Retainers | McMaster-Carr

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27,786 Products

Fastening and Joining

Retaining Rings

Hold components on a shaft

2,362 products

Cotter Pins

Secure the ends of clevis pins and shafts to keep components in place

982 products

Clevis Pins

Secure parts in place and lock with a cotter pin or retaining ring

2,039 products

Quick-Release Pins

Fasten or remove components on equipment with a spring-loaded retaining ball

2,245 products

Quick-Release Pin Retaining Caps

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

23 products

Linch Pins

Slide into holes on clevis pins and shafts and snap down the locking ring so parts won’t fall off

20 products

Push Nuts

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

65 products

Clip-On Nuts

Slide onto the edge of thin panels to create a fastening point

143 products

Snap-In Nuts

Push into square holes in thin materials to add bolts for aligning off-center parts

99 products

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

21 products

Weld Nuts

Weld to metal surfaces to add permanent threads

589 products

Adhesive-Mount Nuts

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

166 products

Rivet-Mount Nuts

Add threads in hard-to-reach areas and materials that are too thin to be tapped

41 products

Washers

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

55 products

Captive Panel Screws

Secure panels and enclosures while still having access to them

402 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

99 products

Spring Button Clips

Join pieces of telescoping tubing using spring force

40 products

Gravity Pins

Slip through holes in telescoping tubing and wrap around to secure

1 product

Split Rings

Secure clevis pins, connect components, or add a pull handle; also known as key rings

67 products

Panel Clips

Slide over the edge of two or more panels to hold them together without tools or fasteners

3 products

Standoff Caps

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

66 products

Threaded Rod Collars

Hold and position parts on a threaded rod

76 products

Hog Rings

Squeeze closed using hog ring pliers to seal sacks, repair fences, and clip on tags

11 products

Staples

Use in air-powered, electric, cordless, and manual staplers to secure cardboard and other materials

133 products

Safety Pins

Fasten tags, labels, and other objects to fabric without pricking yourself

3 products

Retaining Ring Pliers

Install and remove rings inside a bore or around a shaft

120 products

Push Nut Installation Tools

Press nuts and retaining rings onto threaded fasteners and shafts

12 products

Press-Fit Nut Installation Tools

Everything you need to install press-fit nuts by hand

2 products

Socket Retaining Rings

Secure sockets and adapters to impact tools

39 products

Snap-In Nut Tools

Compress the legs of snap-in nuts so they're easy to install and remove

3 products

Retaining Compounds

Fill gaps to bond shafts, bearings, press-fit assemblies, and other cylindrical metal parts

80 products

Adhesive and Sealant Assortments

A collection of adhesives for routine maintenance and quick repairs

1 product

Threadlocker and Retaining Compound Dispensers

Screw onto bottles of threadlocker or retaining compound to control the flow and reduce waste

2 products

Tube Dispensers

Squeeze all the contents out of tubes

2 products

Threadlockers

Coat threads on threaded fasteners to prevent loosening from impact and vibration

167 products

Power Transmission

Die Spring Screw Caps

Brace springs and control tension in die sets while simplifying maintenance

10 products

Die Spring Cages

Contain the pieces from broken springs to protect dies from damage

10 products

Die Springs

Support heavy loads with minimal compression in high-impact jobs such as punching and stamping

484 products

Disc Springs

Maintain tension and separate components on shafts, under bolt heads, and at the ends of valves

1,680 products

Compression Springs

When squeezed, springs push back to their original length

2,792 products

Garter Springs

Exert radial force from all directions to maintain pressure on shafts or in seals

74 products

Extension Springs

When stretched, springs pull their ends back together

4,736 products

Strip Springs

Wrap around a shaft and extend to pull objects in a linear direction

77 products

Linear Wave Springs

Absorb vibration and fill in gaps along the length of an object

22 products

Rotor Springs

Wind to store power, then release to create rotary motion—similar to winding a wristwatch

10 products

Made-to-Order Compression Springs

If you can't find the exact size spring you need, we'll get it made for you

80 products

Spring Assortments

Keep extension, compression, and torsion spring types of various sizes on hand

7 products

Torsion Springs

Wrap around a shaft or rod to maintain pressure on objects as they rotate

560 products

Gas Springs

Support the weight of doors, hatches, and lids to assist opening and closing

812 products

Gas Spring Mounts

Attach gas springs to panels, lids, and doors using a bracket or stud

9 products

Shaft Collars

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

2,725 products

Rod End Inserts

Attach to rod ends to increase the amount of misalignment they can handle

29 products

Bearing Nuts

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

412 products

Roller Chain Spring Clips

Replace the clips that secure ANSI roller chain connecting links

7 products

Inverted-Tooth Chain Pins

Replace the pins in your inverted-tooth chain or link two chains together

6 products

Lead Screw Collars

Position components and limit travel along a lead screw

55 products

Machinable Shaft Ends

Mill custom pulleys, threaded hubs, sprockets, collars, and sensor targets and mount them to shafts

56 products

Building and Machinery Hardware

Door Chains

Keep free-swinging doors from opening too far and prevent damage to hinges, doors, and walls

7 products

Garage Door Opener Receivers

Wire to automatic overhead door openers to accept signals from remote and keypad transmitters

