Yellow Plugs | McMaster-Carr

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Conveyor Guide Mounting Rod Caps

Development Board Cords

Electrical Contact Installation Tools

Expansion Plugs

Extension Cord Circuit Interrupter Converters

Extension Cords

Fiber-Optic Cords

Floor Drain Plugs

Grease Fitting Caps

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Food and Beverage

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1,585 Products

Most Likely Products

Power Connectors

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

Protective Plugs

Protective Plugs

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

Extension Cords

Extension Cords

Extend the reach of power from an outlet

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Electrical Power, Networking, and Controlling

Power Connectors

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

Power Connector Caps

Power Connector Caps

Cover pin-and-sleeve power connectors when they're not in use

Metric Circular Connectors

Metric Circular Connectors

Plugs, sockets, receptacles, and adapters for equipment with metric connections

Strain-Relief Connector Boots

Strain-Relief Connector Boots

Protect connectors and cords from strain, bends, and pulls

Mini Connectors

Mini Connectors

Plugs, sockets, and receptacles send power and control signals to equipment and automated systems

Molex Plug and Socket Sets

Molex Plug and Socket Sets

Come with wire leads installed for quick additions to existing Molex systems

AMP Plug and Socket Sets

AMP Plug and Socket Sets

Come with wire leads installed for quick additions to existing AMP systems

Micro 360 Connectors

Micro 360 Connectors

Plugs and sockets to make control and data connections in tight spaces

Extension Cords

Extension Cords

Extend the reach of power from an outlet

Metric Circular Cords

Metric Circular Cords

Send power and control signals to equipment with metric connections

Extension Cord Circuit Interrupter Converters

Extension Cord Circuit Interrupter Converters

Hardwire to extension cords to protect against electric shock in wet areas

Mini Cords

Often used to send power and control signals to automated systems, motors, and pumps

D-Sub Cords

Connect computers, monitors, printers, and other devices with DB connections

Fiber-Optic Cords

Fiber-Optic Cords

Connect computers, servers, and switches in a fiber-optic network

Power Cords

Connect equipment and devices to a power source

Ethernet Cords

Send data between computers, printers, servers, and switches

Coaxial Cords

Transmit audio, video, and data with minimal signal loss

Power Cord Holders

Power Cord Holders

Keep extension cords, rope, hose, and chain tangle-free and ready to use

Outlet Strips

Plug in multiple devices to power them from a single outlet

Binding Posts

Test circuits before making permanent connections

Terminal Blocks

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

Terminals

Attach wire endings everywhere from circuit breaker panels to batteries

Electrical Contact Installation Tools

Electrical Contact Installation Tools

Add pin-and-sleeve contacts to connectors

Development Board Cords

Development Board Cords

Connect your development board to components such as sensors and actuators

Inverters

Transform DC voltage to power devices that run on AC voltage; prevent overload damage

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

Building and Machinery Hardware

Protective Plugs

Protective Plugs

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

Protective Caps

Protective Caps

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

Strut Channel Framing and Fittings

Strut Channel Framing and Fittings

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

Fluid Handling

Expansion Plugs

Expansion Plugs

Seal pipe and tubing lines when checking for leaks

Pipe Plugs

Insert into the ends of pipe to keep out dirt and debris

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

Hose

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

Tube Coupling Plugs

Tube Coupling Plugs

Pair with sockets for a complete tube coupling

Safety Equipment

Earplugs

Protect your hearing in loud environments without the bulk of earmuffs

Floor Drain Plugs

Floor Drain Plugs

Prevent oil and other spills from going down your floor drain

Spill-Control Drain Covers

Spill-Control Drain Covers

Block grates and manholes so liquid can't get in and odors can't get out

Bearing Guards

Shield bearings from dirt, and protect fingers and tools from moving parts

Communication

Tamper-Evident Seals

Tamper-Evident Seals

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

Lubricating

Grease Fitting Caps

Grease Fitting Caps

Protect grease fittings from dirt, debris, and moisture

Material Handling

Conveyor Guide Mounting Rod Caps

Conveyor Guide Mounting Rod Caps

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

Facility and Grounds Maintenance

Rebar Caps

Brightly colored to alert workers to exposed rebar and pipe

Storm Drain Filters

Storm Drain Filters

Prevent leaves, sticks, and trash from washing down storm drains and grates

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