S-90128A761 5/16"-24 x 1 3/4" 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 under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc plating protects against rust and extends service life in harsh industrial environments.
- Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant assemblies in critical applications.
- Fine thread spacing (UNF) offers improved adjustment accuracy and higher fatigue resistance compared to coarse threads.
- Partially threaded design allows for controlled clamping force and prevents over-tightening in specific joint configurations.
- 1/4" hex drive socket head enables easy installation with standard tools, minimizing assembly time and labor costs.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency, environmental safety, and global regulatory acceptance.
Professional Applications & Engineering Value
This 5/16"-24 UNF socket head cap screw is engineered to address common industrial challenges such as vibration loosening, corrosion, and high-load demands. The zinc-plated alloy steel construction provides a durable barrier against moisture and chemicals, making it ideal for machinery, automotive, and outdoor equipment. The fine thread spacing and Class 3A thread fit deliver superior clamping force and resistance to dynamic stresses, ensuring long-term reliability in precision assemblies. With a Rockwell C37 hardness and 170,000 psi tensile strength, it withstands extreme operational conditions without compromising integrity, reducing maintenance needs and downtime.
Specification Summary & Compliance
This fastener adheres to Class 3A thread fit for precise dimensional accuracy and UNF fine thread standards. It is manufactured in compliance with ASTM A574 specifications, ensuring consistent quality and performance. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use worldwide.
