S-90585A650 8-32 x 3/16" ASME B18.3, ASTM F879 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel material, ideal for harsh environments and chemical exposure
• Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
• High tensile strength of 70,000 psi provides exceptional load-bearing capacity for demanding mechanical applications
• Durable Rockwell B55 hardness maintains thread integrity and prevents stripping during installation and use
• Standard 82° countersink angle enables flush mounting for streamlined surfaces and improved aesthetics
• Hex drive design with 3/32" drive size allows secure tool engagement and efficient installation in confined spaces
• Full threading along 3/16" length ensures maximum grip strength across the entire fastener engagement

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 316 stainless steel flat head screws deliver exceptional performance where corrosion resistance and mechanical reliability are paramount. The UNC coarse threading with Class 3A precision provides superior vibration resistance in machinery, electrical enclosures, and marine equipment, while the 82° flat head profile creates seamless surfaces in assembled products. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures these hex drive screws maintain clamping force under dynamic loads, making them ideal for industrial fastening applications requiring long-term durability and consistent performance in challenging conditions.

Specification Summary & Compliance

Manufactured to exacting standards with Class 3A thread fit and UNC coarse thread spacing for precision engagement. Fully compliant with ASME B18.3 specifications and ASTM F879 manufacturing standards. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Features include right-hand threading, standard 82° countersink angle, and dimensional tolerances including head diameter of 0.359" with -0.048" to 0" tolerance range.