S-92210A446 1/2"-13 x 3 3/4" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional load-bearing capacity with 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under stress
• Precise thread engagement with Class 3A fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Optimal flush mounting with standard flat head profile and 82° countersink angle for seamless surface integration
• High-torque installation capability through 5/16" hex drive, enabling efficient assembly with standard tools
• Full-length threading providing maximum grip along the entire 3 3/4" length for superior holding power
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations (RoHS 3, REACH)

Professional Applications & Engineering Value

These 1/2"-13 UNC flat head screws deliver critical engineering solutions for industrial applications requiring both strength and corrosion resistance. The 18-8 stainless steel composition with passivated finish provides exceptional protection against chemical exposure and atmospheric corrosion, making them ideal for marine equipment, food processing machinery, and outdoor structural applications. The Class 3A thread fit combined with UNC coarse threading ensures rapid installation and superior vibration resistance in heavy machinery and construction projects. The 82° countersink angle and flat head design create flush surfaces that eliminate protrusions in precision assemblies, while the hex drive configuration allows for high-torque installation in confined spaces. These fully threaded screws maintain consistent clamping force across the entire fastener length, preventing joint loosening in high-vibration environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit and UNC coarse thread specifications (1/2"-13). Complies with ASME B18.3 manufacturing standards for flat head screw geometry and performance requirements. Meets environmental compliance standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. Features include 82° countersink angle, 0.5" thread diameter, and full threading along the 3 3/4" length with right-hand thread direction.