Hole Caps | McMaster-Carr

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Material

Stainless Steel

System of Measurement

ID

0.022" to 0.079"

0.025" to 0.08"

0.03" to 0.083"

3/64" to 13/64"

1/16" to 11/64"

1/16" to 13/64"

Pipe Size

Shape

Plug Connection Method

Color

Fitting Type

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Head Diameter

Panel Thickness

0.016" to 0.062"

0.016" to 0.063"

0.016" to 0.125"

0.016" to 0.25"

OD

0.053" to 0.12"

0.079" to 0.15"

0.111" to 0.177"

Pipe Material

Stainless Steel

For Use With

Abrasive Materials

Thread Size

Drive Style

External 12-Point

External Octagon

External Square

Profile Shape

Cap Type

Gender

Length

Fitting Connection

Clamp-On Barbed

Push-to-Connect Grip Ring

Quick Disconnect

RoHS

Compliant with Exemptions

Export Control Classification Number (ECCN)

DFARS Specialty Metals

REACH

Height

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5,749 Products

Protective Plugs

Tapered Plugs

One plug fits a range of diameters

Hollow Tapered Plugs

Hollow Tapered Plugs

Shaped to fit a range of diameters and compress for a snug fit

Hollow Tapered Plug Assortments

Hollow Tapered Plug Assortments

A range of sizes for plugging holes big and small

Tight-Hold Tapered Plugs

Tight-Hold Tapered Plugs

Tighten the wing nut to expand and seal

Miniature Tapered Plugs

Miniature Tapered Plugs

Block very small holes while you paint, coat, or plate parts

Pull-Tab-Release Hollow Plugs

Pull-Tab-Release Hollow Plugs

Lift and pull the tabs for easier removal than other plugs

Tapered Plugs for Food and Beverage

Tapered Plugs for Food and Beverage

Nonporous and super smooth to prevent bacteria growth

Sealing Plugs

Seal the ends of water supply lines, refrigerant lines, and HVAC compressors

Hollow Plugs

Compress for snug fit

Conductive Plugs

Conductive Plugs

Shield components from interference and drain static quickly

Antistatic Plugs

Antistatic Plugs

Prevent static buildup to protect sensitive electronics

Pull-Through Plugs

Pull-Through Plugs

Fill the entire length of through holes

Pull-Through Plugs for Countersunk Holes

Pull-Through Plugs for Countersunk Holes

Protect both the center and countersunk portions of holes with a single plug

Miniature Pull-Through Plugs

Miniature Pull-Through Plugs

Stretch through very small holes in electronic components such as circuit boards and connectors

Screw-In Plugs for Pipe and Tubing

Screw-In Plugs for Pipe and Tubing

Threaded for the most secure fit on female pipe and fittings

Vented Plugs for Pipe and Tubing

Vented Plugs for Pipe and Tubing

Tear away the tab to release pressure while coatings cure

Pull-Tab-Release Plugs

Pull-Tab-Release Plugs

Grip the tab for easier removal than other plugs

Snap-In Plugs

Press firmly into place for a tighter hold than push-in plugs

Snap-In Square Plugs

Snap-In Square Plugs

Press firmly into square holes for a tighter hold than push-in plugs

Push-In Square Plugs

Push-In Square Plugs

Close off the ends of square tubing and furniture

Metal Square Plugs

Metal Square Plugs

Tougher than plastic plugs for finishing the ends of square metal tubing

Snap-In Rectangular Plugs

Snap-In Rectangular Plugs

A tighter fit than push-in plugs for finishing the ends of posts, workstations, and furniture

Push-In Rectangular Plugs

Push-In Rectangular Plugs

Close off the ends of rectangular tubing in framing structures, furniture, and shelving

Snap-In Panel Plugs

Snap-In Panel Plugs

Close off unused wiring openings and holes in sheet metal

Metal Snap-In Panel Plugs

Metal Snap-In Panel Plugs

Toughest plugs for panels and sheet metal withstand impact and wear better than plastic

Metal Snap-In Panel Plug Assortments

Metal Snap-In Panel Plug Assortments

Fit a range of hole sizes in machine panels and sheet metal.

