Hole Caps | McMaster-Carr

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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"

5/64" to 11/64"

Material

Stainless Steel

Pipe Size

Attachment Type

Worm-Drive Clamp

Fitting Type

Shape

Adjustable-Angle Elbow

Color

Profile Shape

Panel Thickness

0.016" to 0.062"

0.016" to 0.063"

0.016" to 0.125"

0.016" to 0.25"

For Use With

Abrasive Materials

Head Diameter

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

OD

0.053" to 0.12"

0.079" to 0.15"

0.111" to 0.177"

Plug Connection Method

Thread Size

Drive Style

External 12-Point

External Octagon

External Square

Height

Pipe Material

Stainless Steel

Performance

Chemical Resistant

Corrosion Resistant

Crack Resistant

Flame Resistant

Flame Retardant

High Temperature

High Visibility

Impact Resistant

Gender

REACH

RoHS

Compliant with Exemptions

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Export Control Classification Number (ECCN)

DFARS Specialty Metals

How can we improve?

6,221 Products

Protective Plugs

Snap-In Panel Plugs

Snap-In Panel Plugs

Close off unused wiring openings and holes in sheet metal

Locking Panel Plugs

Locking Panel Plugs

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

Metal Snap-In Panel Plugs

Metal Snap-In Panel Plugs

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

Snap-In Plugs

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

Push-In Panel Plugs

Push-In Panel Plugs

Fit tightly on both sides to fill wiring and access holes

Hollow Tapered Plugs

Hollow Tapered Plugs

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

Tapered Plugs

One plug fits a range of diameters

Sealing Panel Plugs

Sealing Panel Plugs

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

Hollow Tapered Plug Assortments

Hollow Tapered Plug Assortments

A range of sizes for plugging holes big and small

Miniature Tapered Plugs

Miniature Tapered Plugs

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

Sealing Plugs

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

Freeze Plugs

Permanently seal the shallow holes left during the casting process

Pull-Tab-Release Hollow Plugs

Pull-Tab-Release Hollow Plugs

Lift and pull the tabs for easier removal than other plugs

Conductive Plugs

Conductive Plugs

Shield components from interference and drain static quickly

Hollow Plugs

Compress for snug fit

Snap-In Rectangular Plugs

Snap-In Rectangular Plugs

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

Snap-In Square Plugs

Snap-In Square Plugs

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

Snap-In Plugs for Socket Head Screws

Snap-In Plugs for Socket Head Screws

Keep debris from clogging or damaging hex drives

Tight-Hold Tapered Plugs

Tight-Hold Tapered Plugs

Tighten the wing nut to expand and seal

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

Tapered Plugs for Food and Beverage

Tapered Plugs for Food and Beverage

Nonporous and super smooth to prevent bacteria growth

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

Push-In Square Plugs

Push-In Square Plugs

Close off the ends of square tubing and furniture

Pull-Tab-Release Plugs

Pull-Tab-Release Plugs

Grip the tab for easier removal than other plugs

Pull-Through Plugs

Pull-Through Plugs

Fill the entire length of through holes

Push-In Rectangular Plugs

Push-In Rectangular Plugs

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

Metal Square Plugs

Metal Square Plugs

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

Antistatic Plugs

Antistatic Plugs

Prevent static buildup to protect sensitive electronics

Miniature Pull-Through Plugs

Miniature Pull-Through Plugs

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

Vented Locking Panel Plugs

Vented Locking Panel Plugs

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

Metal Snap-In Panel Plug Assortments

Metal Snap-In Panel Plug Assortments

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

Vented Plugs for Pipe and Tubing

Vented Plugs for Pipe and Tubing

Tear away the tab to release pressure while coatings cure

Vented Snap-In Panel Plugs

Vented Snap-In Panel Plugs

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

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

Pipe and Fittings

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

Expansion Plugs

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

Faucet Hole Covers

Faucet Hole Covers

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

Grommets

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

Clamp-On Framing End Caps

Clamp-On Framing End Caps

Fit into the end of clamp-on framing rails to use as a cover or foot

Fixture Plate Plugs

Fixture Plate Plugs

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

Quick-Release Pin Receptacles

Quick-Release Pin Receptacles

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

Bore Sealing Plugs

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

Slip-On Framing End Caps

Slip-On Framing End Caps

Cover the rough ends of slip-on framing rails for a finished look

Data Port Plugs

Data Port Plugs

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

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Breather Vents

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

Chimney Pipe and Fittings

Chimney Pipe and Fittings

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

Manhole Covers

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

Drum Plug Caps

Access inside drums to fill them

Press-Fit Nuts

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

Tamper-Evident Seals

Tamper-Evident Seals

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

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

Heat-Shrink Tubing End Caps

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

Drum Lids

Replace the lid on your drum

Stacking Caps and Targets

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

Cold-Shrink Tubing End Caps

Cold-Shrink Tubing End Caps

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

Drain Cleanouts

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

Circuit Breaker Box Filler Plates

Circuit Breaker Box Filler Plates

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

Press-Fit Framing End Caps

Press-Fit Framing End Caps

Push into press-fit rails for a finished look that keeps out debris

Bolt-Together Framing End Caps

Bolt-Together Framing End Caps

Cover the rough ends of bolt-together framing rails for a finished look

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

Standoff Caps

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

Pressure Test Fittings

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

Drum Plugs

Seal drum lid openings

Quick-Release Pin Retaining Caps

Quick-Release Pin Retaining Caps

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

Dust Covers

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

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

Electrical Enclosure Drain Vents

Electrical Enclosure Drain Vents

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

Pipe Vent Caps

Keep rain and debris out of vertical exhaust pipe

Data Port Locks

Data Port Locks

Block USB or Ethernet ports from unauthorized use

Floor Drain Covers

Floor Drain Covers

Put a lid on open drains to prevent accidents and injuries

Manhole Riser Rings

Manhole Riser Rings

Raise a manhole cover to make it level with the surface

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

Capacitor Boots

Capacitor Boots

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

Storm Drain Filters

Storm Drain Filters

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

Air Conditioner Service Valve Caps

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

DIN Rail Caps

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

Locking-Slotted Framing End Caps

Locking-Slotted Framing End Caps

Snap onto locking-slotted rails to protect the ends and keep out dust and grime

RJ45 Connector Security Clips

RJ45 Connector Security Clips

Lock Ethernet cords in place to prevent unauthorized removal from ports

USB Connector Caps

USB Connector Caps

Shield unused USB connectors from damage, contaminants, and moisture

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