S-91251A424 3/8"-24 x 1" 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 in demanding applications.
- Superior corrosion resistance from the black-oxide finish extends service life in harsh environments, minimizing maintenance and replacement costs.
- Precision Class 3A thread fit provides tight, secure connections with minimal backlash, ideal for applications requiring high vibration resistance.
- Fine UNF thread design offers improved load distribution and better sealing capabilities compared to coarse threads, enhancing joint integrity.
- 5/16" hex drive compatibility allows for easy installation with standard tools while providing high torque transmission without stripping.
- Full-threaded construction ensures consistent engagement along the entire length, maximizing holding power in various material thicknesses.
- Industry compliance with ASTM A574, RoHS 3, and REACH standards guarantees material quality and environmental safety for global supply chain integration.
Professional Applications & Engineering Value
Engineered for precision industrial applications where reliability and corrosion resistance are critical, these socket head cap screws solve common fastening challenges in machinery, automotive, and aerospace assemblies. The black-oxide alloy steel construction combined with Class 3A UNF fine threads delivers superior vibration resistance and fatigue strength, preventing loosening in dynamic load conditions. The fully threaded design and high tensile strength make them ideal for securing components in tight spaces where maximum clamp load is required. Their compliance with international standards ensures consistent performance in OEM and MRO applications across regulated industries.
Specification Summary & Compliance
Manufactured to ASTM A574 specifications with Class 3A thread fit (UNF 3/8"-24) and inch system dimensions. Features include Rockwell C37 hardness and 170,000 psi tensile strength. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in international markets.