Locking Panel Plugs

Locking Panel Plugs

The most secure panel plugs, shaking and rattling won’t dislodge them

Vented Locking Panel Plugs

Vented Locking Panel Plugs

Release heat and fumes with plugs that stay put, even under vibration

Vented Snap-In Panel Plugs

Vented Snap-In Panel Plugs

Air circulates and permits heat and fumes to escape from machine panels

Push-In Panel Plugs

Push-In Panel Plugs

Fit tightly on both sides to fill wiring and access holes

Sealing Panel Plugs

Sealing Panel Plugs

Create a liquid-tight seal while protecting wire, cable, and tubing from sharp edges

Freeze Plugs

Permanently seal the shallow holes left during the casting process

Snap-In Plugs for Socket Head Screws

Snap-In Plugs for Socket Head Screws

Keep debris from clogging or damaging hex drives

Other Products

Electrical Enclosure Plugs

Electrical Enclosure Plugs

Block or seal holes in outlet boxes and enclosures to keep out debris, dust, and moisture

Protective Caps

Protective Caps

Protect just about anything, including pipe, flanges, screws, and posts

Grommets

Protect wire, cable, and cords from holes with sharp or rough edges

Pipe Plugs

Insert into the ends of pipe to keep out dirt and debris

Fixture Plate Plugs

Fixture Plate Plugs

Keep chips and shavings from clogging or damaging unused holes on fixture plates in milling machines

Expansion Plugs

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

Faucet Hole Covers

Faucet Hole Covers

Close off unused faucet holes intended for soap dispensers and side sprayers

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

Press-Fit Nuts

Push into drilled or punched holes to add threads to thin panels

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

Quick-Release Pin Receptacles

Quick-Release Pin Receptacles

Secure quick-release pins when you don’t have a through hole

Retaining Rings

Retaining Rings

Hold components on a shaft

Slip-On Framing and Fittings

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

Floor Drain Covers

Floor Drain Covers

Put a lid on open drains to prevent accidents and injuries

Data Port Plugs

Data Port Plugs

Keep dust, debris, and moisture out of unused computer ports

Air Conditioner Service Valve Caps

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

Clamp-On Framing and Fittings

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

Locking-Slotted Framing and Fittings

Locking-Slotted Framing and Fittings

Make platforms, bases, and other structures that stand up to more movement than T-slotted framing

Hose and Hose Fittings

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

Bore Sealing Plugs

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

Pressure Test Fittings

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

Chimney Pipe and Fittings

Chimney Pipe and Fittings

Exhaust hot air and fumes from boilers, furnaces, and stoves

Drum Plugs

Seal drum lid openings

Drum Lids

Replace the lid on your drum

Dust Covers

Stretch over drums, pails, and other objects to keep out dust and debris

Capacitor Boots

Capacitor Boots

Shield capacitors and wire connections to extend their service life and reduce accidental shocks

Drain Cleanouts

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

Press-Fit Framing and Fittings

Press-Fit Framing and Fittings

Set up temporary partitions, guards, and displays using only a hammer

Tamper-Evident Seals

Tamper-Evident Seals

Secure hasps, latches, and other connections to visibly indicate tampering

Bolt-Together Framing and Fittings

Bolt-Together Framing and Fittings

Fasten through equally spaced holes to build and adjust guards, tables, and racks

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

Heat-Shrink Tubing End Caps

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

Quick-Release Pin Retaining Caps

Quick-Release Pin Retaining Caps

Hold quick-release pins in holes that are oversized or out of round

Drum Covers

Protect drum lids from damage and rust

Conveyor Guide Mounting Rod Caps

Conveyor Guide Mounting Rod Caps

Cover the ends of conveyor guide mounting rods for a finished look

Drum Locking Rings

Drum Locking Rings

Clamp lids onto drums for a tight seal

Drum-Plug Gaskets

Drum-Plug Gaskets

Form a tighter seal in drum openings than with a drum plug alone

Drum Gaskets

Seal lids onto steel and stainless steel drums

Manhole Covers

Made of cast iron to handle high-volume foot and vehicle traffic.

Stacking Caps and Targets

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

Electrical Enclosure Drain Vents

Electrical Enclosure Drain Vents

Prevent moisture from getting trapped inside enclosures while letting air flow through

Cold-Shrink Tubing End Caps

Cold-Shrink Tubing End Caps

Seal crimped electrical connections without heat or tools to protect against moisture

Data Port Locks

Data Port Locks

Block USB or Ethernet ports from unauthorized use

Drum-Plug Caps

Access inside drums to fill them

Manhole Riser Rings

Manhole Riser Rings

Raise a manhole cover to make it level with the surface

Pipe Fittings

Form threaded, barbed, flanged, and other types of connections between lengths of pipe

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

Storm Drain Filters

Storm Drain Filters

Prevent leaves, sticks, and trash from washing down storm drains and grates

Circuit Breaker Box Filler Plates

Circuit Breaker Box Filler Plates

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

DIN Rail Caps

Guard the edges of DIN rail from damage and create a finished look

Electrical Connector Caps

Electrical Connector Caps

Protect data connectors when not in use

Electrical Connector Clips

Electrical Connector Clips

Attach to data connectors to lock them in place, repair them, or color code them

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

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