Stainless Steel Couplings | McMaster-Carr

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Compressed Non-Asbestos Synthetic Fiber

Stainless Steel

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Stainless Steel

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Adjustable-Angle Elbow

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Gender

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Expand to Connect

O-Ring Face Seal

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Pipe Schedule

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For Use With

Abrasive Materials

Ball Joint Rod Ends

Pharmaceuticals

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Stainless Steel

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Corrugated Pipe

Railroad Tank Car

Fitting Material

Stainless Steel

DFARS Specialty Metals

RoHS

Compliant with Exemptions

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REACH

Tube Material

Stainless Steel

Sleeve Material

Stainless Steel

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Stainless Steel

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Stainless Steel

Plug Material

303 Stainless Steel

316 Stainless Steel

Socket Material

303 Stainless Steel

316 Stainless Steel

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25,454 Products

Most Likely Products

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

Shaft Couplings

Shaft Couplings

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

Tube Fittings

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

All Results

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

Expansion Joints

Expansion Joints

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

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

Pipe Collars

Clamp pipe passing through floors and walls

Pipe Plugs

Insert into 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

Rotary Unions

Transfer air, water, oil, and steam from supply lines to continuously revolving drums and rollers

Tube Fittings

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

Tube Fitting Clamps

Tube Fitting Clamps

Quickly secure connections between tube fittings, including sanitary and high-vacuum fittings

Tube Fitting Nuts

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

Tube Fitting Sleeves

Tube Fitting Sleeves

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

Tube Fitting Rings

Tube Fitting Rings

Prevent leaks at tubing connection points

Tube End Caps

Cover the ends of tube to keep out dirt and debris

Tube Supports

Slip into plastic and rubber tubing to prevent them from collapsing

Tube End Plugs

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

Tube Fitting Sleeve and Nut Kits

Tube Fitting Sleeve and Nut Kits

Everything you need to create a tight seal between a metal tube and a Yor-Lok fitting

Hose Fittings

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

Hose End Caps

Cover the ends of hose to keep out dirt and debris

Hose Fitting Nuts

Hose Fitting Nuts

Connect fittings and compressed-gas nipples to pressure regulators and torches

Hose Fitting Retaining Chains

Hose Fitting Retaining Chains

Ensure hose end caps and plugs stay connected to the line

Hose End Plugs

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

Pipe Repair Clamps

Pipe Repair Clamps

Fix small holes and cracks in pipe without taking your system apart

Tube Repair Clamps

Tube Repair Clamps

Mend small holes, cracks, and full-circle breaks in tubing without dismantling your system

Air Chucks

Connect air hose to Schrader valves, which are common on tires and hydraulic systems

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

Float Valve Bodies

Float Valve Bodies

Pair with floats and rods to create float valves that meet your needs

Power Transmission

Shaft Couplings

Shaft Couplings

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

Bore Reducers

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

U-Joints

Transfer torque between shafts at an angle; handle more torque and misalignment than flexible shafts

Machinable Shaft Ends

Machinable Shaft Ends

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

Shaft Adapters

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

Flexible Shafts

Flexible Shafts

Snake around curves and obstructions to transmit rotary motion along any path

Rod Ends

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

Rod End Seals

Keep dirt out and lubrication in to extend the life of rod ends

Rod End Nuts

Attach to rods, pipe, and tubing to make pivot and hinge points

Rod End Inserts

Rod End Inserts

Attach to rod ends to increase the amount of misalignment they can handle

Connecting Rods

Connecting Rods

Use with rod ends and swivel joints to link components in push/pull assemblies

Shaft Collars

Hold and position parts on a shaft, or limit shaft movement

Rod Alignment Couplers

Rod Alignment Couplers

Reduce wear on bearings and seals by flexing when the cylinder and load aren't precisely even

Lead Screws and Nuts

Lead Screws and Nuts

Components travel along a screw with broad, square threads to clamp and lift heavy loads

Torque Limiters

Torque Limiters

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

Roller Chain Links

Roller Chain Links

Join chain lengths together

Round Belt Connectors

Round Belt Connectors

Fasten the ends of round belts together

Fastening and Joining

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Coupling Nuts

Connect and extend threaded rods

Standoffs

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

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Brazing Rings

Snap into metal pipe and tubing to form leak-resistant joints more quickly than with hand-fed alloys

Electrical

Conduit-to-Conduit Connectors

Conduit-to-Conduit Connectors

Join pieces of conduit

Conduit Box Connectors

Conduit Box Connectors

Attach conduit to a knockout in electrical boxes

Conduit

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

Material Handling

Shackles

Lift, pull, and anchor heavy loads while keeping them secure with a pin

Quick Links

Join rope, cable, and chain to secure loads

Swivels

Rotate loads to keep rope and chain from twisting and knotting

Chain Rings

Join chains and add connectors for binding, towing, and lifting

Chain Connecting Links

Chain Connecting Links

Attach fittings to lift components or bind, tie down, and pull items

Ring Links

Bend, hammer, or twist closed to connect chain links and attach fittings

Hitch Balls

Mount to hitch inserts and use with hitch receivers and couplers to tow trailers

Hitch Pins

Secure hitch inserts to hitch receivers for towing

Hitch Inserts

Fit into hitch receivers and secure with a hitch pin to create a connection for towing

Heating, Ventilation, and Air Conditioning

Duct and Fittings

Duct and Fittings

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

Duct Airflow Dampers

Duct Airflow Dampers

Regulate airflow to sections of duct

Building and Machinery Hardware

Slip-On Framing and Fittings

Slip-On Framing and Fittings

Insert rails into fittings and tighten screws to make guards, railings, and racks

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

Clamp-On Framing and Fittings

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

Control Cables

Weave around obstructions to operate valves, throttles, and other machinery from a distance

Hinges

Mount to doors and panels so they can swing open and closed

Lubricating

Grease Gun Nozzles

Grease Gun Nozzles

Replace nozzles on grease guns

Grease Gun Tips

Grease Gun Tips

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

Grease Gun Tip Adapters

Grease Gun Tip Adapters

Quickly switch between standard, button-head, and flush-style grease fittings

Grease Fitting Adapters

Grease Fitting Adapters

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

Communication

Tag Rings

Loop onto tags to attach them to lanyards, key rings, and other objects

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