Square Caps | McMaster-Carr

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	For Shape For Shape


Square	Rectangle

	System of Measurement System of Measurement

	For Outside Width For Outside Width

	Head Width Head Width

	For Inside Width For Inside Width

0.34"-0.43"

0.37"-0.4"

0.46"-0.55"

0.584"-0.68"

0.59"-0.68"

0.6"-0.67"

0.709"-0.805"

0.71"-0.8"

0.72"-0.84"

0.73"-0.83"

0.83"-0.93"

0.84"-0.93"

0.84"-0.95"

0.85"-0.92"

0.96"-1.05"

1.02"-1.1"

1.02"-1.13"

1.08"-1.18"

1.1"-1.17"

1.11"-1.2"

1.21"-1.3"

1.23"-1.33"

1.24"-1.33"

1.29"-1.34"

1.29"-1.37"

1.33"-1.43"

1.35"-1.42"

1.42"-1.5"

1.49"-1.58"

1.59"-1.68"

1.73"-1.83"

1.74"-1.83"

1.84"-1.93"

1.85"-1.92"

1.99"-2.08"

2.09"-2.23"

2.24"-2.33"

2.37"-2.45"

2.42"-2.58"

2.49"-2.64"

2.59"-2.68"

2.6"-2.67"

2.76"-2.84"

3.15"-3.26"

3.33"-3.43"

3.44"-3.62"

3.52"-3.76"

3.78"-3.86"

4.34"-4.51"

4.48"-4.73"

5.48"-5.73"

22-23mm

24-27mm

30-32mm

32-35mm

42-46mm

	For Inside Length For Inside Length

0.37"-0.4"

0.46"-0.55"

0.584"-0.68"

0.59"-0.68"

0.6"-0.67"

0.709"-0.805"

0.71"-0.8"

0.72"-0.84"

0.73"-0.83"

0.83"-0.93"

0.85"-0.92"

0.87"-0.9"

0.96"-1.05"

1.02"-1.1"

1.08"-1.18"

1.09"-1.18"

1.1"-1.17"

1.11"-1.2"

1.21"-1.3"

1.23"-1.33"

1.29"-1.34"

1.33"-1.43"

1.34"-1.43"

1.35"-1.42"

1.42"-1.5"

1.49"-1.58"

1.59"-1.68"

1.73"-1.83"

1.74"-1.83"

1.83"-1.95"

1.85"-1.92"

1.99"-2.08"

2.09"-2.23"

2.24"-2.33"

2.27"-2.39"

2.29"-2.37"

2.34"-2.43"

2.37"-2.45"

2.42"-2.58"

2.49"-2.64"

2.59"-2.68"

2.73"-2.83"

2.74"-2.83"

2.76"-2.84"

2.84"-2.93"

3.15"-3.26"

3.24"-3.33"

3.33"-3.43"

3.44"-3.62"

3.52"-3.76"

3.6"-3.67"

3.78"-3.86"

3.84"-3.93"

4.34"-4.51"

4.48"-4.73"

4.73"-4.83"

5.48"-5.73"

46-48mm

54-57mm

72-73mm

72-75mm

92-96mm

	Head Length Head Length

	Material Material

	Plug Type Plug Type


Snap In	Push In

	Height Height

	Color Color

	Black
	Red

	Maximum Temperature Maximum Temperature

	Inside Height Inside Height

	Cap Type Cap Type


Push On	Weld On

	For Outside Length For Outside Length

	Hardness Hardness

	Flexibility Flexibility

	For Wall Thickness For Wall Thickness

0.035"-0.083"

	Number of Openings Number of Openings

	Component Component

	Opening Length Opening Length

	For Post Width For Post Width

	For Post Depth For Post Depth

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179 Products

Plugs

Snap-In Square Plugs

Snap-In Square Plugs

Flexible ridges or straps hold these plugs in place.

Push-In Square Plugs

Push-In Square Plugs

Push these plugs into an opening and friction holds them in place.

Metal Square Plugs

Metal Square Plugs

More durable than plastic plugs, these provide the most protection from abrasion and impact. Use them to eliminate sharp edges and create a finished look on metal fence and machine-guard posts. Drive them in place with a hammer for a secure fit.

Domed Square Plugs

Domed Square Plugs

Often used on metal furniture, these plugs provide a finished look on posts and tubes. Snap them into place and their flexible ridges will provide a secure grip.

Snap-In Rectangular Plugs

Snap-In Rectangular Plugs

Flexible ridges securely hold these plugs in place and allow them to fit a range of hole sizes.

Push-In Rectangular Plugs

Push these plugs into an opening and friction holds them in place.

Ethernet Port Plugs

Ethernet Port Plugs

Shield unused RJ45 type ports on computers and other electronic equipment from debris and moisture.

Caps

Square Caps

Square Caps

Slide these flexible vinyl caps on and they conform for a snug fit.

Heavy Duty Square Caps

Heavy Duty Square Caps

Made of rigid plastic, these caps are more wear resistant than vinyl caps but not as flexible.

Rectangular Caps

Slide these flexible vinyl caps onto rectangular objects and they conform for a snug fit.

Capacitor Caps

Also known as capacitor boots, these caps protect capacitors and wire connections from damage to extend their service life. They also insulate wire terminal connections to help reduce accidental shocks.

USB Caps

Shield USB connectors from damage, contaminants, and moisture when they are not being used.

Stacking Caps and Targets

Weld these caps and targets to the ends of posts to create stackable shelving and racking systems.

Corrosion-Resistant Washdown Hole Plugs for Square Holes

Corrosion-Resistant Washdown
Hole Plugs for Square Holes

Close 2" square holes in the floor of your enclosure with these adhesive plugs.

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