screw adheres to precise dimensional and performance criteria, including a 10-32 UNF thread size with Class 3A tolerance for superior fit and a fine thread spacing. It is manufactured in accordance with ASME B18.3 and meets ASTM F912 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial applications.