S-91500A334 12-24 x 1/2" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction and passivated surface treatment
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Precision thread engagement with Class 2A fit and UNC coarse threads ensuring secure fastening and vibration resistance
• Streamlined flush mounting with standard 82° countersink angle and flat head design for seamless surface integration
• Wide industrial compatibility through full compliance with ASME B18.6.3 dimensional standards and global regulatory requirements
• Enhanced installation efficiency with Phillips No. 3 drive providing positive torque transfer during assembly
• Maximum thread utilization through fully threaded design for consistent clamping force along the entire fastener length

Professional Applications & Engineering Value

This 316 stainless steel flat head screw delivers critical performance advantages in demanding industrial environments where corrosion resistance and mechanical reliability are paramount. The combination of UNC coarse threads and Class 2A thread fit provides excellent engagement in various materials while resisting vibration-induced loosening. The passivated finish significantly enhances the natural corrosion resistance of 316 stainless steel, making these Phillips drive screws ideal for chemical processing equipment, marine applications, and food processing machinery where exposure to moisture and aggressive substances is common. The 82° countersink angle and flat head profile ensure flush mounting in precision assemblies, while the fully threaded design maximizes load distribution across the entire 1/2" length.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 dimensional specifications with Class 2A thread fit tolerances for consistent performance. Features 12-24 UNC coarse threads with right-hand orientation and standard flat head profile. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial applications. Mechanical properties include 70,000 psi tensile strength and Rockwell B80 hardness for dependable performance in demanding fastening scenarios.