S-92220A181 1/4"-20 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 in critical assemblies.
- Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
- Precision Class 3A thread fit guarantees tight, secure fastening with minimal play, enhancing assembly accuracy and vibration resistance.
- Low-profile socket head design allows installation in confined spaces while providing ample torque transfer with a 1/8" hex drive.
- High hardness rating (Rockwell C39) maintains thread integrity and drive socket shape, even after repeated use.
- Full threading along the entire 1/4" length offers consistent clamping force and flexibility in adjustment.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency, environmental safety, and global regulatory acceptance.
Professional Applications & Engineering Value
Engineered for precision and endurance, these low socket head cap screws address common industrial challenges such as space constraints and vibration-induced loosening. The black-oxide alloy steel construction provides a durable barrier against rust and wear, making them ideal for machinery, automotive, and aerospace applications where exposure to oils and moisture is frequent. With a coarse UNC thread and Class 3A fit, installation is swift and secure, reducing assembly time while maintaining high clamp load integrity. The low-profile head and hex drive design enable easy access in tight compartments, ensuring reliable performance in complex assemblies without compromising on strength or compliance.
Specification Summary & Compliance
This screw adheres to inch system measurements with a 1/4"-20 UNC coarse thread and Class 3A thread fit for precise dimensional accuracy. Manufactured in compliance with ASTM A574 specifications, it meets stringent material and performance standards. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.
