S-91771A897 3/8"-16 x 3/4" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for demanding applications
• Precision thread engagement through Class 2A thread fit and UNC coarse threading, providing secure fastening and vibration resistance
• Optimized flush mounting with undercut flat head profile and 82° countersink angle for seamless surface integration
• Enhanced drive stability with Phillips No. 4 drive style, reducing cam-out during installation
• Full-threaded design maximizing grip length and load distribution across the entire 3/4" length
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations for global industrial use

Professional Applications & Engineering Value

This 3/8"-16 UNC flat head screw delivers critical engineering advantages for industrial assembly where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making it ideal for marine, food processing, and outdoor equipment applications. The undercut flat head profile with 82° countersink angle ensures flush mounting without protrusion, preventing snagging while maintaining aerodynamic or hygienic surfaces. The coarse UNC threading and Class 2A thread fit provide rapid installation and reliable holding power in various materials, from metals to composites. With full threading along the entire 3/4" length, this Phillips drive screw offers maximum thread engagement for superior load distribution in high-stress applications.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specifications. Complies with ASME B18.6.3 mechanical standards for dimensional consistency and performance. Meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety. Features include 82° countersink angle, fully threaded design, and right-hand thread direction for standard industrial applications.