Caps | McMaster-Carr

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Material

Aramid/Carbon Fiber Fabric

Hastelloy C276 Nickel

Fitting Type

Reducing Adapter

System of Measurement

Pipe Size

Shape

Adjustable-Angle Elbow

OD

0.053" to 0.12"

0.079" to 0.15"

0.111" to 0.177"

Thread Type

Chicago Fire Department

For Use With

Abrasive Materials

Alcohol-Based Solvents

Extension Cords

Color

Brown/Dark Brown/White

Attachment Type

Band-and-Buckle Clamp

Crimp-On Hose Ferrule

Worm-Drive Clamp

Gender

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"

Thread Size

Tube OD

Pipe Material

Stainless Steel

Profile Shape

Pipe Schedule

Length

Inside Height

Performance

Abrasion Resistant

Adjustable Height

Arc Flash Resistant

Automatic Shut-Off

Chemical Resistant

Connect Under Pressure

Corrosion Resistant

Crack Resistant

RoHS

Compliant with Exemptions

REACH

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

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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17,686 Products

Fluid Handling

Pipe and Fittings

Pipe and Fittings

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

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

Tubing Flow Stops

Tubing Flow Stops

Temporarily block water flow to make soldering repairs without waiting for your line to drain

Hose Fittings

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

Pipe Vent Caps

Keep rain and debris out of vertical exhaust pipe

Expansion Plugs

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

Bore Sealing Plugs

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

Air Vent Valves

Air Vent Valves

Eliminate air pockets from fluid lines to maintain consistent flow and prevent surges

Breather Vents

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

Pressure-Relief Valves

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

Sights

Observe and monitor the contents of pipes, tanks, and other containers

Thermocouple Connector Covers

Thermocouple Connector Covers

Shield thermocouple connectors from dust and debris

Heat Exchanger Plugs

Heat Exchanger Plugs

Plug leaky internal tubes in heat exchangers

Building and Machinery Hardware

Protective Caps

Protective Caps

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

Protective Plugs

Protective Plugs

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

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

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

Bolt-Together Framing End Caps

Bolt-Together Framing End Caps

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

Slip-On Framing and Fittings

Slip-On Framing and Fittings

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

Press-Fit Framing End Caps

Press-Fit Framing End Caps

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

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

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

Knobs

Position, tighten, and secure fixtures and equipment

Hand Grips

Cover handles so they're more comfortable and secure to hold

Protective Feet

Protective Feet

Add to furniture and light equipment to protect floors from scratches and wear

Leveling Mount Inserts

Leveling Mount Inserts

Slip onto equipment and furniture to add threaded-stud leveling feet

Leveling Mounts

Leveling Mounts

Level machines and workbenches on uneven surfaces, reduce vibration, and protect floors

Keyhead Covers

Color-code your keys for easy identification

Door Drip Guards

Door Drip Guards

Divert rain and snow away from door openings

Lockouts

Ensure that machines stay turned off to prevent accidents during maintenance work

Corner Guards

Shield corners on walls and other surfaces from impact

Electrical Power, Networking, and Controlling

Metric Circular Connector Caps

Metric Circular Connector Caps

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

USB Connector Caps

USB Connector Caps

Shield unused USB connectors from damage, contaminants, and moisture

Mini Connector Caps

Mini Connector Caps

Shield mini connectors when they're not in use

Power Connector Caps

Power Connector Caps

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

Power Connectors

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

Mil. Spec. Connector Caps

Mil. Spec. Connector Caps

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

Latching Connectors

Latching Connectors

Protect connections in wet or harsh environments while keeping them accessible

RJ45 Connector Caps

RJ45 Connector Caps

Protect sockets and maintain the IP67 rating when not in use

Coaxial Connector Caps

Coaxial Connector Caps

Terminate the end of an unused coaxial cable

Solenoid Valve Sockets

Solenoid Valve Sockets

Pair with plugs or receptacles to connect solenoid components

Coaxial Connectors

Coaxial Connectors

Plugs, sockets, receptacles, and adapters to make coaxial connections

RJ45 Plugs

Pair with sockets or receptacles to make Ethernet connections

Mil. Spec. Connectors

Mil. Spec. Connectors

Meet strict military standards or are compatible with Mil. Spec. connectors

Audio Connectors

Audio Connectors

Plugs, sockets, receptacles, and adapters to make audio connections

CB Radio Sockets

CB Radio Sockets

Pair with receptacles to connect CB radios

D-Sub Connectors

D-Sub Connectors

Plugs, sockets, receptacles, and adapters for connecting computers, monitors, and printers

