Knockout Covers | McMaster-Carr

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System of Measurement

Knockout Trade Size

Knockout Diameter

7/8" to 1 9/32"

1 3/8" to 1 3/4"

Material

Stainless Steel

Environment

Food and Beverage

Finish

Enclosure Rating

Pipe Size

Color

Shape

Attachment Type

Thread Size

Thread Type

Panel Thickness

Hole Diameter

For Push-Button Hole Size

Width

For Use With

Push-Button Holes

REACH

RoHS

For Hole Type

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Performance

Chemical Resistant

Corrosion Resistant

Certification

C-UL Recognized Component

UL Recognized Component

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79 Products

Electrical Enclosure Plugs

Knockout Plugs for Enclosures

Knockout Plugs for Enclosures

Guard electrical components from debris and pesky critters

Watertight Knockout Plugs for Enclosures

Watertight Knockout Plugs for Enclosures

Don't let water sneak into unused conduit knockouts

Watertight Push-Button Plugs for Enclosures

Watertight Push-Button Plugs for Enclosures

Seal unused push-button switch holes so water won't sneak in

Threaded Plugs for Enclosures

Threaded Plugs for Enclosures

Twist in unused threaded holes for a tighter hold than clamp-on and snap-in plugs

Watertight Threaded Plugs for Enclosures

Watertight Threaded Plugs for Enclosures

Screw into unused threaded holes to block out water

Sanitary Threaded Plugs for Enclosures

Sanitary Threaded Plugs for Enclosures

Super smooth with round edges to prevent bacteria buildup

Watertight Square Plugs for Enclosures

Watertight Square Plugs for Enclosures

Seal unused square holes on the bottom of enclosures to block out water

Other Products

Circuit Breaker Box Filler Plates

Circuit Breaker Box Filler Plates

Conceal live electrical components in circuit breaker boxes to prevent injury and damage

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)