Threaded Connectors | McMaster-Carr

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52,504 Products

Most Likely Products

Tube Fittings

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

8,780 products

Pipe Fittings

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

12,694 products

Hose Fittings

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

4,821 products

Conduit and Conduit Fittings

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

673 products

All Results

Fluid Handling

Tube Fittings

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

8,780 products

Tube Fitting Nuts

Tighten to create a strong seal between tube and tube fittings

20 products

Tube Fitting Rings

Prevent leaks at tubing connection points

6 products

Tube End Caps

Cover the ends of tube to keep out dirt and debris

15 products

Tube End Plugs

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

15 products

Pipe Fittings

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

12,694 products

Pipe Nipples and Pipe

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

7,400 products

Pipe Flanges

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

1,173 products

Expansion Joints

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

159 products

Rotary Unions

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

105 products

Pipe Fitting Clamps

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

20 products

Pipe Caps

Cover the ends of pipe to keep out dirt and debris

9 products

Pipe Bleed Rings

Access inside a pipe line to vent pressure, drain liquid, and take samples

22 products

Hose Fittings

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

4,821 products

Hose

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

250 products

Hose Fitting Nuts

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

59 products

Hose Nozzle Swivels

Rotate to prevent hose from kinking, twisting, and wearing

24 products

Hose End Caps

Cover the ends of hose to keep out dirt and debris

9 products

Air Chucks

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

16 products

Manifolds

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

631 products

Junction Blocks

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

77 products

Hose Kink Absorbers

Prevent garden hose from kinking to ensure maximum water flow and extend hose life

1 product

Hose Crimpers

Crimp ferrules onto hose to secure fittings

2 products

Orifice Valves

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

89 products

On-Off Valves

Start and stop flow through a line

3,382 products

Diverting Valves

Redirect flow between ports

2 products

Propane Tank Valves

Start and stop the flow of propane from a tank

3 products

Float Valve Bodies

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

61 products

Flow-Adjustment Valves

Gradually open and close to control the volume of air and liquids though a line

3 products

Thermocouple and RTD Fittings

Alter probe immersion depth or adapt unthreaded connections for use with threaded tanks and heads

50 products

Thermocouple and RTD Mounts

Join thermocouple connectors and probes that have different connection types

12 products

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

6 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

28 products

Flow Sights

Visually confirm flow and inspect liquid color and clarity

144 products

Flowmeters

Measure the flow rate of a liquid or gas

6 products

Strainers

Install next to valves and pumps to catch debris in your line

4 products

Electrical

Conduit and Conduit Fittings

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

673 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

927 products

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Outlet Boxes

House electrical components such as on-off switches, receptacles, and dimmer knobs

42 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

3 products

Electrical Connector Caps

Protect data connectors when not in use

8 products

Electrical Receptacles

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

5 products

Switch Mounts

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

1 product

Grounding Rods

Link an electrical system to a ground

6 products

Fastening and Joining

Coupling Nuts

Connect and extend threaded rods

620 products

Hex Nuts

Handle most general fastening needs

23 products

Thread Adapters

Join threads of a different type, size, and gender

57 products

Standoffs

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

3,492 products

Standoff Caps

Create a finished look on standoffs and protect them from dirt and debris

66 products

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

3 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

70 products

Studs

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

674 products

Weld Nuts

Weld to metal surfaces to add permanent threads

333 products

Snap-In Nuts

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

37 products

Adhesive-Mount Nuts

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

88 products

Binding Barrels and Screws

Thread together for a low-profile fastener

600 products

Single-End Studs

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

184 products

Fabric Snaps

Complete snaps that join fabric together or fasten fabric to surfaces

9 products

Brazing Rings

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

5 products

Building and Machinery Hardware

Positioning Arms

Mount and position tools, small electronics, and displays

3 products

Tripod Head Adapters

Mount ball-grip components such as arms and device grips to the top of tripods

1 product

Strut Channel Framing and Fittings

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

1 product

T-Slotted Framing and Fittings

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

34 products

Leveling Mount Inserts

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

15 products

Lubricating

Grease Fitting Adapters

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

31 products

Grease Fittings

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

212 products

Grease Gun Tips

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

45 products

Grease Gun Tip Adapters

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

1 product

Grease Gun Nozzles

Replace nozzles on grease guns

64 products

Coolant Dispenser Hose and Fittings

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

98 products

Coolant Hose and Nozzle Adapters

Connect threaded coolant hose and nozzles to coolant supply ports on equipment such as CNC machines

4 products

Coolant Nozzles

Dispense coolant onto workpieces or tools directly from a tank

56 products

Oil Fittings

Install in engine blocks and other machinery to pour in oil while keeping dust out

10 products

Containers, Storage, and Furniture

Drum Plug Adapters

Screw into plastic drum openings to replace threads that can become damaged with frequent use

1 product

Drum Faucets

Control the flow of liquid from drums, tanks, carboys, and other containers

28 products

Drum Vents

Prevent drum failure by releasing pressure and vacuum buildup

7 products

Drum Plugs

Seal drum lid openings

19 products

Drum Plug Caps

Access inside drums to fill them

4 products

Syringe Thread Adapters

Change connections on syringes, dispensing tips, and needles to luer lock or threaded connections

3 products

Material Handling

Quick Links

Join rope, cable, and chain to secure loads

109 products

Measuring and Inspecting

Hose Coupling Size-Identification Kits

Match your hose coupling to one of the plugs to determine its size without measuring

1 product

Facility and Grounds Maintenance

Faucet Spout Thread Adapters

Connect the female end of your garden hose to a faucet spout

4 products

Power Transmission

Connecting Rods

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

808 products

Lighting

Lamp Pipe

Connect lamp components and conceal wires when building or repairing lamps

3 products

Light Sockets

Install or replace sockets in fixtures for standard household, tubular, compact, or miniature bulbs

4 products