Collars | McMaster-Carr

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System of Measurement

Shaft Diameter

Material

Hastelloy C276 Nickel

Construction

Shaft Type

Round with Support Rail

Shaft Mount Type

Width

Finish

Aluminum-Zinc Alloy Coated

Anodized

Black Oxide

Cadmium Plated

Cadmium Yellow-Chromate Plated

Chrome Plated

Corrosion-Resistant Coated

Galvanized

Hot-Dipped Galvanized

Titanium Nitride (TiN) Coated

Length

Clamping Screw Material

Thread Size

Number of Clamping Screws Included

Screw Size

Set Screw Material

Shaft Width

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

Yes

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Compliant

Exempt

Not Compliant

Export Control Classification Number (ECCN)

Performance

Electrically Insulating

Keyway Width

Pipe Size

Shape

22,656 Products

Power Transmission

Shaft Collars

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

2,725 products

Shaft Couplings

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

696 products

Bore Reducers

Adapt the bore of a component to a smaller size for mounting on a shaft

31 products

Lead Screw Collars

Position components and limit travel along a lead screw

55 products

Bearing Adapter Sleeves

Close gaps between your bearing and shaft for a tight fit

29 products

Bearing Nuts

Hold bearings, bushings, pulleys, and gears in place on threaded shafts and spindles

412 products

Precision Lead Screw Nuts

Pair with precision lead screws for accurate starts and stops in your assembly

114 products

Precision Lead Screw Nut Flanges

Pair with precision lead screw nuts to make custom flange nuts that move items along lead screws

18 products

Lead Screw Nuts

Mate with lead screws to move components in a straight line

33 products

Fastening and Joining

Spacers

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

4,771 products

Washers

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

11 products

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

267 products

Cross-Bracing Washers

Connect cross-bracing rods or cables to structural beams; also known as hillside washers

20 products

Finishing Washers

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

5 products

Threaded Rod Collars

Hold and position parts on a threaded rod

76 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

145 products

Push-Button Nuts

Disengage the threads to quickly slide along threaded rods

5 products

Flange Nuts

The flange distributes pressure, so you don't need a washer

769 products

Weld Nuts

Weld to metal surfaces to add permanent threads

308 products

Adhesive-Mount Nuts

Attach threads to material that’s too thin for a threaded insert

166 products

Push Nuts

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

17 products

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

2,910 products

Unthreaded Inserts

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

69 products

Fabricating and Machining

Drill Bushings

Fit in holes to guide drill bits and other cutting tools for precise and repeatable holes and cuts

3,936 products

Die Bushings

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

102 products

Slotted Bushings

Pair with a standard bushing to prevent alignment pins from binding in your fixture

34 products

Drill Stops

Limit how far bits can drill to create identical hole depths every time

145 products

Countersinks

Cut a cone-shaped opening in a hole to install flat-head screws and rivets flush with the surface

67 products

Counterbores

Enlarge the top of a hole to install socket and hex head screws flush with the surface

29 products

Drill Chuck Replacement Parts

Replace collars, shells, ball bearings, and other parts on drill chucks

7 products

Retaining Nuts for Backup Pads

Thread onto your tool’s arbor to hold a sanding disc against the backup pad

3 products

Building and Machinery Hardware

Grommets

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

943 products

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

203 products

Flush-Fit Framing Rail Ends

Secure flush-fit framing structures to floors, walls, and ceilings

3 products

Slip-On Framing and Fittings

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

111 products

T-Slotted Framing and Fittings

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

2 products

Press-Fit Framing and Fittings

Set up temporary partitions, guards, and displays using only a hammer

6 products

Adjustable Handles

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

21 products

Padlock Hanging Chains

Attach padlocks that aren't in use to walls and workstations to prevent losing them

9 products

Heating, Ventilation, and Air Conditioning

Duct and Fittings

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

250 products

Diffuser Collars

Connect diffusers to duct

4 products

Chimney Pipe and Fittings

Exhaust hot air and fumes from boilers, furnaces, and stoves

11 products

Exhaust Fans

Draw stagnant and humid air out of a room or area

72 products

Exhaust Fan Collars

Connect exhaust fans to louvers

17 products

Raw Materials

Plastic

A lightweight alternative to metal and glass

698 products

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

229 products

Material Handling

Pipe Hangers

Suspend pipe, conduit, and tube from rods, hooks, and straps

76 products

Scaffold Clamps

Construct scaffolding and secure supports, such as railings

2 products

Fluid Handling

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

1,405 products

Tube and Tube Fittings

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

77 products

Hose and Hose Fittings

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

26 products

Facility and Grounds Maintenance

Floor, Wall, and Ceiling Plates

Add a finishing touch around protruding pipes; also known as escutcheons

46 products

Toilet Mounts

Secure toilet components with flanges and hardware kits

11 products

Toilet Seat Fasteners

Secure toilet seat hinges to your toilet bowl

1 product

Urinal Flanges

Connect a urinal to your drainage system

2 products

Manhole Riser Rings

Raise a manhole cover to make it level with the surface

4 products

Measuring and Inspecting

Ring Gauge Holders

Keep ring gauges still to measure cylindrical parts or threads quickly and repeatedly

17 products

Sealing

Pipe Flashings

Create watertight seals around vent pipes on roofs, even if they expand, contract, and vibrate

13 products

Safety Equipment

Cover Plates for Fire Sprinkler Heads

Replace the cover on your fire sprinkler head for a clean look; also known as escutcheons

12 products

Fire Stops

Prevent fire and smoke from passing through holes in fire-resistant walls and floors

8 products

Tool Tether Attachments

Slide onto tools to connect them to equipment lanyards

10 products

Containers, Storage, and Furniture

Pallet Collars

Enclose your pallet to make a custom crate with no tools required

2 products

Communication

Tube Fitting Markers

Snap onto push-to-connect fittings to identify different tubing lines

13 products

Bottle Tags

Slip onto bottles to color code their contents

3 products