S-91251A632 3/8"-16 x 2" 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 under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish extends service life in harsh industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies.
- Hex socket drive design allows for high-torque installation with standard tools, minimizing slip and tool wear.
- Coarse UNC threads enable faster installation and better debris resistance compared to fine threads.
- Partially threaded shank offers optimal clamping force distribution for joint integrity.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety for global supply chains.
Professional Applications & Engineering Value
Engineered for demanding applications, this Black-Oxide Alloy Steel Socket Head Cap Screw combines high tensile strength and corrosion resistance to address common industrial challenges like vibration loosening and environmental degradation. The 3/8"-16 UNC coarse thread and Class 3A fit ensure quick, secure fastening in machinery, automotive assemblies, and heavy equipment, where precision and durability are critical. Its partially threaded design concentrates clamping force effectively, reducing stress concentration points. Ideal for high-torque hex drive operations, it supports maintenance efficiency and long-term reliability in sectors requiring ASTM A574 compliance.
Specification Summary & Compliance
This screw adheres to Class 3A thread fit for precise dimensional accuracy under the UNC coarse thread standard. Manufactured to meet ASTM A574 specifications, it ensures consistent mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally regulated markets and industrial applications requiring high-strength, corrosion-resistant fasteners.
