Plastic Inserts | McMaster-Carr

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3,273 Products

Building and Machinery Hardware

Protective Caps

Protective Caps

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

Protective Plugs

Protective Plugs

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

Grommets

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

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

Surface Guards

Protect walls and other flat surfaces from impact

Vibration-Damping Mounts

Vibration-Damping Mounts

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

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

Fastening and Joining

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Snap-In Nuts

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

Anchors

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

Binding Barrels and Screws

Binding Barrels and Screws

Thread together for a low-profile fastener

Washers

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

Shims

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

Retaining Rings

Retaining Rings

Hold components on a shaft

Material Handling

Caster Sockets

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

Protective Shipping Box Inserts

Protective Shipping Box Inserts

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

Shipping Box Liners

Shipping Box Liners

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

Conveyor Guide Mounting Rod Caps

Conveyor Guide Mounting Rod Caps

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

Safety Equipment

Bump Cap Inserts

Bump Cap Inserts

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

Electrical

DIN Rail Caps

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

Data Port Locks

Data Port Locks

Block USB or Ethernet ports from unauthorized use

Data Port Plugs

Data Port Plugs

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

Fluid Handling

Hose and Hose Fittings

Hose and Hose Fittings

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

Containers, Storage, and Furniture

Pail Liners

Protect pails from harsh contents and then dispose for quick cleanup

Tank Liners

Protect tanks from harsh contents and then dispose for quick cleanup

Drum Liners

Protect drums from contents and then dispose for quick cleanup

Communication

Tamper-Evident Seals

Tamper-Evident Seals

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

Facility and Grounds Maintenance

Faucet Hole Covers

Faucet Hole Covers

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

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

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