Metric Connectors | McMaster-Carr

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3,169 Products

Electrical

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

51 products

Electrical Receptacles

Install in a wall or panel to transmit power or data to plugs or sockets

128 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

53 products

Electrical Cords

Connect equipment and devices to a power supply

581 products

Electrical Adapters

Change electrical connectors to another type, size, or gender

39 products

Electrical Connector Caps

Protect data connectors when not in use

4 products

Distribution Blocks

Distribute electricity from a single power source to several devices in a circuit

8 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

118 products

Conduit and Conduit Fittings

Protect wiring from impact and the environment in runs indoors, outdoors, and underground

65 products

Switch Mounts

Mount sensor switches to panel cutouts, tank walls, or conveyors

1 product

Fluid Handling

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

458 products

Pipe and Pipe Fittings

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

372 products

Hose and Hose Fittings

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

141 products

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

23 products

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

2 products

Pressure Test Plugs

Tighten onto equipment to check pressure without permanently installing a gauge

3 products

On-Off Valves

Start and stop flow through a line

6 products

Fastening and Joining

Coupling Nuts

Connect and extend threaded rods

183 products

Hex Nuts

Handle most general fastening needs

14 products

Weld Nuts

Weld to metal surfaces to add permanent threads

133 products

Snap-In Nuts

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

27 products

Adhesive-Mount Nuts

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

66 products

Thread Adapters

Join threads of a different type, size, and gender

10 products

Single-End Studs

Use the unthreaded end as a pivot point, hinge, shaft, or locator pin

47 products

Binding Barrels

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

70 products

Studs

Press, weld, or screw in place to add a threaded fastening point

203 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

24 products

Lubricating

Grease Fitting Adapters

Mate grease fittings when the sizes and thread types don't match

11 products

Grease Fittings

Create an inlet on equipment and machinery for injecting lubricant; also known as Zerk fittings

150 products

Grease Gun Tips

Attach to grease gun nozzles and direct a stream of lubricant into grease fittings on machinery

5 products

Grease Guns

Manually inject lubrication through grease fittings on equipment and machinery

9 products

Grease Gun Nozzles

Replace nozzles on grease guns

2 products

Coolant Nozzles

Dispense coolant onto workpieces or tools directly from a tank

14 products

Material Handling

Mounts for Vacuum Cups and Lifters

Mount vacuum cups or vacuum lifters to surfaces

2 products

Vacuum Fittings

Connect to vacuum cups and compressed air to create suction; also known as venturi devices

2 products

Containers, Storage, and Furniture

Drum Plugs

Seal drum lid openings

2 products

Building and Machinery Hardware

Positioning Arms

Mount and position tools, small electronics, and displays

1 product

Leveling Mount Inserts

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

15 products