S-91864A027 8-32 x 1 5/8" 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 (170,000 psi) ensures reliable performance in high-stress industrial applications, reducing the risk of fastener failure.
- Black-oxide coating on alloy steel provides enhanced corrosion resistance and a durable, non-reflective finish suitable for demanding environments.
- Class 3A thread fit offers superior precision and tighter tolerances for secure, vibration-resistant assemblies with minimal backlash.
- Partially threaded design with 7/8" minimum thread length allows for optimal grip and alignment in components, improving assembly efficiency.
- Hex socket drive (9/64") and standard socket head profile enable easy installation with common tools, reducing assembly time and tool wear.
- Coarse UNC threads facilitate quick engagement and disassembly, ideal for applications requiring frequent maintenance or adjustments.
- Compliance with ASTM A574, RoHS 3, and REACH ensures material consistency, environmental safety, and adherence to international quality standards.
Professional Applications & Engineering Value
Engineered for precision and durability, these 8-32 UNC thread socket head cap screws are ideal for machinery, automotive, and aerospace assemblies where high tensile strength and corrosion resistance are critical. The black-oxide alloy steel construction withstands harsh conditions, while the Class 3A thread fit minimizes loosening under vibration, ensuring long-term reliability. With a coarse thread and hex drive, they simplify installation in tight spaces, reducing labor costs and enhancing productivity in industrial fastener applications.
Specification Summary & Compliance
This screw features a Class 3A thread fit with UNC coarse threads, ensuring precise dimensional accuracy per inch system standards. It meets ASTM A574 for material consistency and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming environmental and safety adherence without restricted substances.
