S-91251A197 8-32 x 3/4" 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 on alloy steel extends service life and maintains integrity in harsh industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant connections, minimizing loosening in machinery and equipment.
- Fully threaded design offers consistent gripping power along the entire length, enhancing load distribution and fastening stability.
- High hardness (Rockwell C37) resists wear and deformation, ensuring long-term durability and reduced maintenance needs.
- Hex socket drive allows for easy installation with standard tools, improving assembly efficiency and reducing downtime.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees adherence to industry standards for safety and environmental responsibility.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address common industrial challenges, such as vibration-induced loosening and corrosion in heavy-duty machinery. Its 8-32 UNC coarse threads with Class 3A fit ensure precise engagement, reducing the risk of strip-out in high-torque applications like automotive assemblies, aerospace components, and manufacturing equipment. The fully threaded rod type provides uniform stress distribution, while the hex drive style facilitates quick installation in confined spaces. Ideal for industrial fasteners requiring robust performance, it combines high tensile strength and hardness to withstand extreme loads, ensuring operational reliability and minimizing downtime in critical systems.
Specification Summary & Compliance
This screw features precise UNC coarse threads with a Class 3A thread fit for accurate dimensional tolerance, manufactured in accordance with ASTM A574 specifications. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability for industrial use.
