20 mm Wrenches | McMaster-Carr

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System of Measurement

Drive Size

Wrench Style

Wrench Opening Shape

Number of Pieces

Head Style

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Drive Style

External 12-Point

External Square

Finish

Phosphate Coated

Ratcheting

Overall Length

4 1/2" to 11 7/8"

4 1/2" to 12 3/8"

5 1/4" to 12 3/4"

Appearance

Grade

Head Offset Angle

Relative Length

Square Drive Size

Container Type

Fabric Roll-Up Pouch

Metal Clip Rail

Plastic Clip Rail

Plastic Roll-Up Pouch

For Use With

Screws and Nuts

Head Thickness

Length

4 1/2" to 11 7/8"

4 1/2" to 12 3/8"

5 1/4" to 12 3/4"

Opening Angle

Socket Style

RoHS

REACH

DFARS Specialty Metals

Export Control Classification Number (ECCN)

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61 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

Wrench Heads

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

Open-End Wrenches

Open-End Wrenches

Tighten and loosen fasteners from the top or the side

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

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.)