S-91802A378 12-24 x 1 1/4" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 PSI tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Precision thread engagement through Class 2A UNC coarse threads ensures secure fastening and vibration resistance
• Optimized drive efficiency with Phillips No. 3 drive for reduced cam-out and consistent installation torque
• Flush mounting capability with standard oval head profile and 82° countersink angle for clean, professional finishes
• Full threading coverage across the 1-1/4" length provides maximum grip depth in various material thicknesses
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards (RoHS 3/REACH)

Professional Applications & Engineering Value

These 12-24 UNC Oval Head Phillips Flat Head Screws deliver critical performance advantages for industrial assembly applications where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides excellent protection against oxidation and chemical exposure, making them ideal for machinery, electrical enclosures, and outdoor equipment. The coarse thread spacing and Class 2A thread fit ensure rapid installation and reliable holding power in metals, plastics, and composite materials. The oval head design with standard profile allows for flush mounting while the Phillips drive offers familiar, efficient installation with standard tools. These fully threaded fasteners maintain consistent 80,000 PSI tensile strength throughout their length, providing uniform stress distribution and preventing joint failure in high-vibration environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread specifications (12-24 thread size, 0.216" diameter). Complies with ASME B18.6.3 mechanical and dimensional requirements. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) standards. Features right-hand threading, fully threaded 1-1/4" length, and standardized oval head geometry with 82° countersink angle for consistent performance across industrial applications.