Molex Connectors

Molex Connectors

Plugs, sockets, and housings for making Molex connections

Metric Circular Connectors

Metric Circular Connectors

Plugs, sockets, receptacles, and adapters for equipment with metric connections

USB Connectors

Plugs, sockets, receptacles, and adapters to make USB connections

Amphenol Connectors

Amphenol Connectors

Attach wires to a circuit board

Sure Seal Connectors

Sure Seal Connectors

A PVC housing keeps out liquids and dust and resists chemicals

RJ45 Connector Repair Clips

RJ45 Connector Repair Clips

Snap onto broken Ethernet plugs to restore their ability to make secure connections

Breakaway Connectors

Breakaway Connectors

If pulled or stressed, these disconnect without damaging cables and equipment

HDMI Adapters

Convert one HDMI size or style to another

Ballast Connectors

Ballast Connectors

Avoid exposure to live wires when replacing fluorescent ballasts

DMX Connectors

Replace damaged plugs and sockets on lighting cables

Ecomate Connectors

Ecomate Connectors

Connect machine tools, robots, and other vibrating equipment

Mini Connectors

Mini Connectors

Plugs, sockets, and receptacles send power and control signals to equipment and automated systems

AMP Connectors

Build-your-own and ready-to-use AMP connectors

Micro 360 Connectors

Micro 360 Connectors

Plugs and sockets to make control and data connections in tight spaces

Han Connectors

Plugs and sockets to make Han connections

ix Industrial Sockets

ix Industrial Sockets

Pair with plugs to add ix Industrial connections to printed circuit boards

RJ45 Connector Security Clips

RJ45 Connector Security Clips

Lock Ethernet cords in place to prevent unauthorized removal from ports

Wire Splices, Connectors, and Taps

Wire Splices, Connectors, and Taps

Join wire and protect the connection

Data Port Plugs

Data Port Plugs

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

USB Cords

Transfer data between computers, printers, and mobile devices

Metric Circular Cords

Metric Circular Cords

Send power and control signals to equipment with metric connections

Power Cords

Connect equipment and devices to a power source

Terminal and Splice Kits

Terminal and Splice Kits

Maintain a supply of extra terminals and splices to join and terminate wire

Terminal Covers

Terminal Covers

Block out dirt and corrosion to protect battery terminals

Wire Splice Covers

Wire Splice Covers

Seal out dust and moisture to protect electrical connectors

USB Chargers

Power up mobile devices and other electronics

Wire Splice Screwdrivers

Wire Splice Screwdrivers

Install twist-on wire splices

Data Port Locks

Data Port Locks

Block USB or Ethernet ports from unauthorized use

Wire Splice Bits

Wire Splice Bits

Install twist-on wire splices using a power screwdriver or drill

Welding Cable Connectors

Welding Cable Connectors

Plugs and sockets to deliver power to welding cable

Electrical Enclosure Plugs

Electrical Enclosure Plugs

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

Electrical Enclosure Drains

Electrical Enclosure Drains

Release moisture to keep components dry

Heat-Shrink Tubing End Caps

Heat-Shrink Tubing End Caps

Seal moisture out of crimped electrical connections

Cold-Shrink Tubing End Caps

Cold-Shrink Tubing End Caps

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

Outlet Box Covers

Outlet Box Covers

Enclose wiring for outlets and switches or block off unused components

Weatherheads

Bring power into buildings and protect the entry point from rain and snow

Electrical Enclosure Vents

Electrical Enclosure Vents

Attach to sealed enclosures so air can flow to equalize temperature and pressure

Electrical Enclosure Drain Vents

Electrical Enclosure Drain Vents

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

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

DIN Rail Caps

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

Battery Vent Caps

Battery Vent Caps

Flip open to check water levels and fill wet-cell batteries

Capacitor Boots

Capacitor Boots

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

Electrical Insulating Wire Caps

Electrical Insulating Wire Caps

Cover live wire ends to protect against shock from accidental contact

Circuit Breaker Box Filler Plates

Circuit Breaker Box Filler Plates

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

Fuse Block Safety Covers

Fuse Block Safety Covers

Prevent accidental shocks when handling fuse blocks and fuses

Circuit Board Connectors

Circuit Board Connectors

Connect flat flexible cable to circuit boards

Fastening and Joining

Cap Nuts

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

Standoff Caps

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

Quick-Release Pin Receptacles

Quick-Release Pin Receptacles

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

Quick-Release Pin Retaining Caps

Quick-Release Pin Retaining Caps

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

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Press-Fit Nuts

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

Push Nuts

Press onto threads for a light duty hold that’s faster to install than typical nuts

