S-95233A250 1/4"-20 x 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with PTFE-coated 18-8 stainless steel construction, ideal for harsh industrial environments
• Superior mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable, long-term performance
• Enhanced holding power from fully threaded UNC coarse threads that resist loosening under vibration
• Broad compatibility with Class 2A thread fit ensuring precise engagement with standard nuts and tapped holes
• Easy installation using standard No. 3 Phillips drive for efficient assembly with common tools
• Regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial applications
• Optimized head design with pan-style rounded profile providing consistent clamping force and reduced surface damage

Professional Applications & Engineering Value

These PTFE-coated stainless steel pan head screws deliver critical protection against chemical exposure and galvanic corrosion in demanding applications like food processing equipment, marine hardware, and chemical plant assemblies. The 18-8 stainless steel core maintains structural integrity while the PTFE coating creates a non-stick, low-friction surface that prevents thread galling and simplifies maintenance. With fully threaded UNC coarse threads, these fasteners provide maximum thread engagement in both metallic and composite materials, eliminating the need for precise length calculations. The combination of 70,000 psi tensile strength and Class 2A thread fit ensures reliable performance in high-vibration environments where fastener integrity is paramount for operational safety and reduced downtime.

Specification Summary & Compliance

This 1/4"-20 x 1/2" pan head screw features precision UNC coarse threads with Class 2A thread fit per ASME B18.6.3 specifications. Manufacturing complies with ASME B18.6.3 standards for dimensional accuracy and mechanical properties. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental responsibility and workplace safety in global supply chains.