S-90128A132 10-32 x 1 3/8" 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 and prevents fastener failure
• Superior corrosion resistance from zinc-plated alloy steel construction extends service life in harsh industrial environments
• Precision Class 3A thread fit provides secure, vibration-resistant connections with minimal backlash in critical assemblies
• High hardness rating (Rockwell C37) maintains thread integrity and drive socket durability through repeated installation cycles
• Fine thread spacing delivers enhanced clamping force distribution and improved resistance to loosening under dynamic loads
• Partially threaded design allows for precise positioning and secure fastening in specific engagement zones
• Comprehensive compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental responsibility

Professional Applications & Engineering Value

These 10-32 UNF socket head cap screws deliver critical engineering solutions where precision and reliability are paramount. The zinc-plated alloy steel construction addresses corrosion concerns in manufacturing equipment, automotive systems, and outdoor machinery applications. With their fine thread spacing and Class 3A thread fit, these fasteners prevent vibration-induced loosening in dynamic assemblies while maintaining precise alignment. The hex drive design allows for high-torque installation in confined spaces, making them ideal for precision machinery, tooling fixtures, and heavy-duty equipment where access is limited. The combination of 170,000 psi tensile strength and Rockwell C37 hardness ensures these screws withstand extreme mechanical stresses without deformation or failure.

Specification Summary & Compliance

Manufactured to exacting ASTM A574 specifications with Class 3A thread fit tolerances for precision engagement. The 10-32 UNF fine thread configuration ensures optimal performance in applications requiring fine adjustment capabilities. These socket head cap screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, containing no substances of very high concern above threshold limits. The zinc-plated surface treatment provides consistent corrosion protection while maintaining dimensional stability across the 1-3/8" length and 5/32" hex drive configuration.