Protective Caps | McMaster-Carr

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Material

Stainless Steel

System of Measurement

OD

0.053" to 0.12"

0.079" to 0.15"

0.111" to 0.177"

Pipe Size

Shape

Color

Inside Height

Fitting Type

Attachment Type

Worm-Drive Clamp

For Use With

Abrasive Materials

Pharmaceuticals

Thread Size

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"

Profile Shape

Thread Type

Chicago Fire Department

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Flexibility

Performance

Chemical Resistant

Corrosion Resistant

High Temperature

High Visibility

Impact Resistant

Metal Detectable

Moisture Resistant

RoHS

Compliant with Exemptions

REACH

Maximum Temperature

Less than 200° F

200° F to 249° F

250° F to 499° F

500° F to 999° F

1,000° F or greater

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

Pipe Material

Stainless Steel

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Drive Style

External 12-Point

External Octagon

External Square

Gender

Fitting Connection

Spec Image

Spec Image

Spec Image

O-Ring Face Seal

Push to Connect

Spec Image

Quick Disconnect

Spec Image

How can we improve?

7,024 Products

Protective Caps

Round Caps

Keep dust and coatings out of threads and prevent damage during shipping and storage

Tapered Caps

One cap fits a range of diameters

Rectangular Caps

Rectangular Caps

Slide onto rectangular parts such as levers and handles

Pull-Tab-Release Caps

Pull-Tab-Release Caps

Grab and tug with your fingertips for easier removal than other caps

Caps for Food and Beverage

Caps for Food and Beverage

Cover threads in food production and packaging areas

Square Caps

Fit over the ends of square tubing, framing rails, and posts

Screw-On Caps

Thread onto male pipe and fittings for the most secure fit

Caps for Hex Nuts

Caps for Hex Nuts

Seal out moisture and dirt to prevent corrosion and buildup on threads

Squeeze-Release Caps

Squeeze-Release Caps

The quickest to remove, caps release instantly with a pinch of your fingers

Tapered Cap Assortments

Tapered Cap Assortments

A variety of sizes for whatever job comes up

Tear-Tab Caps

Stay securely on fittings until you rip off the tab

Adhesive-Back Caps for Pipe Flanges

Adhesive-Back Caps for Pipe Flanges

Stick onto the raised face of flanges to prevent nicks and scratches

Metal Round Caps

Metal Round Caps

Tougher than plastic and rubber caps for the best protection from impact and wear

Caps for Pipe Flanges

Caps for Pipe Flanges

Push on to avoid surface scratches and hole damage or mask while painting and coating

Tethered Caps

Caps connect to parts so they don’t get lost when removed

Antistatic Caps

Antistatic Caps

Prevent static buildup to protect components such as semiconductors and resistors

Conductive Caps

Conductive Caps

Shield components from interference and drain static quickly

Hinged Caps for Screws

Hinged Caps for Screws

Flip open for frequent access to screws without misplacing the cap

90° Angle Caps

90° Angle Caps

Enclose the raw ends of angle iron, shelving, and furniture

Roll-Resistant Caps

Roll-Resistant Caps

Keep shipping tubes and other round objects from rolling and being damaged

Snap-On Caps for Screws

Snap-On Caps for Screws

Conceal screw heads for a finished look that protects people and parts from getting snagged

Domed Caps

Oversized head protects people from the sharp ends of pipe, rods, and handles

Corner Caps

Guard the corners of fragile or sharp materials such as glass and metal sheets

Snap-On Caps for Pipe Flanges

Snap-On Caps for Pipe Flanges

Align with the bolt holes and snap on to protect from damage and mask from coatings

Caps for Socket Head Screws

Caps for Socket Head Screws

Keep debris from clogging or damaging hex drives

Tear-Tab Caps for Propane Tanks

Tear-Tab Caps for Propane Tanks

Guard propane tank valves against dents and dirt

Retaining Caps

Hold components in place and protect shaft ends

No-Spill Caps

Even if beakers, bottles, and flasks are tipped upside down, liquids stay sealed inside

Hangable Caps

Slip over the end of handles to hang brooms, brushes, and other tools

Other Products

Protective Plugs

Protective Plugs

Insert into holes in pipe, containers, panels, and parts to keep out debris

Electrical Enclosure Plugs

Electrical Enclosure Plugs

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

Pipe and Fittings

Pipe and Fittings

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

Heat-Shrink Tubing End Caps

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

USB Connector Caps

USB Connector Caps

Shield unused USB connectors from damage, contaminants, and moisture

Tube and Tube Fittings

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

Metric Circular Connector Caps

Metric Circular Connector Caps

Keep metric circular connectors safe when they're not in use

Conveyor Guide Mounting Rod Caps

Conveyor Guide Mounting Rod Caps

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

Hose and Hose Fittings

Hose and Hose Fittings

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

Cold-Shrink Tubing End Caps

Cold-Shrink Tubing End Caps

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

Mini Connector Caps

Mini Connector Caps

Shield mini connectors when they're not in use

Fixture Plate Plugs

Fixture Plate Plugs

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

Mil. Spec. Connector Caps

Mil. Spec. Connector Caps

Protect Mil. Spec. connectors when they're not in use

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

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

Standoff Caps

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

Power Connector Caps

Power Connector Caps

Cover pin-and-sleeve power connectors when they're not in use

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

Tooling Ball Covers

Tooling Ball Covers

Protect tooling balls when not in use

DIN Rail Caps

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

Press-Fit Nuts

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

Bearing Guards

Shield bearings from dirt, and protect fingers and tools from moving parts

Syringe Caps

Cover syringe tips when not in use to protect them and prevent leaks

Fire Hydrant Caps

Fire Hydrant Caps

Pair with a hook-style spanner wrench to quickly cover and uncover fire hydrants

Capacitor Boots

Capacitor Boots

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

Circuit Breaker Box Filler Plates

Circuit Breaker Box Filler Plates

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

HDMI Connector Caps

HDMI Connector Caps

Protect HDMI sockets and maintain their IP rating when not in use

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Bore Sealing Plugs

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

RJ45 Connector Security Clips

RJ45 Connector Security Clips

Lock Ethernet cords in place to prevent unauthorized removal from ports

Quick-Release Pin Receptacles

Quick-Release Pin Receptacles

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

Knife Sheaths

Safely store knives while protecting them from damage

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

Data Port Locks

Data Port Locks

Block USB or Ethernet ports from unauthorized use

Manhole Riser Rings

Manhole Riser Rings

Raise a manhole cover to make it level with the surface

Drain Cleanouts

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

Fire Hydrant Plugs

Fire Hydrant Plugs

Pair with a hook-style spanner wrench to quickly seal fire hydrants and washdown equipment

Coaxial Connector Caps

Coaxial Connector Caps

Terminate the end of an unused coaxial cable

Pallet Load Covers

Pallet Load Covers

Fit over boxes on pallets to shield the tops and edges from strapping gouges and impact

Tamper-Evident Seals

Tamper-Evident Seals

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

RJ45 Connector Caps

RJ45 Connector Caps

Protect sockets and maintain the IP67 rating when not in use

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