S-91251A980 10-24 x 3 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 applications, reducing the risk of fastener failure
• Superior corrosion resistance with Black-Oxide coating protects against rust and extends service life in demanding industrial environments
• Precise Class 3A thread fit provides excellent engagement and vibration resistance, maintaining secure connections under dynamic loads
• High hardness rating (Rockwell C37) offers excellent wear resistance and durability for repeated assembly and disassembly cycles
• Standard hex drive compatibility with 5/32" drive size allows for easy installation and removal using common industrial tools
• Partially threaded design enables optimal clamping force distribution while reducing weight and material usage
• Full regulatory compliance with ASTM A574, RoHS 3, and REACH ensures environmental safety and meets international quality standards

Professional Applications & Engineering Value

These Black-Oxide alloy steel socket head cap screws deliver critical performance advantages in demanding industrial applications where high tensile strength and corrosion resistance are paramount. The UNRC coarse thread configuration combined with Class 3A thread fit ensures rapid assembly and superior vibration resistance in machinery, automotive components, and heavy equipment. The partially threaded design provides optimal stress distribution while the standard hex drive facilitates installation in confined spaces. Engineered to withstand extreme mechanical stresses, these socket head cap screws maintain integrity in high-vibration environments, making them ideal for precision equipment, manufacturing fixtures, and structural assemblies requiring reliable fastening solutions.

Specification Summary & Compliance

Manufactured to exacting ASTM A574 specifications with precision Class 3A thread fit and UNRC coarse thread profile. Features include 10-24 thread size, 3-1/4" length, 5/32" hex drive, and Black-Oxide surface treatment. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors while meeting international quality and safety standards.