S-91375A450 10-32 x 1 1/2" 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 loosening due to the Class 3A thread fit and fine UNF thread spacing, ensuring a secure, vibration-resistant connection.
• High-strength, durable performance provided by the alloy steel construction and Rockwell C45 hardness, resisting wear and deformation under load.
• Secure, flush installation enabled by the headless design with a 3/32" hex drive, ideal for applications where a protruding head is not permissible.
• Enhanced grip and damage prevention from the cup tip, which concentrates force for a positive bite into the mating surface without excessive marring.
• Reliable right-hand thread direction for standard installation and removal, facilitating efficient assembly and maintenance.
• Guaranteed quality and material safety through compliance with ASME B18.3, ASTM F912, RoHS 3, and REACH standards.

Professional Applications & Engineering Value

This 10-32 UNF Class 3A set screw is engineered to solve critical challenges in precision assemblies where space is limited and vibration is a concern. The headless design and compact 3/32" hex drive allow for installation in tight confines, making it ideal for securing collars, gears, and pulleys on shafts. The black-oxide alloy steel construction provides a robust barrier against rust, while the Rockwell C45 hardness ensures the screw maintains its form and clamping force under high-stress conditions. The fine thread spacing and Class 3A fit deliver a tighter tolerance than standard fits, drastically reducing the risk of loosening in dynamic applications. The cup tip design offers an excellent compromise, providing a strong biting action for secure positioning while being less likely to cause significant surface damage compared to sharper point types, preserving the integrity of costly components.

Specification Summary & Compliance

This set screw features a 10-32 UNF thread with a Class 3A fit for high precision, a length of 1 1/2", and a 3/32" hex drive. It is manufactured from alloy steel with a black-oxide surface treatment and a Rockwell C45 hardness. The product is manufactured to meet ASME B18.3 and ASTM F912 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.