S-96640A254 5/16"-18 x 2" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments
• Exceptional tensile strength of 80,000 psi ensures reliable performance in heavy-duty applications
• Precise Class 2A thread fit provides smooth installation and secure fastening with reduced risk of cross-threading
• Full threading along 2" length offers maximum grip and uniform load distribution across connected materials
• Standard 82° countersink angle enables flush mounting for clean, professional finishes in metal and wood assemblies
• Phillips drive design allows for efficient installation with common tools while minimizing cam-out risks
• Compliance with major industry standards including ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental responsibility

Professional Applications & Engineering Value

These 5/16"-18 UNC flat head screws deliver critical engineering advantages for industrial applications where corrosion resistance and structural integrity are paramount. The Black-Oxide 18-8 Stainless Steel construction provides enhanced protection against oxidation and chemical exposure, making them ideal for machinery, outdoor equipment, and marine applications. The combination of 80,000 psi tensile strength and Rockwell B80 hardness ensures reliable performance under vibration and heavy loads. The fully threaded design with coarse UNC threading enables rapid installation and superior holding power in various materials, while the flat head profile with 82° countersink creates seamless, flush surfaces that prevent snagging and improve safety in assembled components.

Specification Summary & Compliance

This flat head Phillips screw features precise Class 2A thread fit according to UNC standards, ensuring consistent engagement and reliable fastening performance. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and quality. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, confirming environmental responsibility and safety standards. With 2" length in the inch measurement system and standardized 82° countersink angle, these screws deliver predictable performance across industrial applications requiring durable, corrosion-resistant fastening solutions.