3/8″ Plastic Button Hole Plug

Easy-to-Use Plastic Hole Filler for Panels and Project Boxes

The 3/8″ plastic button hole plug is the perfect solution for covering unused round holes or knockouts in panels, project boxes, and electrical enclosures. Made from durable plastic, this snap-in hole plug installs easily without tools or hardware simply press it into your 3/8 inch hole for a secure fit.

Quick Installation No Tools Required

Featuring a convenient press-fit, snap-in design, this plastic hole filler plug provides a fast and clean way to close off open holes. The Hillman 58181-A plug stays firmly in place and eliminates exposed openings that can collect dust or create safety hazards.

Versatile Uses and Dependable Fit

This round plastic knockout plug is perfect for:

• Hiding unused switch or cable holes on electronics
• Filling 3/8 inch holes in automotive or appliance panels
• Covering openings in hobby and DIY project boxes
• Providing a finished look to metal or plastic panels

It fits standard 3/8″ diameter holes and is commonly used as a plastic panel hole cover plug or plastic button plug for general repairs and upgrades.

Product Features & Technical Data

• Material: Durable plastic for long-lasting use
• Color: Black
• Fits Hole Size: 3/8″ (0.375 inch) diameter
• Installation: Snap-in / press-fit no hardware or tools required
• Manufacturer: Hillman
• Manufacturer Part Number: 58181-A
• Quantity: 1 piece per pack (Two plugs shown for reference)

Clean, Finished Results for Your Projects

Enjoy a neat appearance and protect your enclosures or panels using these plastic snap-in hole plugs. Perfect for home improvement, electronics projects, and repairs, this versatile 3/8 inch round plastic hole plug is a must-have for any toolbox.