S-91500A146 6-32 x 3/8" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish for extended service life in harsh environments
• High-strength performance with 70,000 psi tensile strength and Rockwell B80 hardness for reliable fastening in demanding applications
• Precision thread engagement with Class 2A UNC coarse threads ensuring consistent fit and reduced cross-threading risks
• Efficient installation through Phillips No. 2 drive design providing secure tool engagement and torque transfer
• Flush mounting capability with standard 82° countersink angle allowing smooth surface finishes in assembled products
• Full threading coverage along the 3/8" length for maximum grip strength and uniform load distribution
• Regulatory compliance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 316 stainless steel flat head machine screw delivers exceptional value in corrosive environments where material integrity is critical. The combination of passivated finish and 316 stainless steel provides superior protection against chlorides, chemicals, and marine atmospheres, making it ideal for marine equipment, chemical processing plants, and food processing machinery. The UNC coarse threads and Class 2A thread fit ensure rapid assembly with reduced galling, while the 82° countersink angle creates seamless flush mounting in precision applications. The Phillips No. 2 drive offers reliable torque transmission during installation, and the fully threaded design maximizes holding power across the entire 3/8" length, providing engineers with a versatile fastening solution that maintains performance under stress while meeting rigorous industry standards.

Specification Summary & Compliance

This flat head screw maintains Class 2A thread fit tolerance with UNC coarse threads (6-32 size) manufactured to ASME B18.6.3 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. Dimensional accuracy includes 0.262" head diameter, 0.083" head height, and standard 82° countersink angle profile for consistent performance in precision applications.