Reducing Couplings | McMaster-Carr

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10,031 Products

Fluid Handling

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Form threaded, barbed, flanged, and other types of connections between lengths of pipe

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Pipe Nipples and Pipe

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

67 products

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Create an access point in a line by bolting two same-size flanges together with a gasket

133 products

Expansion Joints

Reduce stress, vibration, and noise in piping systems by absorbing movement

7 products

Tube Fittings

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

1,263 products

Hose Fittings

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

330 products

Hose Nozzle Swivels

Rotate to prevent hose from kinking, twisting, and wearing

4 products

Fastening and Joining

Thread Adapters

Join threads of a different type, size, and gender

2,511 products

Electrical

Conduit and Conduit Fittings

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

23 products

Facility and Grounds Maintenance

Dust Collectors

Extract sawdust, chips, and other particles from the air and contain them for disposal

6 products

Vacuum Cleaner Hose Connectors

Link multiple vacuum hoses or attach hose to a central vacuum system

4 products

Power Transmission

Shaft Adapters

Increase or reduce your shaft's diameter to fit equipment, or replace damaged shaft ends

54 products

Heating, Ventilation, and Air Conditioning

Duct and Duct Fittings

Circulate air through HVAC systems using round, rectangular, and fabric duct

173 products

Lubricating

Coolant Dispenser Hose and Fittings

Snap together and position to deliver coolant, oil, water, or air in any direction

7 products