Extensions | McMaster-Carr

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Air Hammer Adapter

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Hex Head Adapter

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Quick-Change Adapter

Ratchet Adapter

Secure-Hold Extension

Secure-Hold Socket Adapter

Spline Drive-to-Square Drive Adapter

Square Drive Size Adapter

Torque-and-Angle Measuring Adapter

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Aluminum Bronze

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Hot-Dipped Galvanized

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Extended Length @ Maximum Load

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Adjustable-Angle Elbow

How can we improve?

17,553 Products

Fastening and Joining

Socket Extensions

Socket Extensions

Lengthen sockets to turn hard-to-reach fasteners

Socket Adapters

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Socket Bits

Switch out worn or damaged bits instead of replacing your entire bit socket

Ratchet Wrenches

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

Bit Adapters

Connect a variety of bits to drills, powered screwdrivers, ratchet wrenches, and other turning tools

Rivet Tool Accessories and Replacement Parts

Rivet Tool Accessories and Replacement Parts

Add accessories like nosepieces and jaws or replace seals and other parts on your rivet tool

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Coupling Nuts

Connect and extend threaded rods

Hex Nuts

Handle most general fastening needs

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Fabricating and Machining

Drill Bit Extensions

Drill Bit Extensions

Expand the reach of drill bits to get into deep and hard-to-reach spots

Drill Bits

Create holes in metal, wood, plastic, concrete, and more

Wire Brush Extension Rods

Wire Brush Extension Rods

Access hard-to-reach surfaces by threading onto your wire brush

Wire Brush Handles

Wire Brush Handles

Add a loop or T-handle grip to the threaded end of your wire brush

Wire Brush Handle and Extension Kits

Wire Brush Handle and Extension Kits

Everything you need to add length and a grip to wire brushes with a threaded shank

Wire Brushes

Scrub by hand or connect to power tools to clean, polish, deburr, and remove rust

Blowguns

Direct a stream of air to clean equipment, parts, and spaces

End Mill Extensions

End Mill Extensions

Lengthen the reach of your end mill

Tap Extensions

Extend the length of your tap to cut in hard-to-reach areas

Taps

Cut internal threads for fasteners, pipe, conduit, and more

Drill Chuck Arbor Extensions

Drill Chuck Arbor Extensions

Lengthen the reach of your drill chuck arbor

Drill Chuck Arbor Adapters

Drill Chuck Arbor Adapters

Convert your Morse taper arbor to fit machine spindles that are too small or large

Hole Saw Arbor Extensions

Hole Saw Arbor Extensions

Reach your hole saw into spots where your drill is too big to fit

Rotary Tool Shafts

Rotary Tool Shafts

Pair with rotary tools to grind, sand, finish, and polish corners and other tight spots

Rotary Tool Guides

Rotary Tool Guides

Sharpen, grind, and sand with rotary tools at exact 45° and 90° angles

Electrical

Electrical Cords

Electrical Cords

Connect equipment and devices to a power supply

Outlet Strips

Plug in multiple devices to power them from a single outlet

Electrical Adapters

Electrical Adapters

Change electrical connectors to another type, size, or gender

Electrical Cord Adapters

Electrical Cord Adapters

Change the electrical connection style between an outlet and your equipment

Electrical Sockets

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

Electrical Plugs

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

Electrical Receptacles

Electrical Receptacles

Install in a wall or panel to transmit power or data to plugs or sockets

Electrical Cord Reels

Electrical Cord Reels

Neatly store electrical cords for easy access

Data Connection Hubs

Data Connection Hubs

Add USB, DisplayPort, or HDMI ports to your computer to connect multiple device

Electrical Wire

Electrical Wire

Make single-wire connections; generally for lower voltages and shorter distances than cable

Electrical Cord Locks

Electrical Cord Locks

Cover mated connectors on extension cords to prevent disconnection

Electrical Cord Circuit Interrupter Converters

Electrical Cord Circuit Interrupter Converters

Hardwire to extension cords to protect against electric shock in wet areas

Electrical Cable

Electrical Cable

Make multi-wire connections; generally for higher voltages and longer distances than wire

Electrical Connector Contacts

Electrical Connector Contacts

Crimp wire into pins and sleeves to create custom Molex or Amphenol connectors

Electrical Cord Holders

Electrical Cord Holders

Keep extension cords, rope, hose, and chain tangle-free and ready to use

Outlet Box Extenders

Outlet Box Extenders

Add depth to an outlet box when there’s not enough space for components

Outlet Boxes

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

Outlet Box Covers

Outlet Box Covers

Enclose wiring for outlets and switches or block off unused components

Raceway and Raceway Fittings

Raceway and Raceway Fittings

Route and guard wiring along indoor surfaces

Battery Chargers

Battery Chargers

Charge everything from large-cell to cordless tool to household batteries

Power Transmission

Extension Springs

Extension Springs

As stretched, springs become increasingly harder to pull

Shaft Adapters

Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends

Facility and Grounds Maintenance

Pole Handles

Replace handles or extend the reach on tools like brooms, paint rollers, and window washers

