Value Collection W57786PS 1/4-20 X 1-1/4 in Flat Head Screw

Product Description

The VALUE COLLECTION W57786PS is a 1/4-20 flat head Phillips machine screw with a 1-1/4 inch overall length, manufactured from Grade 316 stainless steel with a bright, uncoated finish. This screw is designed for use in applications requiring corrosion resistance and a flush-mount fastening solution. The flat head profile allows the fastener to sit flush with or below the mating surface when driven into a countersunk hole. Grade 316 stainless steel offers enhanced resistance to chlorides and marine environments compared to Grade 304, making it a reliable choice in demanding service conditions.

This fastener is suited for general mechanical assembly, maintenance, and fabrication work across industrial, marine, and commercial settings. The unified national coarse (UNC) thread form provides reliable engagement in standard tapped holes. Trades including HVAC technicians, plumbers, electricians, and general maintenance professionals use flat head machine screws like this in panel mounting, equipment enclosures, and structural brackets where a flush surface is required.

Key Features

• Grade 316 stainless steel construction for strong corrosion resistance, including chloride and saltwater environments
• Flat head profile enables flush or countersunk installation
• Phillips drive for compatibility with common screwdrivers and power drivers
• UNC thread form for use in standard 1/4-20 tapped holes
• Bright, uncoated finish maintains dimensional accuracy and clean appearance
• Lightweight at approximately 0.007 pounds per fastener

Compatibility

Designed as a standard 1/4-20 UNC flat head machine screw for use in any application requiring a countersunk Phillips-drive fastener with Grade 316 stainless steel material properties.

Installation Notes

A licensed technician or qualified tradesperson should ensure the mating material is properly countersunk to the correct angle before driving this screw flush. Use a Phillips screwdriver or bit sized for the fastener to avoid cam-out and head damage. Do not overtighten, as stainless steel fasteners are susceptible to galling if driven without proper lubrication or technique. Verify thread engagement depth meets the requirements of the assembly specification before torquing to final position.