Value Collection W57780PS 1/4-20 X 1 in Flat Head Phillips Screw

Product Description

The VALUE COLLECTION W57780PS is a 1/4-20 x 1 inch overall length flat head Phillips machine screw manufactured from Grade 316 stainless steel with a bright, uncoated finish. This fastener uses Unified National Coarse (UNC) threading and a countersunk flat head profile, making it suitable for flush-mount installations where a clean surface finish is required. Grade 316 stainless steel provides superior corrosion resistance compared to Grade 304, particularly in chloride-rich or marine environments. Tradespeople and maintenance professionals working in wet, coastal, or chemically exposed environments commonly specify this grade for structural and mechanical fastening applications.

This screw is used in a wide range of commercial and industrial applications where corrosion resistance and flush-seating are required. Typical installations include panel mounting, equipment enclosures, HVAC components, plumbing fixtures, and marine hardware. The Phillips drive accepts standard Phillips screwdrivers and bits. The 1-inch overall length is also the length under head, making specification straightforward for through-hole and tapped-hole applications. These fasteners are ordered in multiples of 10.

Key Features

• Grade 316 stainless steel for enhanced resistance to corrosion, salt spray, and chemical exposure
• Flat countersunk head profile allows flush or recessed installation in mating surfaces
• 1/4-20 UNC thread for broad compatibility with standard tapped holes and hardware
• Bright, uncoated finish preserves dimensional tolerances and is suitable for food-service or sanitary applications
• Phillips drive accepts common Phillips bits and hand tools
• No washer required — washer style is without washer

Compatibility

Designed as a standard 1/4-20 UNC machine screw for use in pre-tapped holes or with 1/4-20 nuts in mechanical assemblies, equipment panels, and fixtures requiring Grade 316 stainless steel fasteners.

Installation Notes

Install using a Phillips screwdriver or appropriate Phillips bit in a power driver set to a controlled torque setting to avoid overdriving the countersunk head. Ensure the mating material is pre-tapped to 1/4-20 UNC or use a compatible nut and through-hole configuration. When installing into dissimilar metals, be aware of potential galvanic corrosion and use appropriate isolation methods as required by the application. Power down or de-energize any nearby electrical components before working in enclosures or panels.