Round Caps | McMaster-Carr

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System of Measurement

OD

0.053" to 0.12"

0.079" to 0.15"

0.111" to 0.177"

Color

Cap Type

Inside Height

Shape

Material

Stainless Steel

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

Pipe Size

Plug Connection Method

Flexibility

Screw Size

Thread Size

For Use With

Abrasive Materials

Socket Head Screws

Fitting Type

Attachment Type

Maximum Temperature

Less than 200° F

200° F to 249° F

250° F to 399° F

400° F to 499° F

500° F or greater

RoHS

Compliant with Exemptions

Head Diameter

Export Control Classification Number (ECCN)

REACH

DFARS Specialty Metals

Height

Thread Type

Chicago Fire Department

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Performance

Chemical Resistant

Corrosion Resistant

High Temperature

High Visibility

Impact Resistant

Metal Detectable

How can we improve?

2,311 Products

Protective Caps

Round Caps

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

Metal Round Caps

Metal Round Caps

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

Tapered Caps

One cap fits a range of diameters

Tapered Cap Assortments

Tapered Cap Assortments

A variety of sizes for whatever job comes up

Screw-On Caps

Thread onto male pipe and fittings for the most secure fit

Pull-Tab-Release Caps

Pull-Tab-Release Caps

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

Squeeze-Release Caps

Squeeze-Release Caps

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

Caps for Food and Beverage

Caps for Food and Beverage

Cover threads in food production and packaging areas

Tear-Tab Caps

Stay securely on fittings until you rip off the tab

Tear-Tab Caps for Propane Tanks

Tear-Tab Caps for Propane Tanks

Guard propane tank valves against dents and dirt

Hinged Caps for Screws

Hinged Caps for Screws

Flip open for frequent access to screws without misplacing the cap

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

Caps for Socket Head Screws

Caps for Socket Head Screws

Keep debris from clogging or damaging hex drives

Caps for Pipe Flanges

Caps for Pipe Flanges

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

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

Adhesive-Back Caps for Pipe Flanges

Adhesive-Back Caps for Pipe Flanges

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

No-Spill Caps

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

Conductive Caps

Conductive Caps

Shield components from interference and drain static quickly

Antistatic Caps

Antistatic Caps

Prevent static buildup to protect components such as semiconductors and resistors

Tethered Caps

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

Roll-Resistant Caps

Roll-Resistant Caps

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

Hangable Caps

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

Domed Caps

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

Other Products

Protective Plugs

Protective Plugs

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

Cap Nuts

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

Heat-Shrink Tubing End Caps

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

Conveyor Guide Mounting Rod Caps

Conveyor Guide Mounting Rod Caps

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

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

Retaining Rings

Retaining Rings

Hold components on a shaft

Standoff Caps

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

Hose and Hose Fittings

Hose and Hose Fittings

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

Bore Sealing Plugs

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

Manhole Covers

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

Fire Hydrant Caps

Fire Hydrant Caps

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

Fire Hydrant Plugs

Fire Hydrant Plugs

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

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

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.)