S-91274A068 8-32 x 7/8" ASME B18.3, ASTM A574, ASTM B117 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 corrosion resistance with zinc-flake coating, ideal for harsh industrial environments and extended service life.
- Superior tensile strength of 170,000 psi ensures reliable performance under high-stress conditions, preventing fastener failure.
- Precision Class 3A thread fit guarantees secure, vibration-resistant assemblies with minimal risk of cross-threading.
- High Rockwell C37 hardness provides excellent wear resistance and maintains thread integrity during repeated use.
- Standard hex drive (9/64") design allows for easy installation and high torque application with common tools.
- Full-threaded UNC coarse thread enables faster installation and superior holding power in a wide range of materials.
- Compliance with major industry standards including ASME B18.3 and ASTM A574 ensures consistent quality and reliability.
Professional Applications & Engineering Value
This 8-32 UNC Socket Head Cap Screw is engineered to address critical challenges in industrial assembly and machinery. The zinc-flake-coated alloy steel construction provides a robust barrier against corrosion, significantly extending component life in demanding applications such as automotive, aerospace, and heavy equipment. The Class 3A thread fit and coarse UNC thread design ensure rapid, secure fastening with high resistance to loosening under vibration, a common failure point in dynamic systems. Its fully threaded body offers maximum grip length, making it versatile for various material thicknesses. The combination of 170,000 psi tensile strength and Rockwell C37 hardness makes it suitable for high-stress joints, providing engineers with a reliable solution for critical connections that require durability and precision.
Specification Summary & Compliance
This screw features a Class 3A thread fit for precise dimensional accuracy and a UNC coarse thread with a size of 8-32. It is manufactured in compliance with ASME B18.3 and ASTM A574 specifications, ensuring consistent quality and performance. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.
