S-90344A137 6-32 x 1" 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 demanding industrial environments
• Exceptional mechanical strength with 170,000 psi tensile strength and Rockwell C39 hardness for high-stress applications
• Precision thread engagement with Class 3A UNC coarse threads ensuring reliable fastening and vibration resistance
• Integrated load distribution through the flat washer design, preventing surface damage and maintaining joint integrity
• Optimal drive efficiency with standard hex socket and 7/64" drive size for secure tool engagement and torque transmission
• Full-threaded design providing consistent clamping force along the entire 1" length for uniform stress distribution
• Regulatory compliance assurance meeting ASTM A574, RoHS 3, and REACH standards for global industrial applications

Professional Applications & Engineering Value

This black-oxide alloy steel socket head cap screw with integrated flat washer addresses critical engineering challenges in heavy machinery, automotive assemblies, and precision equipment. The Class 3A thread fit with UNC coarse threads ensures rapid installation and superior vibration resistance, while the 170,000 psi tensile strength provides reliable performance under extreme mechanical loads. The black-oxide surface treatment on both components offers enhanced corrosion protection without compromising dimensional accuracy, making these socket head cap screws ideal for applications requiring both structural integrity and environmental resistance. The combination of fully threaded design and integrated washer eliminates the need for separate components, streamlining assembly processes in high-volume manufacturing environments.

Specification Summary & Compliance

This fastener maintains precision Class 3A thread tolerances with UNC coarse thread form and right-hand thread direction. Manufactured to ASTM A574 specifications for alloy steel socket head cap screws, it features a standard socket head profile with 7/64" hex drive. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.