S-90128A753 5/16"-24 x 1 1/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 170,000 PSI ensures reliable performance in high-stress industrial applications
• Superior corrosion resistance with zinc-plated alloy steel construction for extended service life in harsh environments
• Precision Class 3A thread fit provides optimal engagement and vibration resistance in critical assemblies
• Fine thread configuration (24 TPI) delivers enhanced clamping force and superior load distribution
• Standard hex socket drive (1/4") allows for high-torque installation in confined spaces
• Full threading along the entire 1-1/4" length enables versatile positioning and adjustment capabilities
• Rockwell C37 hardness maintains dimensional stability and prevents stripping under repeated use

Professional Applications & Engineering Value

Engineered for demanding industrial applications, this 5/16"-24 UNF socket head cap screw solves critical fastening challenges through its zinc-plated alloy steel construction and Class 3A fine threads. The combination delivers exceptional vibration resistance and precise alignment in machinery, automotive systems, and precision equipment where corrosion resistance and dimensional stability are paramount. The fully threaded design allows for maximum adjustability in assembly processes, while the standard hex socket drive facilitates installation in tight spaces common in industrial equipment maintenance and manufacturing applications.

Specification Summary & Compliance

This socket head cap screw features precision Class 3A thread fit with 5/16"-24 UNF fine threads and right-hand thread direction. Manufactured to ASTM A574 specifications with complete compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. The product maintains dimensional accuracy with 1/4" hex drive, 15/32" head diameter, and 1-1/4" fully threaded length, ensuring consistent performance across industrial applications.