S-90044A208 5/16"-32 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 in high-stress applications, reducing the risk of fastener failure.
- Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in critical assemblies.
- Black-oxide finish on alloy steel offers enhanced corrosion resistance and a durable, non-reflective surface for extended service life.
- Extra-fine UNEF thread allows for finer adjustments and secure fastening in thin materials or precise engineering applications.
- Standard socket head with 1/4" hex drive enables easy installation and high torque application in confined spaces.
- Full-threaded design ensures consistent holding power along the entire length, ideal for adjustable or deep-set applications.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material consistency and environmental safety for global industrial use.
Professional Applications & Engineering Value
Engineered for demanding environments, this 5/16"-32 UNEF socket head cap screw combines black-oxide alloy steel with a Class 3A thread fit to address common industrial challenges like vibration-induced loosening and material fatigue. The extra-fine thread provides superior grip in precision components, machinery, and automotive systems, where fine adjustments and reliable clamping force are critical. Its high Rockwell C37 hardness and 170,000 psi tensile strength ensure durability under heavy loads, making it suitable for assembly lines, tooling fixtures, and aerospace applications. The fully threaded design and standard socket head facilitate easy installation with standard hex keys, reducing assembly time and improving maintenance efficiency in tight spaces.
Specification Summary & Compliance
This screw adheres to inch system measurements with a Class 3A thread fit for precise tolerances, following UNEF extra-fine thread standards. It meets ASTM A574 specifications for material and manufacturing quality, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability.
