18 mm Wrenches | McMaster-Carr

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System of Measurement

Wrench Style

Drive Size

Wrench Opening Shape

Number of Pieces

Head Style

Sold As

Ratcheting

Drive Style

External 12-Point

External Spline

External Square

Overall Length

3 1/4" to 5 1/2"

Container Type

Fabric Roll-Up Pouch

Metal Clip Rail

Plastic Clip Rail

Plastic Organizer

Plastic Roll-Up Pouch

Finish

Phosphate Coated

Grade

Relative Length

Appearance

Material

Aluminum Bronze

Length

3 1/4" to 5 1/2"

Head Thickness

Performance

Changeable Head

Corrosion Resistant

Reversible Ratcheting

Tight Clearance

Square Drive Size

RoHS

REACH

Wrench Type

Opening Angle

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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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

Wrench Heads

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

Sockets

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

Box Wrenches

Grip all sides of a fastener to prevent slipping

Bit Sockets

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

Torque Wrenches

Torque Wrenches

Avoid overtightening and damaging fasteners by applying a specific torque

Socket Wrenches

Socket Wrenches

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

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

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