S-90128A247 1/4"-20 x 1" ASTM A574 Alloy Steel Socket Head Screws
Alloy Steel 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 170,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Zinc-plated alloy steel construction provides superior corrosion resistance, extending service life in harsh industrial environments.
- Class 3A thread fit offers precise, tight tolerances for secure fastening and vibration resistance in machinery assemblies.
- Hex socket drive design allows for high torque application and easy installation in confined spaces with standard hex keys.
- Fully threaded UNC coarse thread enables quick assembly and strong holding power across the entire length.
- Compliance with ASTM A574, RoHS 3, and REACH guarantees material quality and environmental safety for global industrial use.
- Rockwell C37 hardness provides excellent wear resistance and durability under repeated load cycles.
Professional Applications & Engineering Value
Engineered for demanding industrial settings, these socket head cap screws deliver critical reliability where failure is not an option. The zinc-plated alloy steel material combats rust and corrosion in outdoor or chemically exposed environments, while the UNC coarse thread and Class 3A fit ensure rapid, secure fastening in heavy machinery, automotive assemblies, and structural frameworks. The hex drive and fully threaded design facilitate easy installation in tight spaces, reducing assembly time and maintenance costs. Ideal for applications requiring high tensile strength and vibration resistance, these screws provide long-term performance in construction, manufacturing, and equipment repair.
Specification Summary & Compliance
This product features a 1/4"-20 UNC coarse thread with Class 3A precision fit, ensuring dimensional accuracy and reliable engagement. Manufactured in compliance with ASTM A574 specifications, it meets rigorous standards for material quality and mechanical properties. Additionally, the screw is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, adhering to environmental and safety regulations for hazardous substances.
