S-90665A161 1/4"-20 x 1" ASTM A574 Alloy Steel Low-Profile Socket Head Screws
Alloy Steel Low-Profile 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 140,000 psi ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc plating protects against rust and environmental damage, extending service life in harsh conditions.
- Precise Class 3A thread fit guarantees tight, secure connections with minimal backlash, improving assembly accuracy and vibration resistance.
- Low-profile socket head design allows installation in confined spaces while providing ample torque transfer with a standard 1/8" hex drive.
- Fully threaded body offers consistent clamping force along the entire length, enhancing grip and load distribution in assemblies.
- High hardness (Rockwell C39) resists wear and deformation, maintaining thread integrity through repeated use and high-torque applications.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety, meeting global regulatory standards for industrial components.
Professional Applications & Engineering Value
Engineered for demanding environments, these zinc-plated alloy steel socket head cap screws address common challenges in machinery, automotive, and heavy equipment assembly. The UNC coarse threads and Class 3A fit provide rapid installation with high resistance to loosening under dynamic loads, while the low-profile head minimizes protrusion in compact designs. With a tensile strength of 140,000 psi and corrosion-resistant plating, they prevent joint failure and reduce maintenance in exposed or high-vibration settings, ensuring long-term reliability in industrial fastening applications.
Specification Summary & Compliance
This 1/4"-20 x 1" socket head cap screw features precise Class 3A thread fit per UNC standards, manufactured under ASTM A574 specifications for consistent quality. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material traceability.
