M4 Couplings | McMaster-Carr

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System of Measurement

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Material

Silicone Rubber

Stainless Steel

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Nut Type

Externally Threaded

Hex Length

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Threading

Partially Threaded

Threaded on Both Ends

OD

Width

RoHS

Compliant with Exemptions

REACH

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

Export Control Classification Number (ECCN)

DFARS Specialty Metals

Thread Fit

Metric Class 6g

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

Pitch

Finish

Shaft Diameter

Mount Type

Thread Type

Metric Rounded Trapezoidal

Tensile Strength

Less than 10,000 psi

10,000 psi to 19,999 psi

40,000 psi to 99,999 psi

100,000 psi or greater

How can we improve?

725 Products

Fastening and Joining

Coupling Nuts

Connect and extend threaded rods

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Standoffs

Separate, position, or connect components in assemblies

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Power Transmission

Shaft Collars

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

U-Joints

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

Rod Alignment Couplers

Rod Alignment Couplers

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

Brakes

Control how much and how quickly your drive system slows down

Torque Limiters

Torque Limiters

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

Rod Ends

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

Connecting Rods

Connecting Rods

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

Precision Lead Screw Nuts

Precision Lead Screw Nuts

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

Building and Machinery Hardware

T-Slotted Framing and Fittings

T-Slotted Framing and Fittings

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

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