M8 Couplings | McMaster-Carr

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Material

Length

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Metric Rounded Trapezoidal

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Fully Threaded

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Threaded on Both Ends

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Compliant with Exemptions

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REACH

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Compliant

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Export Control Classification Number (ECCN)

Thread Fit

Unified Standard Class 2A

Unified Standard Class 2B

Shank Thread Size

Specifications Met

927 Products

Fastening and Joining

Coupling Nuts

Connect and extend threaded rods

17 products

Thread Adapters

Join threads of a different type, size, and gender

471 products

Standoffs

Separate, position, or connect components in assemblies

2 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

4 products

Threaded Rod Collars

Hold and position parts on a threaded rod

2 products

Power Transmission

Rod Alignment Couplers

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

6 products

Rod End Nuts

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

2 products

Connecting Rods

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

57 products

Rod Ends

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

98 products

Shaft Collars

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

7 products

Precision Lead Screw Nuts

Pair with precision lead screws for accurate starts and stops in your assembly

6 products

Fluid Handling

Pipe and Fittings

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

36 products

Hose Fittings

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

20 products

Tube Fittings

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

36 products

Air-Actuated On/Off Valves

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

4 products

Manual On/Off Valves

Start and stop flow through a line

23 products

Motor-Actuated On/Off Valves

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

4 products

Lubricating

Grease Fitting Adapters

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

4 products

Electrical Power, Networking, and Controlling

USB Cords

Transfer data between computers, printers, and mobile devices

1 product

Metric Circular Connectors

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

47 products

Power Receptacles

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

5 products

Conduit Locknuts

Secure threaded conduit fittings to knockouts in outlet boxes or enclosures

1 product

Material Handling

Conveyor T-Slot Bolts

Drop into the T-slot to mount components

12 products

Building and Machinery Hardware

T-Slotted Framing Fasteners

Secure brackets and other accessories to T-slotted rails

53 products