S-91251A685 7/16"-14 x 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 in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance from the black-oxide coating extends service life in harsh industrial environments, minimizing maintenance needs.
- Precise Class 3A thread fit provides tight, secure fastening with excellent vibration resistance, enhancing assembly integrity.
- High Rockwell C37 hardness offers excellent wear resistance, maintaining thread integrity through repeated use.
- Partially threaded design allows for optimal clamping force on specific sections, improving joint stability.
- Coarse UNC thread enables quick and easy installation, saving time in assembly lines.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material quality and environmental safety, meeting global industry standards.
Professional Applications & Engineering Value
This Black-Oxide Alloy Steel Socket Head Cap Screw is engineered to address critical challenges in heavy-duty industrial settings, such as machinery, automotive, and construction equipment. The alloy steel construction combined with a black-oxide surface treatment provides robust protection against corrosion and wear, extending fastener lifespan in demanding conditions. With a 7/16"-14 UNC coarse thread and Class 3A thread fit, it ensures rapid, secure installation and superior resistance to loosening under vibration. The hex drive design allows for high-torque application, making it ideal for applications requiring reliable, high-strength fastening solutions that minimize downtime and maintenance costs.
Specification Summary & Compliance
This screw features precise Class 3A thread fit per UNC standards, ensuring dimensional accuracy and reliable performance. It is manufactured in compliance with ASTM A574 specifications for high-strength socket head cap screws, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial use without hazardous substances.
