Metal Reducers | McMaster-Carr

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Material

Ferrite Ceramic

Stainless Steel

Pipe Material

Stainless Steel

Fitting Type

Reducing Adapter

Reducing Washer

Pipe Size

Thread Type

UN/UNF (SAE 45°)

UN/UNF (SAE Straight)

Shape

Side-Outlet Elbow

Side-Outlet Tee

Fitting Connection

Interlocking Bracket

Push to Connect

Gender

For Use With

Grinders for Bits and Burs

Handheld Power Drills

Pharmaceuticals

Solid Particles

Acetic Acid (White Vinegar) (10% Concentration)

Pipe Schedule

Flange Material

Stainless Steel

System of Measurement

Connects To

DFARS Specialty Metals

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

REACH

Fitting Material

Stainless Steel

Tube Material

Stainless Steel

Finish

Black Zinc Plated

Dry Film Lubricated

Magnesium Phosphate Coated

Molybdenum Disulfide Coated

Neoprene Coated

For Use In

Sleeve Material

Stainless Steel

Pipe Finish

Plug Material

Silicone Rubber

Thread Material

Thread Finish

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20,871 Products

Fluid Handling

Pipe Fittings

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

Pipe Nipples and Pipe

Pipe Nipples and Pipe

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

Pipe Flanges

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

Pipe Plugs

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

Pipe Locknuts

Thread onto the male end of a pipe fitting so it won't loosen from vibration

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

Pipe Fitting Clamps

Pipe Fitting Clamps

Connect easy-access and grooved-end pipe fittings to pipe

Tube Fittings

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

Tube Fitting Sleeves

Tube Fitting Sleeves

Pair with nuts and fittings to form a secure connection on tubing

Tube Fitting Nuts

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

Tube End Caps

Cover the ends of tube to keep out dirt and debris

Hose Fittings

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

Manifolds

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

Pressure-Regulating Valves

Pressure-Regulating Valves

Reduce inlet pressure to a lower outlet pressure to protect sensitive equipment

Pressure-Relief Valves

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

Vacuum-Regulating Valves

Vacuum-Regulating Valves

Control the amount of air that a vacuum pump draws from your system to maintain vacuum levels

Diverting Valves

Diverting Valves

Redirect flow between ports

On-Off Valves

Start and stop flow through a line

Air-Exhaust Valves

Air-Exhaust Valves

Vent or divert exhaust to speed up the operation of air cylinders, actuators, and other equipment

Fastening and Joining

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Threaded Inserts

Threaded Inserts

Create new threads or repair stripped threads

Rivet Nuts

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

Screw-Mount Nuts

Screw-Mount Nuts

Mount with screws, rivets, and nails to add threads to a surface

Spacers

Unthreaded to create space between two surfaces or objects, often to align them

Standoffs

Threaded to separate or connect parts as well as position components in assemblies

Socket Nuts

Install in recessed holes and tight spots where a wrench won’t fit; also known as Allen nuts

Unthreaded Inserts

Unthreaded Inserts

Reinforce, align, and adjust joints as you tighten a fastener

Studs

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

Socket Adapters

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

Wrench Heads

Attach to your ratchet wrench and socket extension to turn fasteners where clearance is limited

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Socket Extensions

Socket Extensions

Lengthen sockets to turn hard-to-reach fasteners

Tape

Bind, seal, and mark surfaces

Electrical

Conduit-to-Conduit Connectors

Conduit-to-Conduit Connectors

Join pieces of conduit

Conduit Knockout Reducers

Conduit Knockout Reducers

Shrink knockout sizes in electrical boxes to connect smaller conduit

Raceway and Raceway Fittings

Raceway and Raceway Fittings

Route and guard wiring along indoor surfaces

Power Supplies

Convert your facility's AC voltage to power equipment that runs on DC voltage

Power Converters

Power Converters

Connect power supplies to equipment that requires a different input voltage

Circuit Board Voltage Regulators

Circuit Board Voltage Regulators

Power circuits from a high-voltage source without frying your system

Electrical Sockets

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

Electrical Plugs

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

Electrical Receptacles

Electrical Receptacles

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

Power Transmission

Gear Boxes

Adjust motor speed to achieve the right torque for your machine; transmit motion at a 90° angle

Gear Box Mounts

Gear Box Mounts

Secure gear boxes that can’t be attached directly to a machine or other surface

Bore Reducers

Adapt the bore of a component to a smaller size for mounting on a shaft

Shaft Couplings

Shaft Couplings

Connect two shafts to transfer rotary motion from one to the other

Shaft Adapters

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

Shear Couplings

Shear Couplings

Sever the connection between shafts when there's too much torque to protect parts from breaking

Machinable Shaft Ends

Machinable Shaft Ends

Mill custom pulleys, threaded hubs, sprockets, collars, and sensor targets and mount them to shafts

Pulley and Sprocket Bushings

Pulley and Sprocket Bushings

Mount between a rotating shaft and equipment to secure the shaft and reduce vibration

Compressed Air Regulators

Compressed Air Regulators

Ensure continuous, safe operation of air-powered equipment by controlling air pressure

Compressed Air Filter/Regulators

Compressed Air Filter/Regulators

Simultaneously clean air that's running through a system and control its pressure

Compressed Air Filter/Regulator/Lubricators

Compressed Air Filter/Regulator/Lubricators

Deliver clean, lubricated air at the desired pressure to a component in your line

Compressed Air Filter/Regulator Manifolds

Compressed Air Filter/Regulator Manifolds

Purify air from a single supply and distribute it to multiple locations

Compressed Air Regulator Manifolds

Compressed Air Regulator Manifolds

Use a single air supply to meet multiple pressure requirements

Compressed Air Filters

Compressed Air Filters

Purge particles, oil, and other contaminants from air lines to prevent damaging equipment

Rod Ends

Use with connecting rods to support loads and control steering, tensioning, or pivoting motion

Torque Limiters

Torque Limiters

Keep torque at or below a set limit to control tension or braking or protect machinery from overload

Bearing Adapter Sleeves

Bearing Adapter Sleeves

Close gaps between your bearing and shaft for a tight fit

Heating, Ventilation, and Air Conditioning

Duct and Fittings

Duct and Fittings

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

Duct Noise Reducers

Duct Noise Reducers

Muffle noise from high-velocity airflow and fans, blowers, and dust collectors

Material Handling

Wheel Reducer Bushings

Wheel Reducer Bushings

Reduce the inside diameter of a bearing to fit a particular axle size

Box Reducers

Cut tall boxes down to the size you need and save on shipping costs

Fabricating and Machining

Saw Blade Bushings

Saw Blade Bushings

Shrink the diameter of your saw blade's arbor hole to fit your saw's arbor

Saw Blade Arbor Adapters

Saw Blade Arbor Adapters

Convert a diamond arbor hole to a round arbor hole

Wheel Brush Arbor Hole Reducers

Wheel Brush Arbor Hole Reducers

Adjust arbor hole size so it'll fit the shaft of your tool

Facility and Grounds Maintenance

Water Hammer Arresters

Water Hammer Arresters

Absorb shock of sudden shutoffs to prevent knocking noises in water pipes

Building and Machinery Hardware

Access Panels

Install in ceilings, walls, concrete floors, and tanks to access and inspect inside

Safety Equipment

Sound Barrier Sheets

Sound Barrier Sheets

Block and reflect noise to keep it from reaching other parts of your facility

Acoustic Insulation

Acoustic Insulation

Absorb sound to quiet noisy areas and machines

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