S-92220A311 2-56 x 1/4" 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 under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide finish on alloy steel extends service life in harsh or humid industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies in precision applications.
- Low-profile socket head design allows for installation in confined spaces while maintaining a sleek, unobtrusive appearance.
- High hardness rating (Rockwell C39) enhances wear resistance and durability, minimizing deformation during repeated use.
- Coarse UNC threading facilitates quicker installation and reduces cross-threading risks, improving assembly efficiency.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency, environmental safety, and global regulatory acceptance.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, this low-profile socket head cap screw combines black-oxide alloy steel with a Class 3A UNC thread to address critical challenges like space constraints and vibration loosening. The fully threaded design and coarse thread spacing enable rapid, secure fastening in machinery, electronics, and automotive assemblies, where precision and reliability are paramount. Its high tensile strength and corrosion-resistant surface make it ideal for applications exposed to mechanical stress or environmental factors, reducing maintenance needs and downtime. By integrating a hex drive for easy torque application, it streamlines installation in tight areas, enhancing productivity in industrial fastener systems.
Specification Summary & Compliance
This screw adheres to inch system dimensions, including a 1/4" length and 2-56 UNC thread with Class 3A fit for precise tolerance control. It meets ASTM A574 specifications for alloy steel socket head cap screws, ensuring material integrity and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms it is free of hazardous substances, supporting safe and sustainable use in global markets.
