S-91864A024 8-32 x 7/16" 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 provides reliable performance in high-stress applications, reducing the risk of fastener failure.
- Precise Class 3A thread fit ensures superior engagement and vibration resistance, maintaining joint integrity in demanding environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance and a durable, non-reflective finish for extended service life.
- Hex socket drive (9/64") allows for high torque application and secure installation in confined spaces, minimizing tool slippage.
- Rockwell C37 hardness delivers excellent wear resistance, ensuring the screw retains its dimensional stability under repeated use.
- Fully threaded UNC coarse design enables quick assembly and strong holding power across the entire 7/16" length.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency and environmental safety for global industrial use.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in machinery, automotive, and heavy equipment assembly. The 8-32 UNC coarse thread with Class 3A fit provides tight tolerances that prevent loosening under vibration, a common issue in dynamic systems. Its high tensile strength (170,000 psi) and Rockwell C37 hardness ensure it withstands extreme loads and abrasion, reducing maintenance downtime. The hex drive design facilitates efficient installation with standard tools, making it ideal for precision applications where space is limited and reliability is paramount.
Specification Summary & Compliance
This screw adheres to UNC thread standards with a Class 3A fit for precise dimensional accuracy. It meets ASTM A574 specifications for high-strength alloy steel and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for international industrial markets.
