S-90128A209 8-32 x 2" 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, reducing failure risks in demanding applications.
• Superior corrosion resistance from zinc plating protects against rust and extends service life in harsh industrial environments.
• Precise Class 3A thread fit provides secure, vibration-resistant fastening with minimal backlash for improved assembly accuracy.
• Hex socket drive design allows for high-torque installation and removal in confined spaces, enhancing maintenance efficiency.
• Partially threaded shank offers optimal grip length control, preventing over-tightening and material damage.
• Rockwell C37 hardness rating maintains thread integrity and head durability through repeated use cycles.
• Compliance with ASTM A574 guarantees consistent quality and mechanical properties for engineering-critical applications.

Professional Applications & Engineering Value

Engineered for industrial machinery, automotive assemblies, and precision equipment, these 8-32 UNC socket head cap screws address critical challenges in vibration-prone and high-load environments. The zinc-plated alloy steel construction combats corrosion while the coarse UNC thread ensures rapid installation and superior holding power in softer materials. With a 9/64" hex drive and standardized socket head profile, they enable secure fastening in tight spaces where wrench clearance is limited. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening and reducing stress concentration points—making them ideal for heavy-duty cap screw applications requiring repeated disassembly.

Specification Summary & Compliance

This 2" length socket head cap screw features Class 3A thread fit precision with UNC coarse thread spacing and right-hand thread direction. Manufactured to ASTM A574 specifications, it maintains dimensional accuracy across all critical parameters including head diameter (0.27") and minimum thread length (1"). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in regulated industries.