Threaded Connectors | McMaster-Carr

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Threading

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Outlet Connection

Connection Method

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61,640 Products

Most Likely Products

Metric Circular Connectors

Plugs, sockets, receptacles, and adapters for equipment with metric connections

330 products

Tube Fittings

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

10,024 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

23,540 products

Metric Circular Cords

Send power and control signals to equipment with metric connections

491 products

Conduit and Fittings

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

901 products

All Results

Electrical Power, Networking, and Controlling

Metric Circular Connectors

Plugs, sockets, receptacles, and adapters for equipment with metric connections

330 products

Mil. Spec. Connectors

Meet strict military standards or are compatible with Mil. Spec. connectors

72 products

Solenoid Valve Connectors

Sockets and receptacles to connect solenoid components, such as valves and motors

13 products

Latching Connectors

Protect connections in wet or harsh environments while keeping them accessible

70 products

Mini Connectors

Plugs, sockets, and receptacles send power and control signals to equipment and automated systems

78 products

Metric Circular Connector Caps

Keep metric circular connectors safe when they're not in use

8 products

Power Connectors

Plugs, sockets, receptacles, and other connectors for powering equipment

70 products

Mil. Spec. Connector Caps

Protect Mil. Spec. connectors when they're not in use

12 products

Coaxial Receptacles

Install in walls and panels and pair with plugs to make coaxial connections

1 product

CB Radio Connectors

Sockets and receptacles to connect CB radios

2 products

RJ45 Connectors

Plugs, sockets, and receptacles to make Ethernet connections

23 products

HDMI Adapters

Convert one HDMI size or style to another

4 products

Mini Connector Caps

Shield mini connectors when they're not in use

13 products

Mini Connector Thread Adapters

Join two connectors that both have internal threads

6 products

Audio Receptacles

Install in walls and panels and pair with plugs to make audio connections

4 products

USB Adapters

Connect mismatched USB cords and devices

11 products

USB Connector Caps

Shield unused USB connectors from damage, contaminants, and moisture

1 product

Metric Circular Cords

Send power and control signals to equipment with metric connections

491 products

Ethernet Cords

Send data between computers, printers, servers, and switches

179 products

Mini Cords

Often used to send power and control signals to automated systems, motors, and pumps

221 products

Solenoid Valve Cords

Connect solenoid components, such as valves and motors

17 products

Sensor Signal Adapter Cords

Send data between sensors and receivers that have different signal types

2 products

Profibus Cords

Transmit data in automation systems and other networks

4 products

USB Cords

Transfer data between computers, printers, and mobile devices

33 products

Power Cords

Connect equipment and devices to a power source

15 products

Distribution Blocks

Distribute electricity from a single power source to several devices in a circuit

8 products

Conduit and Fittings

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

901 products

Cord Grips

Securely connect cords to enclosures while sealing out dirt and moisture

1,121 products

Outlet Boxes

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

44 products

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Grounding Lugs

Create a common grounding path for internal components and circuits, as well as the enclosure body

1 product

Grounding Clamps

Attach grounding wire to equipment to ground electrical current

1 product

Grounding Rods

Link an electrical system to a ground

9 products

Switch Mounts

Mount switches to panel cutouts, tank walls, or conveyors

1 product

Fluid Handling

Tube Fittings

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

10,024 products

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

23,540 products

Pipe Expansion Joints

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

197 products

Rotary Joints

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

102 products

Pipe Traps

Create a seal that prevents the backflow of gas

59 products

Pipe Stub Ends

Connect a pipe flange to a pipe without needing to weld it in place

154 products

Pipe Collars

Clamp pipe passing through floors and walls

24 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

4,967 products

Hose

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

168 products

Air Chucks

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

28 products

Junction Blocks

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

88 products

Manifolds

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

738 products

Hose Kink Absorbers

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

1 product

Hose Crimpers

Crimp ferrules onto hose to secure fittings

16 products

Manual On/Off Valves

Start and stop flow through a line

2,814 products

Orifice Valves

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

873 products

Propane Tank Valves

Start and stop the flow of propane from a tank

9 products

Valve Union Fittings

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

35 products

Solenoid On/Off Valves

A solenoid withstands rapid cycling for applications with frequent opening and closing

692 products

Diverting Valves

Redirect flow between ports

2 products

Float Valve Bodies

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

77 products

Air-Actuated On/Off Valves

Operate on compressed air to start and stop flow faster than motor-driven valves

225 products

Flow-Adjustment Valves

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

3 products

Sampling Valves

Drain a small amount of liquid or gas for inspection without disrupting flow

5 products

Motor-Actuated On/Off Valves

An electric motor handles higher flow rates and pressures than solenoid valves

69 products

Liquid-Dispensing Metering Valves

Program to dispense a specific amount of liquid every time and shut off when set amount is reached

3 products

Thermocouple and RTD Fittings

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

50 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

12 products

Flow Sights

Visually confirm flow and inspect liquid color and clarity

146 products

Flowmeter Tees

Pair with a sensor and a display to measure a liquid's flow in hard-to-access areas

