S-90344A124 8-32 x 1 1/2" ASTM A574 Socket Head Screws with Flat Washer

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-oxide finish on both screw and washer, extending service life in harsh industrial environments
• Exceptional load distribution through integrated flat washer design, preventing surface damage and maintaining joint integrity
• Precise Class 3A thread fit ensures reliable engagement and vibration resistance in critical assemblies
• High tensile strength (170,000 psi) provides maximum fastening security for demanding mechanical applications
• Optimized drive efficiency with 9/64" hex socket design allowing high torque application without stripping
• Enhanced durability from Rockwell C39 hardness alloy steel construction, resisting wear and deformation
• Regulatory compliance assurance meeting ASTM A574, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw with integrated flat washer addresses critical engineering challenges in industrial equipment assembly. The 8-32 UNC coarse thread configuration combined with Class 3A thread fit provides superior vibration resistance in machinery subjected to dynamic loads. The partially threaded design allows precise clamping force control while the black-oxide surface treatment on both components ensures consistent corrosion protection. Engineered for high-stress applications requiring 170,000 psi tensile strength, this fastener system delivers reliable performance in automotive, manufacturing, and heavy equipment assemblies where socket head accessibility and washer-protected surfaces are essential for maintenance and longevity.

Specification Summary & Compliance

Manufactured to precise inch system dimensions with Class 3A thread tolerance for superior fit. The UNC coarse thread spacing and right-hand thread direction conform to industry standards. Compliance verified with ASTM A574 specification for alloy steel socket head cap screws, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) for chemical safety. The Rockwell C39 hardness and material properties ensure consistent performance across industrial applications.