Metric Extensions | McMaster-Carr

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

REACH

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

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For Adapting

Shape

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Threaded Through Hole

Unthreaded Through Hole

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Unified Standard Class 2A

Unified Standard Class 2B

Nut Type

Specifications Met

Tensile Strength

Hardness

3,463 Products

Fastening and Joining

Thread Adapters

Join threads of a different type, size, and gender

2,334 products

Coupling Nuts

Connect and extend threaded rods

183 products

Hex Nuts

Handle most general fastening needs

14 products

Hanger Bolts

Suspend pipe and other fixtures with wire or cable ties

24 products

Sockets

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

15 products

Socket Bits

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

18 products

Measuring and Inspecting

Probe Stylus Accessories

Add components that extend length, adapt threads, or hold multiple styli at once

9 products

Power Transmission

Extension Springs

When stretched, springs pull their ends back together

338 products

Facility and Grounds Maintenance

Wash Gun Nozzle Extensions

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

2 products

Electrical Power, Networking, and Controlling

Power Connectors

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

33 products

Latching Connector Inserts

Male and female inserts for making connections inside hoods and bases

4 products

Power Cords

Connect equipment and devices to a power source

4 products

Fabricating and Machining

Taps

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

36 products

Drill Bits

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

86 products

Material Handling

Robot Tool Extensions

Attach extensions to robot arms

9 products

Building and Machinery Hardware

Adjustable Handles

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

323 products

Crank Handles

The offset handle gives extra leverage to maximize turning force

29 products