3/4" Metal Button Hole Plug – Easy Snap-In Cover for Panels & Project Boxes

Secure and Simple 3/4 Inch Metal Hole Plug

The 3/4" metal button hole plug is designed to cover unused round holes or electrical knockouts in panels, project boxes, and electrical enclosures. This metal hole plug offers a quick and clean solution for filling gaps, protecting sensitive components, or improving your project's appearance.

Fast, Tool-Free Installation

Featuring a press-fit, snap-in design, this button hole plug installs easily—no tools or mounting hardware required. Just press the plug into the 3/4 inch hole and it securely stays in place.

Durable Nickel-Plated Steel Construction

Made by Hillman (manufacturer part number: 58146-C), this metal hole filler plug is crafted from sturdy steel with an attractive nickel-plated finish. The nickel plating resists corrosion and gives a clean, professional look—perfect for electronics projects, DIY repairs, or home upgrades.

Technical Details & Features

• Fits standard 3/4" diameter holes (approx. 0.75" or 19mm)
• Material: Nickel-plated steel for corrosion resistance
• Press-fit / snap-in installation—no tools needed
• Flush, low-profile cover design
• Quantity: 1 x 3/4" metal button hole plug per purchase
• Manufacturer: Hillman
• Manufacturer part number: 58146-C

Where to Use This 3/4" Metal Button Hole Plug?

Use this versatile panel hole cover for blanking unused electrical knockouts, project boxes, switch panels, automotive dash panels, or metal cabinets. Great for electronics hobbyists and home improvement projects needing an easy, reliable hole cover.