NPT Connectors | McMaster-Carr

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Compressed Non-Asbestos Synthetic Fiber

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Adjustable-Angle Elbow

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Acetic Acid (White Vinegar) (5% Concentration)

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29,837 Products

Most Likely Products

Tube Fittings

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

4,903 products

Pipe and Pipe Fittings

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

14,336 products

Electrical Receptacles

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

129 products

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

68 products

All Results

Fluid Handling

Tube Fittings

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

4,903 products

Pipe and Pipe Fittings

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

14,336 products

Hose Fittings

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

2,478 products

Hose

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

147 products

Hose Nozzle Swivels

Rotate to prevent hose from kinking, twisting, and wearing

23 products

Air Chucks

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

15 products

Manifolds

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

508 products

Junction Blocks

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

77 products

Orifice Valves

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

80 products

On-Off Valves

Start and stop flow through a line

2,901 products

Propane Tank Valves

Start and stop the flow of propane from a tank

7 products

Float Valve Bodies

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

61 products

Valve Union Fittings

Mating parts join valves to a line for quick connection and removal

25 products

Flow-Adjustment Valves

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

1 product

Thermocouple and RTD Fittings

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

46 products

Thermocouple Connectors

Join thermocouple probes and wire to thermometers and control panels

10 products

Thermocouple and RTD Connection Heads

Seal out dust and moisture and allow access to thermocouple and RTD sensor connections

7 products

Thermocouple and RTD Mounts

Join thermocouple connectors and probes that have different connection types

7 products

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

31 products

Flow Sights

Visually confirm flow and inspect liquid color and clarity

126 products

Electrical

Electrical Receptacles

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

129 products

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

68 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

3 products

Electrical Cords

Connect equipment and devices to a power supply

2 products

Conduit Box Connectors

Attach conduit to a knockout in electrical boxes

246 products

Conduit Bodies

Access wiring to pull, splice, or redirect it

54 products

Conduit-to-Conduit Connectors

Join pieces of conduit

59 products

Conduit

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

63 products

Conduit Locknuts

Secure threaded conduit fittings to knockouts in electrical boxes

16 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

803 products

Outlet Boxes

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

44 products

Building and Machinery Hardware

Positioning Arms

Mount and position tools, small electronics, and displays

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

22 products

Lubricating

Grease Fitting Adapters

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

24 products

Grease Fittings

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

3 products

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

3 products

Grease Fitting Repair Tools

Remove and repair broken or clogged grease fittings and re-tap threaded holes

1 product

Grease Guns

Manually inject lubrication through grease fittings on equipment and machinery

47 products

Grease Gun Tips

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

44 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

79 products

Coolant Dispenser Hose and Fittings

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

90 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

48 products

Oil Fittings

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

8 products

Oil Brushes

Connect to oil dispensers to brush lubricant onto chain, gears, and conveyors

7 products

Fastening and Joining

Thread Adapters

Join threads of a different type, size, and gender

34 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

27 products

Drum Vents

Prevent drum failure by releasing pressure and vacuum buildup

7 products

Drum Plugs

Seal drum lid openings

2 products

Drum Plug Caps

Access inside drums to fill them

4 products

Facility and Grounds Maintenance

Neutralization Tanks

Treat corrosive chemicals before they drain into sewer systems

4 products

Power Transmission

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

6 products