S-96653A261 1/4"-20 x 1 1/2" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with PTFE-coated 18-8 stainless steel construction, ideal for harsh chemical and moisture-rich environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high-stress conditions
• Optimized flush seating with standard 82° countersink angle and flat head design for smooth, secure surface integration
• Enhanced driving efficiency using Phillips No. 3 drive for consistent torque application and reduced cam-out risk
• Precise thread engagement with fully threaded UNC coarse spacing and Class 2A fit, ensuring vibration resistance and easy installation
• Broad regulatory compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH standards for global industrial use
• Versatile 1½" length with right-hand threading, suitable for a wide range of assembly and fastening applications

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 1/4"-20 UNC flat head screws combine PTFE-coated 18-8 stainless steel with a fully threaded coarse spacing design to address critical challenges like chemical exposure, vibration loosening, and installation efficiency. The PTFE coating provides an additional barrier against corrosive agents, while the flat head profile with 82° countersink ensures a flush fit that minimizes protrusion in machinery, enclosures, and structural assemblies. With 80,000 psi tensile strength and Rockwell B70 hardness, these screws maintain integrity in high-load applications such as electrical panels, processing equipment, and outdoor infrastructure, where material degradation and fastener failure are common concerns. The Phillips No. 3 drive further enhances usability, reducing assembly time and improving torque consistency for maintenance and production teams.

Specification Summary & Compliance

This product adheres to Class 2A thread fit and UNC coarse thread standards, manufactured in compliance with ASME B18.6.3 for dimensional accuracy and performance. It is fully certified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental and safety regulations are met for industrial distribution and use.