6 products

Liquid-Level Gauges

Monitor fluid levels in containers

1 product

Pressure Test Fittings

Create a temporary connection point for gauges and other testing equipment

31 products

Strainers

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

7 products

Fastening and Joining

Coupling Nuts

Connect and extend threaded rods

620 products

Hex Nuts

Handle most general fastening needs

33 products

Thread Adapters

Join threads of a different type, size, and gender

61 products

Standoffs

Separate, position, or connect components in assemblies

5,099 products

Standoff Caps

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

66 products

Weld Nuts

Weld to metal surfaces to add permanent threads

589 products

Tube-Connecting Nuts

Push inside tubes to join them with a threaded stud instead of welding

21 products

Adhesive-Mount Nuts

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

166 products

Snap-In Nuts

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

79 products

Dowel Nuts

Form joints in blind holes in wood

11 products

Binding Barrels

Create custom low-profile fasteners with binding barrel posts, caps, and screws

872 products

Studs

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

637 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

98 products

Joint Clamps for Wood

Make secure joints between boards, butcher blocks, and countertops

3 products

Jack Screws

Create vibration-resistant connections between D-sub cords and panels

11 products

Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

36 products

Single-End Studs

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

184 products

Anchors

Secure anything from signs to heavy machinery in concrete, brick, and drywall

745 products

Fabric Snaps

Complete snaps that join fabric together or fasten fabric to surfaces

9 products

Brazing Rings

Snap into unthreaded pipe fittings for an extra-strong, leak-resistant connection

5 products

Lubricating

Grease Fitting Adapters

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

41 products

Coolant Hose and Fittings

Build a custom system to deliver coolant, cutting oil, water, or air in any direction

109 products

Grease Fittings

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

323 products

Grease Guns

Manually inject lubrication through grease fittings on equipment and machinery

76 products

Coolant Nozzles

Dispense coolant onto workpieces or tools directly from a tank

69 products

Grease Gun Tips

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

84 products

Grease Gun Swivels

Move grease-dispensing guns in any direction without kinking the outlet hose

10 products

Coolant Nozzle and Hose Adapters

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

4 products

Oil Fittings

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

17 products

Oil Brushes

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

28 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

103 products

Grease Fitting Repair Tools

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

2 products

Grease Fitting Manifolds

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

3 products

Building and Machinery Hardware

Positioning Arms

Mount and position tools and other small equipment

58 products

Tripod Head Adapters

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

1 product

Strut Channel Nuts

Fasten on threaded rod to connect components to strut channel

1 product

T-Slotted Framing Manifolds

Distribute air and liquid from a single supply to multiple areas in a T-slotted framing structure

22 products

Leveling Mount Inserts

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

113 products

Facility and Grounds Maintenance

Toilet Hose

Run water from your building's supply line to toilets

8 products

Sink Faucet Hose

Hook up faucets to a water supply

8 products

Faucet Spout Thread Adapters

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

4 products

Appliance Hose

Connect water heaters, washing machines, and other appliances to a supply or drain line

6 products

Neutralization Tanks

Treat corrosive chemicals before they drain into sewer systems

4 products

Water Supply Stop Valves

Shut off water to faucets, toilets, and fountains

11 products

Garden Hose Valves

Start and stop the flow of water through your garden hose

30 products

Material Handling

Quick Links

Join rope, cable, and chain to secure loads

109 products

Turnbuckle Nuts

Tighten against a turnbuckle body to prevent the end fitting from unscrewing

34 products

Hydraulic Jack Hose and Fittings

Convey hydraulic fluid between hydraulic jacks and their power source

21 products

Vacuum Cup and Lifter Mounts

Mount vacuum cups or vacuum lifters to surfaces

2 products

Screw Jack End Fittings

Thread onto screw jacks to create pivot points with clevis rod ends and other linkages

4 products

Vacuum Fittings

Connect to vacuum cups and compressed air to create suction; also known as venturi devices

14 products

Conveyor T-Slot Bolts

Drop into the T-slot to mount components

12 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 Plugs

Seal drum lid openings

27 products

Drum Faucets

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

32 products

Drum Plug Caps

Access inside drums to fill them

4 products

Drum Vents

Prevent drum failure by releasing pressure and vacuum buildup

7 products

Syringe Thread Adapters

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

3 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

Power Transmission

Lead Screw Nuts

Mate with lead screws to move components in a straight line

43 products

Connecting Rods

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

808 products

Electric Slides

Move parts with precision in electronics, robotics, and other automated processes

74 products

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

28 products

Torque Limiters

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

10 products

Hydraulic On/Off Valves

Control the flow in high-pressure hydraulic systems

48 products

Safety Equipment

Fire Hose Fittings

Mount your fire hose to hydrants and washdown equipment, or join lengths of hose

86 products

Lighting

Lamp Pipe Fasteners

Fasten lamp pipe to a socket or base to build and repair lamps

2 products

Lamp Pipe

Connect lamp components and conceal wires when building or repairing lamps

18 products

Light Sockets

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

6 products