S-91500A157 6-32 x 1 1/2" 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
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B80 hardness for reliable performance under load
• Precision thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Full-length threading provides maximum grip and load distribution across the entire fastener length
• Standard flat head design with 82° countersink angle for flush mounting and clean aesthetic finish
• No. 2 Phillips drive offers familiar, efficient installation with common tools while resisting cam-out
• Regulatory compliance meets ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These 316 stainless steel flat head screws deliver critical performance advantages for demanding industrial applications where corrosion resistance and mechanical integrity are paramount. The combination of fully threaded UNC coarse threads and Class 2A thread fit ensures reliable fastening in materials prone to vibration loosening, while the passivated finish provides an additional protective layer against chemical exposure and atmospheric corrosion. Ideal for marine equipment, chemical processing installations, food processing machinery, and outdoor infrastructure, these flat head Phillips screws maintain their structural integrity in temperature-variable environments. The standardized 82° countersink angle and precise 1-1/2" length enable seamless integration into designed assemblies, providing flush surface finishes without protrusion concerns.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerance for consistent performance. Features 6-32 UNC coarse threads with right-hand direction and standard flat head profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across regulated industries. Mechanical properties include 70,000 psi tensile strength and Rockwell B80 hardness for dependable load-bearing capacity.