S-90044A129 1/4"-20 x 3" 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
- Superior corrosion resistance with black-oxide coating for extended service life in harsh industrial environments
- Exceptional tensile strength of 170,000 psi ensures reliable performance under high-stress applications
- Precise Class 3A thread fit provides secure fastening with minimal play and vibration resistance
- Rockwell C37 hardness maintains structural integrity and prevents stripping during installation
- Hex socket drive design allows for high-torque installation in confined spaces
- Full threading along the entire 3" length enables adjustable positioning and maximum grip
- Regulatory compliance with ASTM A574, RoHS 3, and REACH ensures environmental and safety standards are met
Professional Applications & Engineering Value
These black-oxide alloy steel socket head cap screws deliver critical performance advantages for demanding industrial applications. The combination of 170,000 psi tensile strength and Rockwell C37 hardness provides exceptional resistance to shear forces and deformation, making them ideal for heavy machinery, automotive assemblies, and precision equipment. The UNRC coarse threads with Class 3A fit ensure rapid installation and reliable clamping force in high-vibration environments. The black-oxide surface treatment offers superior corrosion protection without compromising dimensional accuracy, while the hex socket drive enables efficient torque transmission in space-constrained applications. These fully threaded cap screws maintain consistent performance across their entire 3" length, providing engineers with versatile fastening solutions for critical structural connections.
Specification Summary & Compliance
This 1/4-20 socket head cap screw features precise Class 3A thread fit with UNRC coarse threads and right-hand threading direction. Manufactured to ASTM A574 specifications for high-strength alloy steel fasteners, it maintains dimensional accuracy throughout its 3" fully threaded length. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
