S-91274A052 8-32 x 3/8" ASME B18.3, ASTM A574, ASTM B117 Alloy Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc-flake coating, ideal for harsh industrial environments
• High tensile strength of 170,000 psi ensures reliable performance under extreme loads
• Precise Class 3A thread fit provides superior engagement and vibration resistance
• Rockwell C37 hardness delivers excellent durability and wear resistance
• Standard hex drive design allows for easy installation with common tools
• Full compliance with ASME B18.3 and ASTM A574 guarantees consistent quality and interchangeability
• RoHS 3 and REACH compliant meets strict environmental and safety regulations

Professional Applications & Engineering Value

This 8-32 UNC socket head cap screw is engineered for demanding applications where reliability is critical. The zinc-flake-coated alloy steel construction provides superior protection against corrosion, extending service life in challenging conditions like outdoor equipment or chemical processing. With its coarse thread spacing and Class 3A thread fit, it ensures quick assembly and maintains tight tolerances, reducing the risk of loosening under vibration. The fully threaded design and hex drive facilitate efficient installation in confined spaces, making it ideal for machinery, automotive, and aerospace assemblies where high strength and environmental compliance are essential.

Specification Summary & Compliance

This fastener features precise UNC coarse threads with Class 3A fit for accurate engagement, manufactured in accordance with ASME B18.3 and ASTM A574 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity.