1/4"-20 X 7/16" Machine Screws | Undercut Flat Head | Slotted Drive | Steel Zinc Plated (5000/Pkg.)

Machine Screws Slotted Undercut Flat Zinc Plated 1/4-20 x 7/16 is a sturdy, precision-engineered fastener designed for secure mounting in tapped holes or through-holes. With a slotted drive and a countersunk, undercut flat head, these machine screws deliver a flush, professional finish in a variety of metal and plastic assemblies.

Constructed from zinc-plated steel, they offer reliable corrosion resistance for indoor and light outdoor applications. The 1/4-20 UNC thread is a common size, making this fastener compatible with a wide range of hardware and fittings.

Key features

• Drive type: Slotted — compatible with standard flat-head screwdrivers.
• Head style: Flat, countersunk with undercut for a flush seating.
• Thread size: 1/4-20 UNC.
• Length: 7/16 in (11.1 mm).
• Material & Finish: Zinc-plated steel for corrosion resistance.
• Applications: Ideal for appliances, electronics enclosures, cabinetry, and general mechanical assemblies.

Specifications

• Thread: 1/4-20 UNC
• Length: 7/16 in
• Drive: Slotted
• Head: Undercut flat (countersunk) head
• Material/Finish: Zinc-plated steel

For best results, ensure mating holes are properly tapped or drilled to accept a 1/4-20 screw. Use a standard screwdriver to achieve the desired seating, and avoid overtightening to preserve the undercut head's flush appearance.