S-91864A074 7/16"-20 x 1 3/4" 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.
- Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant connections in critical assemblies.
- Black-oxide finish on alloy steel offers enhanced corrosion resistance and durability, extending service life in harsh industrial environments.
- Fully threaded design with UNF fine threads allows for maximum grip and even load distribution, improving joint integrity.
- 3/8" hex drive socket head enables easy installation and removal with standard tools, reducing assembly time and effort.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety, meeting global regulatory standards.
- Rockwell C37 hardness provides excellent wear resistance, maintaining thread integrity through repeated use.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these Black-Oxide Alloy Steel Socket Head Cap Screws address common challenges like vibration loosening and corrosion. The 7/16"-20 UNF fine thread and Class 3A fit deliver precise alignment and high clamping force, ideal for machinery, automotive, and aerospace applications where reliability is critical. The fully threaded rod design ensures consistent engagement across the entire length, while the hex drive facilitates quick maintenance. By combining high tensile strength with a protective black-oxide surface treatment, these screws reduce downtime and enhance safety in heavy-duty assemblies.
Specification Summary & Compliance
This socket head cap screw features a Class 3A thread fit with UNF fine thread spacing, ensuring tight tolerances per industry standards. It meets ASTM A574 specifications for high-strength alloy steel, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable manufacturing practices.
