S-90128A652 3/8"-16 x 5 1/2" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc plating, extending service life in demanding industrial environments
• Exceptional tensile strength rated at 170,000 psi for reliable performance under high-stress applications
• Precise Class 3A thread fit ensures secure, vibration-resistant fastening with minimal backlash
• Hex socket drive design provides superior torque transmission and access in confined spaces
• Rockwell C37 hardness maintains structural integrity and prevents thread deformation during installation
• Coarse UNC threading enables quick assembly and reduced cross-threading risks
• Comprehensive regulatory compliance meets ASTM A574, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

These zinc-plated alloy steel socket head cap screws deliver critical performance where standard fasteners fail. The 3/8"-16 UNC coarse thread configuration combined with Class 3A precision prevents loosening in high-vibration machinery, while the partially threaded design concentrates clamping force exactly where needed. The hex socket drive accommodates high torque applications without stripping, making these industrial fasteners ideal for heavy equipment, automotive assemblies, and precision manufacturing where 170,000 psi tensile strength and corrosion resistance are mandatory. The 5 1/2" length with 1 1/2" minimum thread engagement provides versatile mounting solutions across structural applications.

Specification Summary & Compliance

Manufactured to ASTM A574 specifications with Class 3A thread fit ensuring precision tolerance. Features 3/8"-16 UNC coarse threads with right-hand direction and partial threading. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for international industrial applications.