S-91251A254 10-24 x 2 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 under high-stress conditions
• Black-oxide coating on alloy steel provides corrosion resistance and enhanced durability in demanding environments
• Class 3A thread fit delivers precise, vibration-resistant connections for critical applications
• Coarse UNRC threads enable faster installation and reduced cross-threading risks
• Partially threaded design allows for optimal clamping force distribution
• 5/32" hex drive socket head provides secure tool engagement and high torque capability
• Rockwell C37 hardness maintains structural integrity through repeated use cycles

Professional Applications & Engineering Value

These black-oxide alloy steel socket head cap screws deliver exceptional engineering value across industrial applications where vibration resistance and structural integrity are paramount. The coarse UNRC thread configuration combined with Class 3A fit ensures rapid assembly in production environments while maintaining precise alignment in machinery, automotive components, and heavy equipment. The partial threading design concentrates clamping force where needed most, preventing joint loosening in high-vibration settings. The black-oxide surface treatment provides essential corrosion protection while maintaining dimensional stability, making these socket head screws ideal for applications requiring both chemical resistance and reliable fastening performance in challenging operating conditions.

Specification Summary & Compliance

Manufactured to ASTM A574 specifications with Class 3A thread fit precision and coarse UNRC threads. These socket head cap screws feature a 5/32" hex drive and partially threaded design with minimum thread length of 7/8". Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures suitability for global industrial applications.