S-90128A451 7/16"-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 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 UNF thread design offers improved load distribution and better sealing capabilities compared to coarse threads.
- Fully threaded shank allows for maximum grip and adjustability across the entire length, enhancing assembly flexibility.
- Standard hex socket drive with 3/8" size enables easy installation and removal with common tools, minimizing assembly time.
- Compliance with ASTM A574 ensures consistent quality and material integrity for dependable engineering use.
Professional Applications & Engineering Value
This 7/16-20 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 applications. The Class 3A fine thread ensures a tight, secure fit that resists back-out under dynamic loads, while the fully threaded design allows for uniform clamping force. With a Rockwell C37 hardness and high tensile strength, it delivers reliable performance in heavy-duty assemblies, reducing maintenance needs and downtime.
Specification Summary & Compliance
This socket head cap screw features a 7/16"-20 UNF fine thread with Class 3A fit for precision assembly. It meets ASTM A574 specifications for material and manufacturing quality. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.
