Plastic Inserts | McMaster-Carr

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4,217 Products

Most Likely Products

Threaded Inserts

Create new threads or repair stripped threads

16 products

Protective Caps

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

833 products

Caster Sockets

Mount on the inside corners of channel and other framing to attach stem casters

12 products

Protective Plugs

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

467 products

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

96 products

All Results

Fastening and Joining

Threaded Inserts

Create new threads or repair stripped threads

16 products

Snap-In Nuts

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

22 products

Rivet Nuts

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

37 products

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

96 products

Washers

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

1,016 products

Binding Barrels

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

35 products

Retaining Rings

Hold components on a shaft

12 products

Shims

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

294 products

Snap-In Nut Tools

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

Building and Machinery Hardware

Protective Caps

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

833 products

Protective Plugs

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

467 products

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

40 products

Grommets

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

217 products

Surface Guards

Protect walls and other flat surfaces from impact

9 products

Leveling Mount Inserts

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

77 products

Protective Feet

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

98 products

Vibration-Damping Mounts

Attach to machinery to reduce vibration and noise and extend service life

36 products

Leveling Mounts

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

565 products

T-Slotted Framing and Fittings

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

2 products

Strut Channel Nuts

Fasten on threaded rod to connect components to strut channel

7 products

Material Handling

Caster Sockets

Mount on the inside corners of channel and other framing to attach stem casters

12 products

Protective Shipping Box Inserts

Fit snugly around glass bottles to absorb shock better than bubble wrap and air pillows

3 products

Shipping Box Liners

Line cardboard boxes to keep the items inside at a consistent temperature

5 products

Conveyor Guide Mounting Rod Caps

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

7 products

Hitch Pins

Secure hitch inserts to hitch receivers for towing

4 products

Fluid Handling

Tube Supports

Slip into plastic and rubber tubing to prevent them from collapsing

93 products

Hose and Hose Fittings

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

84 products

Containers, Storage, and Furniture

Pail Liners

Protect pails from harsh contents and then dispose for quick cleanup

13 products

Drum Liners

Protect drums from contents and then dispose for quick cleanup

29 products

Tank Liners

Protect tanks from harsh contents and then dispose for quick cleanup

15 products

Electrical

Data Port Locks

Block USB or Ethernet ports from unauthorized use

9 products

Data Port Plugs

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

1 product

DIN Rail Caps

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

2 products

Safety Equipment

Bump Cap Inserts

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

4 products

Facility and Grounds Maintenance

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

4 products

Faucet Hole Covers

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

1 product

Fabricating and Machining

Fixture Clamps

Secure your workpiece to a fixture table so it won't move during machining

8 products

Fixture Plate Plugs

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

2 products

Communication

Tamper-Evident Seals

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

2 products