Pressure Washer Extension Wands

Pressure Washer Extension Wands

Connect to your pressure washer to spray down hard-to-reach areas

Wash Gun Nozzle Extensions

Wash Gun Nozzle Extensions

Attach to your wash gun nozzle to clean places out of arm's reach

Sink Drain Trap Extension Tubing

Sink Drain Trap Extension Tubing

Add to a drain tailpiece when it doesn’t reach the trap

Sink Drain Traps

Sink Drain Traps

Retain a small amount of water to keep sewer gas from escaping

Downspout Extensions

Downspout Extensions

Add to downspouts to carry water away from your building's foundation

Vacuum Cleaner Attachments

Vacuum Cleaner Attachments

Add brushes, crevice tools, blower nozzles, and extension wands to your vacuum hose

Vacuum Cleaner Hose Connectors

Vacuum Cleaner Hose Connectors

Link multiple vacuum hoses or attach hose to a central vacuum system

Measuring and Inspecting

Variance Indicator Extension Rods

Variance Indicator Extension Rods

Lengthen the reach of your variance indicator

Probe Stylus Accessories

Probe Stylus Accessories

Add components that extend length, adapt threads, or hold multiple styli at once

Inside Hole Micrometer Handles

Inside Hole Micrometer Handles

Screw into your micrometer head to extend its reach for measuring deep holes

Caliper Range Extenders

Caliper Range Extenders

Expand your caliper's range to measure large items

Depth Gauge Base Extensions

Depth Gauge Base Extensions

Increase the base width of your depth gauge to measure large holes

Inspection Mirrors

Inspection Mirrors

Reach around corners and obstructions to inspect hard-to-see areas

Inspection Cameras

Inspection Cameras

Reach into tight and hard-to-access spots and stream the inspection on your phone or tablet

Safety Equipment

Fall-Arrest Extension Straps

Fall-Arrest Extension Straps

Hook to the D-ring on your harness to make it easier to attach a fall-arrest lanyard

Face Mask Strap Extenders

Face Mask Strap Extenders

Reduce pressure on your ears for long-lasting comfort

Communication

Telephone Cords

Telephone Cords

Connect telephones to data outlets

Material Handling

Conveyor Brackets

Conveyor Brackets

Mount guide clamps, sensors, drip pans, and other attachments to conveyor frames

Conveyors

Roller, skate wheel, ball transfer, belt, and vacuum conveyors

Conveyor Guide Clamps

Conveyor Guide Clamps

Connect conveyor guides to each other and secure them in place

Extension Planks

Extension Planks

Adjust length to span ladder jacks and other supports to build your own scaffold

Ladder Extensions

Ladder Extensions

Grab to climb safely from the top of a ladder onto a roof or other elevated surface

Ladders

Wall-mount, rolling platform, and step ladders

Robot Tool Extensions

Robot Tool Extensions

Attach tools or extensions to robot arms

Robot Mounts

Secure your robot arm to benches, frames, or other surfaces

Valve Stems

Snap into tubeless tire rims to create an air inlet

Valve Stem Extensions

Valve Stem Extensions

Add length to the stem of tire valves

Forklift Fork Extensions

Forklift Fork Extensions

Add length to forklift forks to support large loads

Building and Machinery Hardware

Adjustable Handles

Adjustable Handles

Lift and turn to easily position and tighten components; also called clamping handles

Crank Handles

The offset handle gives extra leverage to maximize turning force

Steering Wheel Extensions

Steering Wheel Extensions

Bring steering wheels closer to you when your reach or mobility is limited

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

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

Lubricating

Grease Fittings

Grease Fittings

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

Grease Fitting Repair Tools

Grease Fitting Repair Tools

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

Grease Fitting Manifolds

Grease Fitting Manifolds

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

Grease Gun Tip Adapters

Grease Gun Tip Adapters

Quickly switch between standard, button-head, and flush-style grease fittings

Grease Gun Accessory Kits

Grease Gun Accessory Kits

Adapt and extend dispensing tips and install grease fittings with an assortment of tools

Grease Gun Couplers

Grease Gun Couplers

Extend the dispensing tip on grease guns to lubricate angled and hard-to-reach areas

Grease Gun Nozzles

Grease Gun Nozzles

Replace nozzles on grease guns

Containers, Storage, and Furniture

Hose Reels

Store hose neatly to remove tripping hazards and reduce wear

Hydraulic Lifts

Hydraulic Lifts

Convert fixed-height workbenches into adjustable-height workbenches

Aerosol Spray Straws

Aerosol Spray Straws

Direct streams from aerosol cans for precise applications

Aerosol Spray Extensions

Aerosol Spray Extensions

Snap onto aerosol spray cans to extend their reach

Fluid Handling

Air Nozzles

Blow concentrated air for cleaning, drying, cooling, and ejecting parts

Thermocouple Cords

Thermocouple Cords

Extend the reach of thermocouple probes

Lighting

Light Socket Adapters

Light Socket Adapters

Convert light fixtures to accept different bulbs

Heating, Ventilation, and Air Conditioning

Duct and Duct Fittings

Duct and Duct Fittings

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

Sealing

Caulk Gun Nozzles

Caulk Gun Nozzles

Attach to caulk guns to change the shape and amount of sealant that's dispensed

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