S-91735A546 1/4"-20 x 1 1/2" ASME B18.6.3 Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh chemical and marine environments
• Exceptional holding power from fully threaded UNC coarse pattern and 80,000 PSI tensile strength for reliable fastening in demanding applications
• Optimized drive engagement with No. 3 Phillips drive style providing secure torque transmission and reduced cam-out risk
• Enhanced durability with Rockwell B85 hardness maintaining structural integrity under vibration and load stress
• Precision thread fit with Class 2A tolerance ensuring consistent engagement and easy assembly in industrial settings
• Broad compliance coverage meeting ASME B18.6.3 specifications plus RoHS 3 and REACH environmental standards
• Versatile pan head design with rounded profile offering balanced bearing surface and clean aesthetic appearance

Professional Applications & Engineering Value

Engineered for challenging environments where corrosion resistance and structural reliability are paramount, these 316 stainless steel pan head screws deliver exceptional performance in chemical processing, marine hardware, and food-grade equipment. The passivated finish creates an additional protective oxide layer that significantly extends service life in acidic or saline conditions. With fully threaded UNC coarse pattern and Class 2A thread fit, these Phillips drive screws provide rapid installation and superior pull-out resistance in sheet metal, plastic components, and machinery assemblies. The combination of 80,000 PSI tensile strength and Rockwell B85 hardness ensures these industrial screws maintain clamp load under vibration, making them ideal for OEM manufacturing and maintenance applications requiring dependable fastening solutions.

Specification Summary & Compliance

This 1/4"-20 x 1-1/2" pan head screw features precision UNC coarse threads with Class 2A thread fit tolerance for consistent engagement. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components. Right-hand threading and fully threaded design provide complete fastening capability across the entire 1-1/2" length.