S-90128A957 10-32 x 2 1/4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated alloy steel construction for extended service life in harsh environments
• Exceptional tensile strength rated at 170,000 psi ensures reliable performance under high-stress applications
• Precision Class 3A thread fit provides superior engagement and vibration resistance in critical assemblies
• Optimized torque transmission through 5/32" hex drive design prevents stripping and enables secure installation
• Versatile partial threading allows for both clamping and alignment functions in complex mechanical systems
• Industry-compliant manufacturing meeting ASTM A574 standards guarantees consistent quality and dimensional accuracy
• Environmental regulation compliance with RoHS 3 and REACH ensures safe usage across global markets

Professional Applications & Engineering Value

These 10-32 UNF socket head cap screws deliver critical engineering solutions where space constraints and high-strength requirements intersect. The zinc-plated alloy steel construction provides essential corrosion protection for industrial equipment, automotive components, and machinery exposed to operational stresses. With fine UNF threads and Class 3A fit, these fasteners maintain precise clamping force in vibrating environments where loosening could cause system failure. The partially threaded design allows engineers to combine secure fastening with precise component positioning. The hex socket drive enables installation in confined spaces while the Rockwell C37 hardness ensures durability against wear and deformation during repeated maintenance cycles.

Specification Summary & Compliance

Manufactured to ASTM A574 specifications with Class 3A thread fit ensuring precision tolerances for reliable engagement. The UNF fine thread system (10-32) provides superior holding power in materials requiring fine pitch fastening. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for global industrial applications. Thread specifications include right-hand direction, 0.19" thread diameter, and minimum 3/4" thread length on the 2-1/4" partially threaded configuration.