Metric Open-End Wrenches | McMaster-Carr

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System of Measurement

Wrench Style

Drive Size

Wrench Opening Shape

12-Point Sure Grip

Head Style

Drive Style

Drilled Spanner

External 12-Point

External Spline

External Square

Hex with Pilot Recess

Tamper-Resistant Hex

Tamper-Resistant Torx

Sold As

Overall Length

15/16" to 1 1/8"

Ratcheting or Nonratcheting

Finish

Magnesium Phosphate Coated

Phosphate Coated

Titanium Aluminum Nitride (TiAlN) Coated

Titanium Nitride (TiN) Coated

Head Thickness

Material

Aluminum Magnesium

Beryllium Copper

Stainless Steel

Appearance

Number of Pieces

Wrench Type

Opening Angle

Square Drive Size

Number of Heads

Jaw Type

Head Offset Angle

For Use With

Rings, Flanges, and Collars

Round and Irregular Objects

Screws and Nuts

Shut-Off Valves

REACH

RoHS

DFARS Specialty Metals

Export Control Classification Number (ECCN)

Unit of Measure

How can we improve?

3,960 Products

Fastening and Joining

Combination Wrenches

Combination Wrenches

Use the open end when tightening in cramped spaces and the box end when you need extra grip

Open-End Wrenches

Open-End Wrenches

Tighten and loosen fasteners from the top or the side

Adjustable Wrenches

Adjustable Wrenches

Adjust the jaws to fasten different size nuts, bolts, or workpiece

Wrench Heads

Attach to your ratchet wrench and socket extension to turn fasteners where clearance is limited

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Pipe Wrenches

Serrated jaws grasp and turn pipe, conduit, and fittings

Box Wrenches

Grip all sides of a fastener to prevent slipping

Sockets

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

Drum Plug Wrenches

Drum Plug Wrenches

Install and remove screw-in drum plugs; also known as bung wrenches

Socket Wrenches

Socket Wrenches

Apply torque to turn nuts, bolts, and other fasteners without rounding the heads

Bit Sockets

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

Pipe/Valve Wheel Wrenches

Pipe/Valve Wheel Wrenches

Grip and turn pipe with one end and loosen valve wheels with the other

Water Meter Wrenches

Water Meter Wrenches

Turn meter couplings and shut-off valve nuts on water meters

Tank Wrenches

Turn valve stems, regulator inlet nuts, and caps on welding tanks

Valve Wheel Wrenches

Valve Wheel Wrenches

Supply the leverage needed to turn hand wheels on large valves

Spanner Wrenches

Spanner Wrenches

Grab onto holes and slots to turn collars, bearings, and other machine tool components

Drain Wrenches

Install and remove drain traps and fittings, overflow outlets, and toilet inlet spuds

Oil Filter Sockets

Oil Filter Sockets

Twist with a ratchet wrench to adjust filters and other round objects in tight spots

Shut-Off Valve Wrenches

Shut-Off Valve Wrenches

Turn hard-to-reach valves on gas lines, faucets, toilets, and sinks

Socket Inserts

Slip into sockets to keep fasteners from falling out

Socket Adapters

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

Socket Bits

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

L-Keys

Turn fasteners from either end and reach into tight spots

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

Screwdrivers

Tighten and loosen screws

Screwdriver Bits

Screwdriver Bits

Pair with drivers to turn screws

Impact Drivers

More powerful than drills to drive screws through dense material and loosen stuck fasteners

Driver Shafts

Attach to a handle to create your own driver tool, or pair with socket wrenches and power tools

Screw, Pipe, and Stud Extractors

Screw, Pipe, and Stud Extractors

Remove broken screws, pipes, and studs without damaging the threads around them

Containers, Storage, and Furniture

Wrench Organizers

Wrench Organizers

Keep wrenches in order at your workstation or when carrying them around your facility

Socket Organizers

Socket Organizers

Arrange sockets at your workstation or carry them neatly around your facility

Measuring and Inspecting

Torque Gauges

Test the accuracy of torque wrenches and screwdrivers

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