S-90585A078 3/4"-10 x 1" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel construction, ideal for harsh chemical and marine environments
• Exceptional tensile strength rated at 70,000 psi for reliable performance in heavy-duty applications
• Enhanced durability with Rockwell B55 hardness and passivated finish for extended service life
• Precision threading with Class 3A fit and UNC coarse thread profile ensuring secure, vibration-resistant fastening
• Optimized drive engagement through 1/2" hex drive design for efficient installation and removal
• Flush mounting capability with standard 82° countersink angle for smooth surface finishes
• Full regulatory compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 316 stainless steel flat head screws deliver exceptional performance in corrosive environments where chemical resistance is critical. The passivated finish provides an additional protective layer against oxidation and chemical attack, while the Class 3A thread fit ensures precise engagement and vibration resistance in high-stress assemblies. The UNC coarse threading facilitates quick installation and reliable holding power in various materials, making these hex drive screws ideal for marine equipment, chemical processing systems, and food processing machinery where corrosion resistance and structural integrity are paramount. The 82° countersink angle allows for flush mounting in precision applications requiring smooth surface profiles.

Specification Summary & Compliance

These flat head screws feature precision 3/4"-10 UNC coarse threads with Class 3A fit tolerance for optimal engagement. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance standards. The components are fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting current environmental regulations for hazardous substance restrictions. Threading is fully threaded along the 1" length, providing maximum engagement surface for superior fastening performance.