Metric Extensions | McMaster-Carr

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Carbide-Tipped Steel

Stainless Steel

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Export Control Classification Number (ECCN)

REACH

RoHS

Compliant with Exemptions

DFARS Specialty Metals

For Adapting

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Nut Type

Stud Length

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Threaded Through Hole

Unthreaded Through Hole

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External 12-Point

Thread Fit

Metric Class 6g

Metric Class 6H

Unified Standard Class 2A

Unified Standard Class 2B

Finish

Specifications Met

Tensile Strength

Hardness

How can we improve?

3,465 Products

Fastening and Joining

Thread Adapters

Thread Adapters

Join threads of a different type, size, and gender

Coupling Nuts

Connect and extend threaded rods

Hex Nuts

Handle most general fastening needs

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

Socket Bits

Switch out worn or damaged bits instead of replacing your entire bit socket

Sockets

Turn fasteners with an external drive style without slipping and damaging the drive

Building and Machinery Hardware

Adjustable Handles

Adjustable Handles

Lift and turn to easily position and tighten components; also called clamping handles

Crank Handles

The offset handle gives extra leverage to maximize turning force

Electrical

Electrical Adapters

Electrical Adapters

Change electrical connectors to another type, size, or gender

Electrical Plugs

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

Electrical Sockets

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

Power Transmission

Springs

Apply and absorb force with compression, die, extension, torsion, and disc springs

Material Handling

Robot Tool Extensions

Robot Tool Extensions

Attach tools or extensions to robot arms

Conveyor Guide Clamps

Conveyor Guide Clamps

Connect conveyor guides to each other and secure them in place

Facility and Grounds Maintenance

Wash Gun Nozzle Extensions

Wash Gun Nozzle Extensions

Attach to your wash gun nozzle to clean places out of arm's reach

Fabricating and Machining

Taps

Cut internal threads for fasteners, pipe, conduit, and more

Drill Bits

Create holes in metal, wood, plastic, concrete, and more

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