S-90044A275 1 1/8"-12 x 4" ASTM A574 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Black-Oxide Alloy Steel construction providing superior corrosion resistance in harsh industrial environments
• Maximum torque transmission through the 7/8" hex drive socket, preventing tool slippage and ensuring secure fastening
• Precise thread engagement with Class 2A UNF fine threads offering superior vibration resistance and reliable clamping force
• Optimized strength-to-weight ratio with 170,000 psi tensile strength and Rockwell C37 hardness for heavy-duty applications
• Versatile installation options with partially threaded design allowing for both threaded and unthreaded section functionality
• Industry-standard compliance meeting ASTM A574 specifications for consistent quality and performance
• Environmental responsibility with RoHS 3 and REACH compliance for safe use across regulated industries

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Black-Oxide Alloy Steel socket head cap screws deliver exceptional performance in heavy machinery, automotive assembly, and construction equipment. The 1 1/8"-12 UNF fine thread configuration provides superior resistance to vibration loosening, while the 7/8" hex drive ensures maximum torque application without stripping. The partially threaded design allows for precise clamping control in structural applications where both threaded and unthreaded sections are required. The black-oxide surface treatment enhances corrosion protection without compromising dimensional accuracy, making these industrial socket screws ideal for applications requiring both strength and environmental resistance.

Specification Summary & Compliance

This high-strength socket head cap screw features Class 2A thread fit tolerance for precise engagement and 1 1/8"-12 UNF fine threads meeting standard inch system requirements. Manufactured in compliance with ASTM A574 specifications for alloy steel socket head cap screws, ensuring consistent mechanical properties and dimensional accuracy. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components.