S-91781A294 12-24 x 3/4" 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 industrial 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 fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized flush mounting featuring standard 82° countersink angle for seamless surface integration and reduced snagging
• Full-threaded design providing maximum grip length and uniform stress distribution across the entire fastener
• Slotted drive compatibility allowing easy installation with standard tools while maintaining head integrity
• Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for quality and environmental safety

Professional Applications & Engineering Value

These 12-24 UNC flat head screws deliver critical performance advantages in demanding applications where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition combined with passivated finish creates a protective oxide layer that significantly extends service life in moisture-prone environments. The Class 2A thread fit and coarse threading provide excellent engagement in both metallic and composite materials, reducing cross-threading risks during assembly. The 82° countersink angle ensures proper seating in standardized chamfers, creating smooth surfaces essential for aerospace, marine, and food processing equipment where protrusions could compromise safety or hygiene. With full threading maximizing contact area, these screws distribute mechanical stresses evenly, preventing localized failure points in critical joints.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit per UNC specifications and 82° countersink angle as defined in ASME B18.6.3. These flat head screws maintain strict compliance with ASME B18.6.3 for mechanical properties and dimensional accuracy, while meeting RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for restricted substances. The right-hand thread direction with coarse spacing ensures compatibility with standard industrial components and fastening practices.