S-91781A191 8-32 x 5/16" ASME B18.6.3 Stainless Steel Slotted Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments
• Exceptional mechanical strength delivering 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Precision thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Full threading design providing maximum grip length and uniform stress distribution across applications
• Standard 82° countersink angle enabling flush mounting in precision-machined components
• Slotted drive compatibility for straightforward installation with common hand tools
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards

Professional Applications & Engineering Value

These 8-32 UNC flat head slotted screws deliver critical performance advantages in industrial settings where corrosion resistance and mechanical reliability are paramount. The 18-8 stainless steel composition combined with passivated surface treatment creates a protective oxide layer that significantly extends service life in moisture-prone environments. The coarse UNC thread profile with Class 2A tolerance ensures rapid installation and secure fastening in materials prone to vibration-induced loosening. Engineering teams specify these fully threaded fasteners for machinery assembly, electronic enclosures, and structural components where the flat head design provides aerodynamic surfaces and prevents snagging. The combination of 80,000 psi tensile strength and standardized dimensions makes these screws ideal for replacement parts and OEM equipment requiring ASME B18.6.3 compliance.

Specification Summary & Compliance

This 8-32 UNC flat head slotted screw features precise Class 2A thread fit tolerances with right-hand threading and standardized 82° countersink angle. Manufacturing strictly adheres to ASME B18.6.3 dimensional specifications, ensuring interchangeability across industrial applications. The product demonstrates full compliance with RoHS 3 (2015/863/EU) hazardous substance restrictions and REACH (EC 1907/2006) environmental regulations, validating its suitability for global supply chains and environmentally conscious manufacturing operations.