S-91864A006 1-72 x 1/8" 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.
- Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic environments.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance, extending service life in various industrial conditions.
- Fine UNF thread design allows for finer adjustments and stronger holding power in thin materials or precision assemblies.
- Compact 1/16" hex drive and standard socket head enables easy installation in confined spaces with standard tools, improving assembly efficiency.
- Full threading along the 1/8" length ensures maximum grip and uniform load distribution across the entire fastener.
- High Rockwell C37 hardness provides excellent wear resistance, maintaining thread integrity through repeated use.
Professional Applications & Engineering Value
This 1-72 UNF Class 3A socket head cap screw is engineered for precision applications where space constraints and high strength are critical. The black-oxide alloy steel construction, combined with a fine thread and Class 3A fit, addresses common issues like vibration-induced loosening and corrosion in machinery, electronics, and automotive assemblies. Its compact 1/16" hex drive and fully threaded design allow for secure fastening in tight areas, reducing assembly time and enhancing reliability. Ideal for industrial fasteners in demanding environments, it ensures consistent performance under heavy loads while complying with stringent industry standards.
Specification Summary & Compliance
This screw features a 1-72 UNF fine thread with Class 3A precision tolerance, ensuring tight fits and minimal backlash. It is manufactured from alloy steel with a black-oxide surface treatment, meeting ASTM A574 specifications for high-strength socket head cap screws. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for global supply chains.
