S-91375A712 1/2"-13 x 1" ASME B18.3, ASTM F912 Set Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance from the black-oxide finish, extending service life in demanding environments
• Superior holding power with Class 3A thread fit for precise, vibration-resistant assemblies
• High-strength performance due to Rockwell C45 hardness, preventing deformation under heavy loads
• Secure, flush installation with the headless hex drive design, ideal for confined spaces
• Reliable grip and minimal surface damage from the cup point tip, maintaining component integrity
• Broad industrial compatibility with UNC coarse threads for quick assembly and disassembly
• Confident compliance with ASME B18.3, RoHS 3, and REACH standards for safe, regulated use

Professional Applications & Engineering Value

This black-oxide alloy steel set screw is engineered to address common industrial challenges like vibration loosening and corrosion in machinery. The headless design with a 1/4" hex drive allows for flush mounting in tight spaces, while the 1/2"-13 UNC coarse threads and Class 3A fit ensure precise engagement and resistance to shock. With Rockwell C45 hardness, it maintains structural integrity under high stress, making it ideal for securing gears, pulleys, and collars in automotive, aerospace, and heavy equipment applications. The cup point tip bites securely into surfaces without excessive damage, providing reliable, long-term fastening solutions.

Specification Summary & Compliance

This set screw adheres to ASME B18.3 specifications, with 1/2"-13 UNC coarse threads and a Class 3A thread fit for high precision. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental and safety standards are upheld in industrial use.