Retaining Rings

Retaining Rings

Hold components on a shaft

Binding Barrel Caps

Binding Barrel Caps

Pair with a plastic binding barrel post to create a custom fastener

Cartridge Sealing Caps

Cartridge Sealing Caps

Slip over the tips of adhesive and sealant cartridges to keep contents from hardening

Socket Retaining Rings

Socket Retaining Rings

Secure sockets and adapters to impact tools

Containers, Storage, and Furniture

Drum Plug Caps

Access inside drums to fill them

Fuel Caps

Seal fuel tanks on trailers, compressors, and other equipment

Drum Plugs

Seal drum lid openings

Gas Tank Safety Caps

Gas Tank Safety Caps

Protect valves on high-pressure gas tanks without having to remove the regulator

Helmet Bags

Carry your helmet and shield it from scratches, dents, and rain

Dust Covers

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

Hard Hat Bags

Protect your hard hat from sunlight and other damaging elements to extend its life

Drum Locks

Secure drum lids and openings to prevent tampering

Gas Tank Safety Collars

Gas Tank Safety Collars

Protect valves on acetylene tanks without having to remove the regulator

Pail Lids

Replace the lid on your pail with one that quickly screws open and closed

Drum Locking Rings

Drum Locking Rings

Clamp lids onto drums for a tight seal

Drum Lids

Replace the lid on your drum

Drum Covers

Protect drum lids from damage and rust

Vial Caps

Take samples from vials without removing the cap

Syringe Caps

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

Stacking Caps and Targets

Stacking Caps and Targets

Turn the ends of posts into stackable shelving and rack systems

Hard Hat Racks

Keep hard hats close at hand, but out of the way

Pegboard Hook End Caps

Pegboard Hook End Caps

Slide onto the end of pegboard hooks to protect items from scratches

Knife Sheaths

Safely store knives while protecting them from damage

Safety Equipment

Hair Covers

Catch stray hairs before they contaminate food

Hoods

Shield your head and neck from dirt, heat, cold, and electrical and welding sparks

Hats

Shield your head from sun, rain, cold, and sparks

Clothing Kits

Head-to-toe protection from electrical arc flashes, chemical splashes, welding sparks, and more

Hard Hat Liners

Hard Hat Liners

Layer under your hard hat for extra warmth

Earplugs

Protect your hearing in loud environments without the bulk of earmuffs

Hard Hats

Protect your head from falling objects

Toe and Foot Guards

Toe and Foot Guards

Slip over shoes or boots to shield feet and toes from impact

Bandanas

Keep sun, dust, and sweat off your face

Earmuffs

Dampen loud noises to protect hearing

Bump Caps

Guard against minor head bumps and scrapes

Hard Hat Cooling Pads

Hard Hat Cooling Pads

Soak in water to keep your head cool

Bicycle Helmets

Bicycle Helmets

A multi-directional impact protection system (MIPS) reduces injury risk

Ear Warmers

Wrap behind your head to shield your ears from the cold and wind

Hard Hat Windsocks

Hard Hat Windsocks

Stretch over your hard hat to block wind and cold

Sweatbands

Absorb sweat from your head or arms

Bump Cap Inserts

Bump Cap Inserts

Tuck inside a baseball cap to protect your head from bumps and scrapes

Neck Gaiters

Protect your neck and face from cold, heat, flames, and electrical hazards

Face Shields

Protect your face from dirt, chemical splashes, and electrical and welding sparks

Earmuff and Headset Covers

Earmuff and Headset Covers

Keep shared earmuffs, headsets, and headphones germ-free without sterilizing them

