S-91251A201 8-32 x 1 1/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with black-oxide coating, ideal for harsh industrial environments
• Superior tensile strength of 170,000 psi ensures reliable performance under high-stress conditions
• Precise Class 3A thread fit guarantees secure fastening and vibration resistance
• Rockwell C37 hardness provides excellent durability and wear resistance
• Partially threaded design allows for optimal grip and easy alignment in assemblies
• Hex socket drive (9/64") enables high-torque installation with standard tools
• Compliance with RoHS 3 and REACH ensures safe, environmentally responsible use

Professional Applications & Engineering Value

This 8-32 UNC thread socket head cap screw is engineered from black-oxide alloy steel to address common industrial challenges like corrosion and mechanical failure. Its coarse thread and Class 3A fit provide quick assembly and superior holding power in machinery, automotive, and heavy equipment applications. The partially threaded rod design minimizes cross-threading risks, while the hex drive allows for tight spaces and high torque. Meeting ASTM A574 standards, it delivers consistent performance in demanding environments, reducing maintenance needs and downtime.

Specification Summary & Compliance

This screw features a UNC coarse thread with Class 3A fit for precise dimensional accuracy, a minimum thread length of 7/8", and a total length of 1-1/4". Manufactured to ASTM A574 specifications, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to international safety and environmental regulations for industrial use.