S-91251A434 3/8"-24 x 2 1/2" 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 on alloy steel enhances durability in harsh industrial environments.
- Precise Class 3A thread fit guarantees tight, secure fastening with minimal play, ideal for applications requiring high accuracy.
- Fine UNF threading provides increased load distribution and vibration resistance compared to coarse threads.
- Partially threaded design allows for controlled clamping force and easier alignment in assembled components.
- Hex socket drive enables high-torque installation with standard tools, reducing slippage and tool wear.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency and environmental safety for global industrial use.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these socket head cap screws deliver critical performance in machinery, automotive assemblies, and precision equipment. The black-oxide alloy steel construction, combined with a Rockwell C37 hardness, resists wear and corrosion, extending service life in challenging conditions. The 3/8"-24 UNF fine thread with Class 3A precision ensures secure, vibration-resistant connections, minimizing loosening in dynamic loads. This makes them ideal for high-stress environments where reliability and tensile strength up to 170,000 psi are paramount, providing engineers with a dependable fastening solution that meets rigorous standards.
Specification Summary & Compliance
This screw adheres to inch system measurements with a Class 3A thread fit for superior dimensional accuracy. It meets ASTM A574 specifications for alloy steel socket head cap screws, ensuring consistent manufacturing quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use.