1 product

Garage Door Opener Internet Gateways

Use a smartphone or computer to control automatic overhead door openers

1 product

Garage Door Openers

Automatically open and close overhead doors; also known as jackshafts

4 products

Garage Door Opener Transmitters

Send signals to receivers to open and close automatic overhead door openers

8 products

Door Closers

Automatically and smoothly pull doors, storm doors, and gates closed

106 products

Door Closer Mounts

Replace door closers without drilling new holes by matching current hole patterns

1 product

Door Closer Arms

Replace arms instead of the entire closer to continue to pull doors closed

6 products

Door Closer Covers

Make existing door closers look new again while blocking out dirt and debris

2 products

Door Holders

Mount to doors, walls, or floors to keep doors open

90 products

Prop Rods

Prop hood, trunk, and other lids open at a variety of angles

1 product

Door Barricades

Stop intruders from opening doors in your facility during emergency lockdowns

2 products

Lid Supports

Keep lids on cabinets, hatches, and chests open and then close them smoothly or softly

61 products

Fusible Links

Automatically close fire doors, windows, vents, and more in the event of a fire

31 products

Door Springs

Extend and snap back to pull storm doors and gates closed

18 products

Window Balancers

Suspend, lift, or lower objects that move vertically in a track such as windows, doors, and panels

32 products

Window Opener Handles

Replace handles instead of the entire opener to operate crank-to-open windows

2 products

Door Openers

Automatically open doors with a slight nudge

2 products

Door Wedges

Simply slide under doors to keep them open

9 products

Door Bumpers

Protect large swinging doors from impact where carts and vehicles often push them open

4 products

Window Openers

Operate crank- or push-to-open casement and awning windows

3 products

Door Silencers

Close doors quietly and keep them from rattling in their frames

3 products

Lockset Bumpers

Protect knobs and hardware on doors from carts, dollies, and other equipment

1 product

Door Stops

Keep doors from slamming into and damaging walls

70 products

Panel Hanging Brackets

Mount and remove panels

131 products

Door Installation Dollies

Install a door by yourself without leaning it against a wall

1 product

T-Slotted Framing and Fittings

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

35 products

Strut Channel Framing and Fittings

Secure fittings in the U-shaped channel to route conduit and pipe or build other structures

3 products

Overhead Door Spring Winding Rods

Keep your overhead door balanced on both tracks for smooth, even opening and closing

3 products

Adjustable Handles

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

21 products

Material Handling

Cable Holders

Mount to a surface to secure and route cable

138 products

Cable Ties

Bundle and secure cable, wire, and hose; also known as zip ties

705 products

Hook and Loop Straps

Pull apart and secure again and again as the size of your bundle changes

387 products

Cable Bundling Tools

Quickly organize wires, cables, and cords into bundles

2 products

Bead Chain Links

Connect, loop, and mount lengths of bead chain

47 products

Bead Chain

Tether tools to machines, keys to chucks, and caps to tanks; also known as ball chain

103 products

Ring Links

Bend, hammer, or twist closed to connect chain links and attach fittings

47 products

Routing J-Hooks

Hang, adjust, and remove bundles of cable through the wide opening more easily than with routing rings

16 products

Routing Rings

Suspend wire and cable by feeding it through the eyehole

40 products

Routing Ring Bases

Temporarily attach routing rings to steel and iron surfaces with a magnet

2 products

Hitch Pins

Secure hitch inserts to hitch receivers for towing

12 products

Scaffold Locking Pins

Fasten base plates, guardrail posts, and other components to scaffold frames

4 products

Containers, Storage, and Furniture

Pegboard Hook Retainers

Stop pegboard hooks from falling out of place

1 product

Mirror Holders

Mount frameless mirrors

4 products

Strap Handles

Wrap around bundles and hard-to-grip objects for a more convenient carry

9 products

Electrical

Battery Clip Retaining Pins

Hold battery retaining clips closed to stop batteries from coming loose

2 products

Battery Retaining Clips

Mount batteries inside battery holders

7 products

Wire Duct

Guide and organize wiring inside electrical boxes and machines

71 products

Raceway and Raceway Fittings

Route and guard wiring along indoor surfaces

296 products

Outlet Strip Mounts

Snap in outlet strips for quick mounting on flat surfaces

4 products

Vehicle Wire

Make connections in low-voltage vehicle wiring systems

10 products

Sealing

Caulk Guns

Cartridge, sausage-pack, and bulk-load caulk guns

40 products

Caulk Gun Nozzles

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

12 products

Thread Sealants

Create a seal between threaded connections to prevent loosening from vibration

184 products

Communication

Tag Rings

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

72 products

Tag Washers

Bolt onto surfaces to mount tag rings and ties

18 products

Tag Ties

Wrap through tag holes to connect to items such as lanyards and key rings

2 products

Safety Equipment

Respirator Filter Retainers

Replace the retainer on 3M or Moldex respirators

3 products

Chain Barrier Links

Split in half and snap back together to securely connect lengths of chain

6 products

Fabricating and Machining

Air Hammer Retainers

Replace the retainer on your air hammer

5 products

Springs for Locking Pliers

Change out worn or broken springs in the handle of your locking pliers

6 products

Heating, Ventilation, and Air Conditioning

Insulation Hanger Studs

Press insulation sheets onto the spike to secure them to walls and other flat surfaces

21 products

Fluid Handling

Pipe and Pipe Fittings

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

24 products

Hose and Hose Fittings

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

2 products