S-90585A016 0-80 x 3/16" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh environments and chemical exposure
• Exceptional thread precision with Class 3A fit ensures reliable, vibration-resistant connections in critical assemblies
• High tensile strength of 70,000 psi provides secure fastening under mechanical stress without failure
• Fine UNF threading (0-80) delivers enhanced grip and load distribution in thin materials and precision components
• 82° countersink angle and flat head design enables flush mounting for streamlined surfaces and reduced snagging
• Hex drive compatibility (0.035") allows for high-torque installation with standard tools, minimizing slippage
• Full compliance with ASME B18.3, RoHS 3, and REACH guarantees industry-standard quality and environmental safety

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 0-80 UNF flat head screws in 316 stainless steel address critical challenges in precision machinery, marine equipment, and chemical processing systems. The passivated finish significantly enhances corrosion resistance, preventing degradation from moisture, salts, and aggressive chemicals. With fine threading and Class 3A thread fit, they provide superior holding power in thin-section materials and tight-tolerance assemblies, reducing the risk of loosening under dynamic loads. The 82° countersink and flat head profile ensure seamless integration into surfaces, maintaining aerodynamic and aesthetic integrity. Ideal for electronic enclosures, instrumentation, and aerospace components, these screws deliver long-term reliability where failure is not an option.

Specification Summary & Compliance

This fastener features a 0-80 UNF fine thread with Class 3A precision tolerance, ensuring consistent thread engagement and dimensional accuracy. Manufacturing adheres to ASME B18.3 specifications for flat head screw geometry, including head diameter (0.138"), length (3/16"), and drive size (0.035" hex). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting sustainable procurement practices.