S-91802A381 12-24 x 1 1/2" 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
• Optimized installation efficiency through Phillips No. 3 drive and fully threaded coarse spacing for rapid assembly
• Precise flush mounting capability with standard oval head profile and 82° countersink angle for seamless surface integration
• Consistent threading accuracy with Class 2A thread fit ensuring secure fastening and vibration resistance
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards (RoHS 3/REACH)
• Versatile 1-1/2" length providing ample engagement for medium-to-heavy duty fastening applications

Professional Applications & Engineering Value

These 12-24 UNC oval head Phillips flat head screws deliver critical engineering advantages in demanding applications. The passivated 18-8 stainless steel construction provides inherent corrosion resistance, making them ideal for outdoor equipment, marine components, and chemical processing facilities where moisture and corrosive elements are concerns. The fully threaded coarse spacing ensures maximum grip strength in wood, plastic, and metal substrates, while the oval head design with 82° countersink creates a flush finish that eliminates snagging hazards in machinery and consumer products. With their 80,000 psi tensile strength, these fasteners maintain structural integrity under vibration and dynamic loads in automotive assemblies, industrial machinery, and construction frameworks.

Specification Summary & Compliance

These flat head screws feature precise 12-24 UNC coarse threads with Class 2A thread fit tolerances, ensuring consistent mating with corresponding nuts and tapped holes. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. The passivated surface treatment on 18-8 stainless steel enhances corrosion protection while maintaining the material's natural durability.