Aluminum Rounds | McMaster-Carr

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Shape

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Electrically Insulating

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Compliant with Exemptions

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11,475 Products

Raw Materials

Aluminum

Lightweight, easy to machine, and corrosion resistant—all with material certificates for traceability

869 products

Bronze

Better wear resistance than copper and brass—all with material certificates for traceability

52 products

Fastening and Joining

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

1,165 products

Standoffs

Separate, position, or connect components in assemblies

130 products

Standoff Caps

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

1 product

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

192 products

Sealing Washers

Prevent fluids from leaking around fasteners

50 products

Lock Washers

Resist vibration to prevent fasteners from loosening

9 products

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

5 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

157 products

Cap Nuts

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

6 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

17 products

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

80 products

Binding Barrels

Create custom low-profile fasteners with binding barrel posts, caps, and screws

156 products

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

8 products

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

86 products

Press-Fit Nuts

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

26 products

Unthreaded Inserts

Reinforce, align, and adjust joints as you tighten a fastener

10 products

Magnets

Attract or repel metal objects to hang, secure, or position them

36 products

Power Transmission

Sleeve Bearings

With no moving parts, the plainest type of bearing

168 products

Turntable Bearings

Support machinery that slowly turns or oscillates, such as a rotating hoist

22 products

Thrust Bearings

Support loads parallel to the shaft with plain, ball, or roller bearings

54 products

Flanged Sleeve Bearings

A sleeve and thrust bearing in one to support both parallel and perpendicular loads

132 products

Linear Bearings

Minimize friction as parts move along a shaft

191 products

Mounted Bearings

Ball, roller, and sleeve bearings ready to bolt in place

200 products

Timing Belt Drive Pulleys

Pair with a timing belt to keep your drive system in sync

529 products

Timing Belt Idler Pulleys

Add to your timing belt setup to minimize vibration and keep belts from wearing out

12 products

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

243 products

Linear Shafts

Pair with linear bearings to reduce friction in manual and automated systems

113 products

Shaft Collars

Hold and position parts on a shaft, or limit shaft movement

495 products

Rotary Shafts

Pair with gears, sprockets, and bearings to transmit rotary motion

18 products

Shaft Couplings

Connect two shafts to transfer rotary motion from one to the other

1,098 products

Drive Rollers

Transmit power from motors to systems like conveyors; also known as contact wheels and feed rollers

150 products

Hydraulic Cylinders

Push and pull heavy loads to operate forklifts, compactors, and other machinery

24 products

Air Cylinders

Push and pull loads to do everything from stamping materials to sorting parts on conveyors

1,314 products

Building and Machinery Hardware

Protective Caps

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

32 products

Protective Plugs

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

21 products

Turntables

Rotate to reposition machinery and equipment

6 products

Knobs

Position, tighten, and secure fixtures and equipment

53 products

Hand Wheels

Rotate to adjust machinery, valves, drill presses, and other equipment

187 products

Indicating Knobs

Control devices and view settings at a glance

8 products

Ball Knobs

Provide grip on control levers and push-pull rods

18 products

Access Panels

Install in ceilings, walls, concrete floors, and tanks to access and inspect inside

3 products

Grommets

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

64 products

Antislip Tape

Add traction to smooth surfaces, such as floors, rollers, and ladder handrails

1 product

Chain Wheels

Add a pull chain to operate overhead doors, hatches, and valves

11 products

Fabricating and Machining

Sanding Sticks and Bricks

Deburr and smooth larger work surfaces and machine parts than polishing stones

19 products

Sanding Discs

Add to sanders, floor buffers, and other tools to smooth out workpieces and remove paint and rust

919 products

Sanding Pads

Reach into pipes, tubes, corners, and slots to smooth their surfaces and remove paint and rust

8 products

Sanding Bits

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

12 products

Spring Locating Pins

Apply side force to workpieces to clamp them in place

46 products

Die Bushings

Guide pins and punches in molds and stamping dies or reduce friction between ejector pins and plates

102 products

Spring Stops

Push back against workpieces to hold them in place against stops and rails

12 products

Flap Wheels

Create a uniform finish on flat and curved surfaces without gouging them

480 products

Rotary Tool Grinding Wheels

Pair with rotary tools to remove material from work surfaces using abrasion

2 products

Rotary Tool Cutoff Wheels

Replace the cutoff wheel on your Dremel rotary tool

18 products

Grinding Cones

For corners and the inside of castings, remove large amounts of material and leave a rough surface

21 products

Grinding Bits

Pair with grinders for light material removal and precision grinding

188 products

Cutoff Wheels

Install in grinders to cut through metal, concrete, and ceramics

219 products

Grinding Wheels

Add to grinders to remove material from work surfaces using abrasion

296 products

Polishing Bobs

Attach to a drill or grinder to polish small and hard-to-reach areas

11 products

Polishing Stones

Create a finer, more polished finish on tools, molds, and dies than sanding sticks

24 products

Sharpening Stones

Sharpen a variety of tools such as knives, chisels, and plane blades

2 products

Wire Brushes

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

36 products

Chisel Bits

Pair with powered hammers or needle scalers to chip material off of workpieces

3 products

Buffing and Polishing Wheels

Remove surface imperfections to achieve a precise, flat finish

8 products

Lapping Film

Polish workpieces without the mess of pastes and slurries

18 products

Cutoff Saw Wheels

Replace the wheel on your cutoff saw

60 products

Spiral Saw Cutoff Wheels

Attach to your RotoZip spiral saw to make straight cuts

1 product

Communication

Message Plates

Fasten to doors, walls, and plate holders to identify locations and objects

22 products

Tags

Hang throughout facilities to convey information

39 products

Tag Rings

Loop onto tags to attach them to lanyards, key rings, and other objects

2 products

Labels

Stick onto items to identify or convey information about them

1 product

Legend Plates

Mark switches and lights on control panels for easy identification

1 product

Signs

Everything from accident prevention to traffic control to exit signs

1 product

Safety Equipment

Safety Mirrors

See what's happening around corners, at intersections, down aisles, and over counters

3 products

Electrical

Lightning Rods

Attract lightning strikes to safely redirect them from the tops of buildings to the ground

9 products

Outlet Boxes

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

6 products

Outlet Box Extenders

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

4 products

Outlet Box Covers

Enclose wiring for outlets and switches or block off unused components

2 products

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

6 products

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

23 products

Fluid Handling

Bore Sealing Plugs

Permanently seal unthreaded holes in pneumatic and hydraulic components

27 products

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

13 products

Sights

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

10 products

Corrosion-Inhibiting Rods and Pads

Protect tanks, water heaters, and heat exchangers from rust; also known as sacrificial anodes

3 products

Measuring and Inspecting

Levels

Ensure surfaces are completely horizontal or vertical

5 products

Torque Sensors

Convert manually applied torque into an electrical signal that you can measure and record

16 products

Machine Vision Lights

Illuminate an object so your machine vision camera can capture detailed images for inspection

6 products

Material Handling

Pulleys

Mount or suspend to guide wire rope for lifting and pulling loads

4 products

Skate Wheels

Replace wheels on skate wheel conveyors or add wheels for a custom setup

1 product

Wheels

Move objects with ease

58 products

Ball Transfers

Install in arrays to create platforms for conveying, rotating, and positioning heavy objects

3 products

Conveyor Rollers

Support and move objects along conveyors

50 products

Drum Dollies

Instead of tilting heavy loads on drum trucks, roll drums upright to where you need them

4 products

Heating, Ventilation, and Air Conditioning

Louvers

Allow air to circulate through doors, walls, roofs, and enclosures

37 products

Sealing

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

6 products