S-91771A923 0-80 x 3/8" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with passivated 18-8 stainless steel construction for long-term reliability in harsh environments
• Superior holding power with 80,000 PSI tensile strength and Rockwell B80 hardness for demanding industrial applications
• Precise thread engagement through Class 2A thread fit and UNF fine threading for secure, vibration-resistant connections
• Efficient installation with Phillips No. 0 drive and standard flat head profile that sits flush with surfaces
• Optimized countersinking with 100° angle for smooth, flush mounting in various materials
• Full threading coverage across the 3/8" length for maximum grip and load distribution
• Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for quality and safety

Professional Applications & Engineering Value

This 0-80 UNF flat head screw delivers critical performance advantages for precision assemblies where space constraints and material compatibility are paramount. The passivated 18-8 stainless steel construction provides excellent resistance to oxidation and chemical exposure, making it ideal for electronics, instrumentation, and marine applications. The fine UNF threading and Class 2A thread fit ensure tight tolerances and vibration resistance in delicate mechanisms, while the Phillips No. 0 drive enables controlled torque application during installation. The combination of 80,000 PSI tensile strength and fully threaded design creates reliable fastening solutions for thin materials and critical joints where failure is not an option.

Specification Summary & Compliance

Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerances for precision alignment. The UNF 0-80 fine thread configuration ensures secure fastening in applications requiring fine adjustment capabilities. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations guarantees safe use across various industries. The screw features standard 100° countersink angle and right-hand thread direction for compatibility with standard tooling and installation practices.