S-90585A033 12-24 x 1/2" Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh chemical and marine environments
• Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant fastening in critical assemblies
• Enhanced durability from 70,000 psi tensile strength and Rockwell B55 hardness for long-term performance under load
• Optimized flush installation with standard flat head profile and 82° countersink angle for smooth, secure surface mounting
• Easy installation and removal using hex drive design that prevents cam-out and allows high torque application
• Extended service life through passivated finish that provides an additional protective oxide layer against corrosion
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing

Professional Applications & Engineering Value

These 316 stainless steel flat head screws deliver exceptional performance in demanding industrial settings where corrosion resistance and mechanical reliability are paramount. The UNC coarse threading with Class 3A precision fit ensures secure fastening in materials prone to vibration loosening, while the fully threaded design provides maximum grip length for superior holding power. The passivated finish significantly enhances the natural corrosion resistance of 316 stainless steel, making these screws ideal for chemical processing equipment, marine hardware, food processing machinery, and outdoor applications exposed to weather elements. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures these fasteners maintain structural integrity under sustained mechanical stress, while the hex drive configuration allows for efficient installation in confined spaces with standard tools.

Specification Summary & Compliance

These flat head screws feature precise dimensional control with Class 3A thread fit per UNC standards, ensuring tight tolerances for reliable assembly. Manufacturing conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, guaranteeing environmental responsibility and workplace safety. The 82° countersink angle matches standard chamfered holes, while the hex drive design provides secure tool engagement. Thread specifications include 12-24 UNC coarse spacing with right-hand direction and fully threaded configuration for maximum versatility across industrial applications.