S-90128A175 1"-8 x 6" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional tensile strength of 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc plating protects against rust and extends service life in harsh industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies, minimizing loosening over time.
- High hardness rating (Rockwell C37) offers excellent wear resistance and durability under repetitive loads.
- 3/4" hex drive design allows for easy installation and high torque application with standard tools, improving assembly efficiency.
- Partially threaded shank with 2 1/2" minimum thread length enables optimal grip and clamping force in variable material thicknesses.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global industrial use.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this 1"-8 UNC Class 3A socket head cap screw delivers robust performance in machinery, automotive, and construction assemblies. The zinc-plated alloy steel construction combats corrosion, while the coarse UNC thread facilitates quick installation and resists vibration-induced loosening. Its partially threaded design concentrates clamping force where needed, preventing joint failure in heavy-duty applications. With a 170,000 psi tensile strength and Rockwell C37 hardness, it withstands extreme mechanical stresses, making it ideal for high-torque environments where reliability is critical.
Specification Summary & Compliance
This screw features a 1"-8 UNC coarse thread with Class 3A fit for precise engagement, a 6" length, and 3/4" hex drive for standard tool compatibility. It meets ASTM A574 specifications for high-strength socket head cap screws and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to international safety and environmental standards.
