M3 Couplings | McMaster-Carr

Filter by

Thread Size

System of Measurement

Length

Material

Stainless Steel

Hex Size

Gender

Thread Length

Shape

Threading

Partially Threaded

Threaded on Both Ends

Thread Pitch

OD

Hex Length

RoHS

Compliant with Exemptions

DFARS Specialty Metals

Thread Type

Metric Rounded Trapezoidal

Export Control Classification Number (ECCN)

REACH

Mount Type

Thread Fit

Metric Class 6g

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

Finish

Nut Type

Externally Threaded

Shaft Diameter

Tensile Strength

10,000 psi to 19,999 psi

40,000 psi to 99,999 psi

100,000 psi or greater

Hardness

Durometer 75A to Durometer 95A

Durometer 75A to Durometer 60D

Durometer 80A to Durometer 60D

Durometer 95A to Durometer 45D

Durometer 95A to Durometer 60D

Durometer 60D to Durometer 90D

Specifications Met

Performance

Corrosion Resistant

How can we improve?

781 Products

Fastening and Joining

Standoffs

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

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Coupling Nuts

Connect and extend threaded rods

Fluid Handling

Tube Fittings

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

Pipe Nipples and Pipe

Pipe Nipples and Pipe

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

Pipe Fittings

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

Power Transmission

Torque Limiters

Torque Limiters

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

Brakes

Control how much and how quickly your drive system slows down

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

Lead Screw Nuts

Lead Screw Nuts

Mate with lead screws to move components in a straight line

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

Electrical

Electrical Adapters

Electrical Adapters

Change electrical connectors to another type, size, or gender

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.)