An Introduction to Stimpson Hole Plugs

Stimpson offers four Hole Plug product lines:

  • Standard Hole Plugs
  • Round Tubing Hole Plugs
  • Electrical Knockout Hole Plugs
  • Customer Specified Specialty Hole Plugs


When a hole in your product needs to be closed, filled or plugged, consider the simple, economical solution from Stimpson, maker of the world’s largest variety of Hole Plugs. Click on the image to download our Stimpson Hole Plug brochure.

Most of our Hole Plugs can be made from Brass, Steel and #1050 Carbon Steel, as your needs require. Other metals, such as Stainless Steel, are available for special situations.

With a copy of your print and/or details of your applications, we will be pleased to recommend a Standard or Special Hole Plug appropriate for your application.

With minor tooling modifications, most parts can be furnished stamped or embossed with your logo, with a different hole size in the head or with more prongs removed. Of course, plated finishes are also available.

Brief descriptions below offer a quick look at the different types of Stimpson Hole Plugs. Click on the image for more information.


Standard Hole Plugs

Stimpson offers over 200 Standard Hole Plugs, covering hole diameters from .125” to 2”. Many are in stock, ready for immediate delivery.

Round Tubing Hole Plugs

Stimpson offers Round Tubing Hole Plugs in 50 different sizes and shapes, covering a hole diameter from .218” to 1.125” with varying prong lengths and widths.

Electrical Knockout Plugs

Stimpson offers Electrical Knockout Plugs in six basic sizes: 1/2”, 3/4”, 1”, 1-1/4”, 1-1/2”, and 2”. Variations for special situations are also available.


Customer Specified Specials

Stimpson offers a wide variety of specially developed hole plugs designed to meet our customers’ special applications.