S-90044A278 0-80 x 1 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 under high-stress conditions, reducing the risk of fastener failure.
- Class 3A thread fit provides superior precision and tighter tolerances for secure, vibration-resistant assemblies in critical applications.
- Black-oxide coating on alloy steel offers enhanced corrosion resistance and durability, extending service life in demanding environments.
- Fine UNF threads deliver improved clamping force and better load distribution compared to coarse threads, ideal for precision engineering.
- Hex socket drive design allows for easy installation and removal with standard tools, minimizing assembly time and tool wear.
- Full threading along the 1-1/4" length enables flexible positioning and consistent grip across the entire fastener.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety for global industrial use.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Socket Head Cap Screw with 0-80 UNF fine thread is engineered to address common industrial challenges such as vibration loosening and material fatigue. The high tensile strength (170,000 psi) and Rockwell C37 hardness make it suitable for heavy-duty applications in machinery, automotive, and aerospace sectors, where reliability is critical. The Class 3A thread fit ensures minimal backlash and secure fastening in precision assemblies, while the black-oxide surface treatment provides added protection against rust and wear. Its hex drive compatibility simplifies maintenance and reduces installation errors, enhancing overall operational efficiency in industrial fastening systems.
Specification Summary & Compliance
This socket head cap screw features a 0-80 UNF fine thread with Class 3A thread fit for high precision, and is fully threaded along its 1-1/4" length. It complies with ASTM A574 specifications for alloy steel socket head cap screws, ensuring consistent material and mechanical properties. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulatory requirements, supporting safe and environmentally responsible usage in various industries.
