S-90604A332 1/4"-20 x 3" ASME B18.6.3 Stainless Steel Pan Head Combination Phillips/Slotted Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction with passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength with 100,000 PSI tensile strength and Rockwell B100 hardness for heavy-duty applications
• Versatile installation options with combined Phillips/Slotted drive (No. 3 size) accommodating various tool types
• Reliable thread engagement through fully threaded UNC coarse pattern with Class 2A fit for secure fastening
• Optimized head design featuring rounded pan profile for reduced surface protrusion and improved aesthetics
• Industry compliance assurance meeting ASME B18.6.3 specifications for dimensional accuracy and performance
• Environmental responsibility with RoHS 3 and REACH compliance for sustainable manufacturing practices

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 18-8 stainless steel rounded head screws deliver exceptional performance where corrosion resistance and structural integrity are paramount. The passivated finish provides enhanced protection against chemical exposure and oxidation, making them ideal for marine, food processing, and chemical plant applications. The combination of Phillips/Slotted drive offers installation flexibility across different assembly scenarios, while the fully threaded UNC coarse pattern ensures rapid installation and superior holding power in various materials. With 100,000 PSI tensile strength and standardized dimensions per ASME B18.6.3, these screws provide reliable, long-term fastening solutions for machinery, equipment manufacturing, and structural assemblies where vibration resistance and durability are critical requirements.

Specification Summary & Compliance

This 1/4"-20 x 3" rounded head screw features precision Class 2A thread fit with UNC coarse thread spacing, manufactured to exacting ASME B18.6.3 dimensional standards. The product maintains full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. Manufacturing specifications include fully threaded design with 0.25" thread diameter, 0.492" head diameter, and standardized pan head profile for consistent performance across industrial applications.