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

Bearing Guards

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

Spill-Control Drain Covers

Spill-Control Drain Covers

Block grates and manholes so liquid can't get in and odors can't get out

Floor Drain Plugs

Floor Drain Plugs

Prevent oil and other spills from going down your floor drain

Heating, Ventilation, and Air Conditioning

Duct and Fittings

Duct and Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

Air Diverters

Guide air toward your workspace or deflect unwanted drafts

Chimney Vent Caps

Chimney Vent Caps

Cover chimneys to reduce downdrafts and block out debris

Air Conditioner Service Valve Caps

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

Air Conditioner Service Valves

Air Conditioner Service Valves

Tap into refrigerant lines to drain and fill your system

Temperature-Controlled Outlet Adapters

Temperature-Controlled Outlet Adapters

Automatically turn heating and cooling devices on and off as temperatures rise and fall

Fabricating and Machining

Clamp Holding Screw Tips

Clamp Holding Screw Tips

Cover metal holding screws to protect workpieces from scratches

Clamp Holding Screws

Clamp Holding Screws

Replace worn holding screws in clamps or customize with different sizes or styles

Tweezer Tip Caps

Tweezer Tip Caps

Protect tweezer tips from damage

Jaw Covers for Pliers

Jaw Covers for Pliers

Cover the jaws of slip-joint pliers to protect the finish of your workpiece

Vise Jaw Liners

Vise Jaw Liners

Place over vise jaws to protect workpieces from marring

Fixture Plate Plugs

Fixture Plate Plugs

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

Tooling Ball Covers

Tooling Ball Covers

Protect tooling balls when not in use

Sanding Bits

Smooth out small, recessed, and hard-to-reach areas, and also remove paint and rust

Lubricating

Grease Fitting Caps

Grease Fitting Caps

Protect grease fittings from dirt, debris, and moisture

Grease Fitting Adapters

Grease Fitting Adapters

Mate grease fittings when the sizes and thread types don't match

Grease Fittings

Grease Fittings

Create an inlet on equipment and machinery for injecting lubricant; also known as Zerk fittings

Coolant Hose and Fittings

Coolant Hose and Fittings

Build a custom system to deliver coolant, cutting oil, water, or air in any direction

Grease Fitting Manifolds

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

Grease Fitting Cleaning Tools

Grease Fitting Cleaning Tools

Flush out old grease, dirt, and debris from clogged fittings

Grease Fitting Junction Blocks

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

Grease Fitting Repair Tools

Grease Fitting Repair Tools

Remove and repair broken or clogged grease fittings and re-tap threaded holes

Grease Fitting Installation Tools

Grease Fitting Installation Tools

Tap to insert grease fittings in unthreaded holes

Facility and Grounds Maintenance

Drain Cleanouts

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

Sink Drains

Empty liquids from sinks into sewer lines

Flush Valve Replacement Parts

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

Faucet Hole Covers

Faucet Hole Covers

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

Sink Drain Stoppers

Sink Drain Stoppers

Plug drains to fill up sinks and tubs

Sink Drain Strainers

Sink Drain Strainers

Catch debris to prevent clogs and plug drains to fill sinks

Protective Coatings

Protective Coatings

Shield surfaces from the surrounding environment

Chain Link Fencing

Chain Link Fencing

Everything you need to build or repair a chain link fence, from posts to gates

Fence Posts

Secure and hold up fencing

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

Shampoo Caps

Remove contaminants from your hair with no rinsing required

Communication

Labels

Stick onto items to identify or convey information about them

Tamper-Evident Seals

Tamper-Evident Seals

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

Marking Cones

Mark materials on pallets or the floor to streamline staging and inventory control

Headsets

Make calls from computers and other devices or communicate over two-way radios

Material Handling

Valve Stem Caps

Valve Stem Caps

Keep dust and debris out of tire valves

Conveyor Guide Mounting Rod Caps

Conveyor Guide Mounting Rod Caps

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

Ladder Pads

Cushion the top of ladders to protect surfaces

Pallet Load Covers

Pallet Load Covers

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

Power Transmission

Die Spring Screw Caps

Die Spring Screw Caps

Brace springs and control tension in die sets while simplifying maintenance

Measuring and Inspecting

Variance Indicator Caps

Variance Indicator Caps

Cover and color-code the spindle on your variance indicator

Caliper Battery Covers

Caliper Battery Covers

Protect the battery inside your caliper

Voltage Detectors

Voltage Detectors

Check for voltage in receptacles, cables, and electrical components

Sealing

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

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