S-90585A991 10-32 x 3/4" 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 and 10-32 UNF fine threading ensures secure, vibration-resistant connections in critical assemblies
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under heavy loads
• Optimized flush mounting with standard 82° flat head profile and fully threaded design for seamless integration and uniform stress distribution
• Easy installation and removal using standard 1/8" hex drive, reducing assembly time and tool wear
• Regulatory compliance assurance meeting ASME B18.3 standards and RoHS 3/REACH directives for global industrial use
• Consistent dimensional accuracy with controlled head diameter and height tolerances for repeatable fit in precision applications

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 critical. The combination of UNF fine threading with Class 3A thread fit provides superior vibration resistance in machinery, automotive, and marine applications, preventing loosening under dynamic loads. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, making these screws ideal for chemical processing, offshore equipment, and food processing machinery where exposure to moisture and aggressive substances is common. The fully threaded design ensures maximum grip length and load distribution, while the flat head configuration with 82° countersink allows for flush mounting in precision assemblies where protrusion isn't acceptable.

Specification Summary & Compliance

These 10-32 UNF flat head screws feature precise Class 3A thread fit with controlled dimensional tolerances including head diameter (0.411") and head height (0.127"). Manufacturing complies with ASME B18.3 specifications for consistent quality and interoperability. The products are fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental and safety standards for industrial fasteners.