S-90585A217 6-32 x 7/8" ASME B18.3, ASTM F879 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel and passivated finish, ideal for harsh industrial environments
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing applications
• Precise Class 3A thread fit ensures secure fastening and vibration resistance in demanding assemblies
• Full threading design provides maximum grip length and uniform stress distribution along the entire screw
• Standard 82° countersink angle allows for flush mounting in precision-machined components
• Hex drive compatibility with 5/64" tooling enables efficient installation and removal in confined spaces
• Regulatory compliance with ASME B18.3, RoHS 3, and REACH standards for global industrial acceptance

Professional Applications & Engineering Value

These 6-32 UNC flat head screws in 316 stainless steel deliver exceptional engineering value where corrosion resistance and mechanical reliability are critical. The combination of fully threaded design and Class 3A thread fit prevents loosening under vibration in machinery, electrical enclosures, and marine equipment. The passivated finish enhances surface durability against chemicals and moisture, while the 82° countersink angle ensures seamless integration in precision applications. With coarse UNC threading facilitating quick assembly, these screws solve common industrial challenges of material degradation and fastener failure in demanding environments.

Specification Summary & Compliance

Manufactured to ASME B18.3 specifications with Class 3A thread fit tolerance for precision fastening. Dimensions include 7/8" length, 0.307" head diameter, and 5/64" hex drive. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.