S-91735A530 1/4"-20 x 1/4" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 stainless steel construction and passivated finish for long-term reliability in harsh environments
• Superior mechanical strength with 80,000 psi tensile strength and Rockwell B85 hardness to withstand demanding applications
• Optimized thread engagement through Class 2A coarse UNC threads ensuring secure fastening and vibration resistance
• Efficient installation with No. 3 Phillips drive and pan head design providing excellent torque transmission and driver stability
• Full threading coverage along the entire 1/4" length for maximum grip strength and uniform load distribution
• Industry compliance assurance meeting ASME B18.6.3 specifications for dimensional accuracy and performance standards
• Environmental regulation compliance with RoHS 3 and REACH adherence for safe use in regulated industries

Professional Applications & Engineering Value

These 316 stainless steel pan head screws with 1/4-20 UNC coarse threading provide critical solutions for industrial applications where corrosion resistance and mechanical reliability are paramount. The combination of passivated finish and marine-grade 316 stainless steel ensures exceptional performance in chemical processing, marine environments, and food processing equipment where exposure to moisture and corrosive agents would compromise ordinary fasteners. The Class 2A thread fit guarantees consistent engagement while accommodating minor variations in mating components, reducing assembly time and preventing cross-threading issues. The pan head design with Phillips No. 3 drive offers optimal torque transfer for efficient installation in automated assembly lines or maintenance applications, making these fully threaded screws ideal for securing panels, machinery components, and structural elements in demanding industrial settings.

Specification Summary & Compliance

This 1/4-20 UNC screw features precise Class 2A thread fit with coarse thread spacing, manufactured to exacting ASME B18.6.3 dimensional standards. The fastener maintains compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. With a head diameter of 0.492" and overall length of 1/4", these industrial screws deliver consistent performance meeting recognized engineering specifications for reliable operation across various applications.