S-91251A271 8-32 x 3/32" 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.
- Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies with minimal backlash.
- Fully threaded design offers consistent engagement along the entire length, enhancing load distribution and holding power.
- Coarse UNC threading enables quicker installation and removal, saving time in maintenance and assembly operations.
- Hex socket drive compatibility allows for high-torque application with standard tools, preventing stripping and improving installation efficiency.
- Compliance with ASTM A574 guarantees material integrity and manufacturing consistency for critical engineering applications.
Professional Applications & Engineering Value
Engineered for precision and durability, these socket head cap screws with 8-32 UNC coarse threads and black-oxide alloy steel construction address common industrial challenges such as vibration loosening and environmental degradation. The Class 3A thread fit ensures minimal play in assemblies, crucial for machinery, automotive, and aerospace components where alignment and stability are paramount. With a Rockwell C37 hardness and 170,000 PSI tensile strength, they withstand extreme loads and repetitive stress, reducing maintenance downtime. The hex drive design facilitates easy access in confined spaces, making them ideal for robust fastening in heavy-duty equipment and precision instruments.
Specification Summary & Compliance
This screw adheres to inch system measurements with precise dimensions: 8-32 UNC thread size, 9/64" hex drive, and 3/32" length. It meets Class 3A thread fit standards for accuracy and is manufactured in compliance with ASTM A574 for material quality. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence for global supply chains.
