S-91781A257 10-24 x 3" 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 for extended service life in harsh environments
• High-strength performance delivering 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing applications
• Precise installation and alignment with Class 2A thread fit and standard flat head profile ensuring flush mounting
• Optimized for industrial efficiency featuring coarse UNC threads and slotted drive for faster assembly and disassembly
• Enhanced structural integrity through partial threading design that concentrates strength where needed most
• Wide compatibility with 82° countersink angle conforming to standard recessed applications
• Regulatory confidence with full compliance to ASME B18.6.3, RoHS 3, and REACH standards

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 10-24 UNC flat head screws provide critical solutions where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition with passivated finish creates a protective barrier against chemical exposure and atmospheric corrosion, significantly extending service life in manufacturing equipment, marine hardware, and food processing machinery. The partially threaded design concentrates thread engagement at critical stress points while maintaining shank strength, preventing thread stripping in high-vibration applications. With coarse UNC threading and slotted drive, these fasteners enable rapid installation in production line settings while the 82° countersink angle ensures seamless flush mounting in precision assemblies. The combination of 80,000 psi tensile strength and Rockwell B80 hardness provides reliable performance in heavy-duty mechanical systems where fastener failure is not an option.

Specification Summary & Compliance

These flat head screws maintain precise Class 2A thread fit tolerances with 10-24 UNC coarse threads and right-hand thread direction. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring restricted substance adherence for global industrial applications.