S-91772A077 2-56 x 1/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
• Optimized installation efficiency through Phillips No. 1 drive and pan head design for secure tool engagement
• Precision thread compatibility with Class 2A UNC coarse threads ensuring consistent mating with standard components
• Full-threaded design providing maximum grip length and uniform stress distribution across applications
• Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards (RoHS 3/REACH)
• Versatile industrial application with rounded head profile preventing surface damage during installation

Professional Applications & Engineering Value

Engineered for demanding industrial fastening applications, these 2-56 UNC pan head screws deliver critical performance advantages through their material and design specifications. The passivated 18-8 stainless steel construction provides exceptional resistance to oxidation and chemical exposure, significantly extending service life in moisture-prone environments. The combination of coarse threading and Class 2A thread fit ensures rapid installation with reduced cross-threading risk, while the fully threaded configuration maximizes engagement depth for superior pull-out resistance. The pan head with Phillips drive offers optimal torque transmission during assembly, making these machine screws ideal for electronics enclosures, machinery panels, and precision equipment where corrosion resistant fasteners are essential for long-term reliability.

Specification Summary & Compliance

This 1/4" length screw features precision UNC coarse threads with Class 2A tolerance per ASME B18.6.3 manufacturing standards. The fastener maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications requiring restricted substance control.