S-91251A942 1 1/4"-7 x 5" 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 finish prolongs service life in demanding industrial environments.
- Precise Class 2A thread fit allows for smooth assembly and secure fastening, minimizing installation time and errors.
- Robust Rockwell C37 hardness provides excellent wear resistance, maintaining integrity under repeated use.
- Convenient 7/8" hex drive enables easy installation with standard tools, enhancing workflow efficiency.
- Partially threaded 5" design offers optimal grip and clamping force where full threading isn't required, improving versatility.
- Compliance with ASTM A574, RoHS 3, and REACH ensures adherence to strict quality and environmental standards, supporting responsible sourcing.
Professional Applications & Engineering Value
This black-oxide alloy steel socket head cap screw is engineered to address critical challenges in heavy machinery, construction, and automotive sectors. Its coarse UNRC thread and Class 2A fit provide rapid, secure fastening in high-vibration environments, reducing loosening risks. The partially threaded design concentrates clamping force precisely, preventing joint slippage in structural assemblies. With a 170,000 psi tensile strength and corrosion-resistant black-oxide coating, it withstands extreme loads and harsh conditions, minimizing maintenance downtime. Ideal for industrial fasteners requiring durability and compliance, it meets ASTM A574 specifications for consistent performance in critical applications.
Specification Summary & Compliance
This socket head cap screw features a 1 1/4"-7 coarse UNRC thread with Class 2A dimensional tolerance for precise fit. It is manufactured in accordance with ASTM A574 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.
