S-90044A127 1/4"-20 x 2 1/2" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel Socket Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
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 coating extends service life in harsh industrial environments, minimizing maintenance needs.
- Precision Class 3A thread fit provides consistent engagement and vibration resistance, enhancing assembly integrity.
- High hardness (Rockwell C37) offers excellent wear resistance, maintaining thread integrity through repeated use.
- Hex socket drive design allows for high-torque installation in confined spaces, improving installation efficiency.
- Coarse UNRC threads enable quicker assembly and reduced cross-threading risks, saving time in production lines.
- Full compliance with ASTM A574 and environmental regulations ensures material consistency and safe usage globally.
Professional Applications & Engineering Value
Engineered for demanding environments, these black-oxide alloy steel socket head cap screws address common industrial challenges such as vibration loosening and corrosion-induced failures. The Class 3A thread fit and coarse UNRC threads provide secure fastening in heavy machinery, automotive systems, and precision equipment, where alignment and durability are critical. The high tensile strength and Rockwell C37 hardness ensure the fastener withstands dynamic loads without deformation, while the black-oxide surface treatment offers added protection against moisture and chemicals. Ideal for assembly lines requiring speed and reliability, these screws reduce downtime and enhance long-term performance in industrial and mechanical applications.
Specification Summary & Compliance
This socket head cap screw features precise Class 3A thread fit with UNRC coarse threads for consistent performance. Manufactured to ASTM A574 specifications, it ensures high strength and dimensional accuracy. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and regulated use in global markets.
