S-91251A179 8-32 x 1/8" 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 provides reliable load-bearing capacity in demanding applications.
- Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh environments.
- Precision Class 3A thread fit ensures smooth, secure installation and reduces the risk of cross-threading.
- High Rockwell C37 hardness offers excellent wear resistance and maintains thread integrity under vibration.
- Fully threaded UNC coarse thread design allows for deeper engagement and faster assembly in coarse materials.
- Standard hex socket drive (9/64") enables high-torque installation with common tools in confined spaces.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global supply chains.
Professional Applications & Engineering Value
This 8-32 UNC thread socket head cap screw is engineered to address critical challenges in industrial assembly, such as vibration loosening and material fatigue. The black-oxide alloy steel construction provides a durable barrier against oxidation, making it ideal for automotive, machinery, and electronic enclosures where moisture resistance is essential. The coarse UNC thread and Class 3A fit ensure rapid, precise fastening in metals and plastics, reducing installation time while maintaining joint integrity. With its fully threaded design and high tensile strength, it delivers consistent clamping force in high-stress applications, preventing failures and minimizing maintenance downtime.
Specification Summary & Compliance
This screw features a right-hand UNC coarse thread with a Class 3A fit for precise dimensional accuracy. It meets ASTM A574 specifications for alloy steel socket head cap screws, ensuring material consistency and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible manufacturing and use in regulated industries.
