S-91251A055 0-80 x 1/4" 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 in high-stress applications, reducing the risk of fastener failure.
- Class 3A thread fit provides superior precision and tight tolerances for secure, vibration-resistant assemblies in critical machinery.
- Black-oxide coating on alloy steel enhances corrosion resistance and durability, extending service life in harsh industrial environments.
- Hex socket drive design allows for easy installation and high torque application, minimizing tool slippage and improving assembly efficiency.
- UNF fine threads offer improved holding power and finer adjustment capabilities in precision engineering applications.
- Full threading along the 1/4" length ensures consistent grip and flexibility for various mounting depths and configurations.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global industrial standards.
Professional Applications & Engineering Value
This 0-80 UNF socket head cap screw is engineered to address common challenges in precision assemblies, such as vibration loosening and material fatigue. The black-oxide alloy steel construction, combined with a Rockwell C37 hardness, provides excellent wear resistance and strength for demanding applications in aerospace, automotive, and electronics manufacturing. The fine UNF threads and Class 3A fit ensure secure fastening in tight spaces, reducing maintenance needs and enhancing operational reliability. Ideal for use in industrial fasteners requiring high tensile strength and compliance with stringent regulations, this screw delivers consistent performance in critical engineering environments.
Specification Summary & Compliance
This socket head cap screw adheres to precise inch system dimensions, including a thread size of 0-80 UNF with Class 3A thread fit for superior accuracy. Manufactured in accordance with ASTM A574 specifications, it ensures high-quality alloy steel material and reliable performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial use.
