McMaster-Carr

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	System of Measurement System of Measurement

Inch

Metric

ft.-lbs.

in.-lbs.

	Square Drive Size Square Drive Size

	Head Style Head Style


Standard	Flex

Offset

	Ratcheting or Nonratcheting Ratcheting or Nonratcheting

Ratcheting

Nonratcheting

	Wrench Style Wrench Style


Square Drive	Box

Socket	Open End

Combination

	Overall Length Overall Length

1 7/8"-2 3/4"

3 1/8"-5 1/2"

3 1/2"-5 3/8"

3 1/2"-5 1/2"

3 3/4"-5 1/2"

3 7/8"-5 3/8"

4 1/4"-6 3/4"

4 1/4"-8"

4 1/4"-9 1/8"

4 3/8"

4 1/2"

4 1/2"-6 7/8"

4 1/2"-8 1/8"

4 1/2"-9 1/4"

4 15/16"-11 1/16"

4 15/16"-12"

5"-10 1/8"

5 1/8"-9 1/8"

5 7/16"-7 1/4"

5 1/2"-7 1/4"

5 1/2"-8 1/8"

5 1/2"-9 5/16"

5 1/2"-9 5/8"

5 1/2"-9 3/4"

6 1/4"-9 5/8"

7 1/16"-12"

8 3/4"-12 5/8"

12"-17 1/4"

24"-40"

	Wrench Type Wrench Type

Standard

Torque

Impact

	Head Shape Head Shape


Oval	Round

	Finish Finish

	Material Material

	Size Size

	Individual/Set Individual/Set

Individual

Set

	For Drive Style For Drive Style


External Hex	External Square	Slotted

External 5-Point	External 12-Point	Phillips

Pozidriv®	Square	Torx

External Torx	External Torx Plus	Hex

External Spline

	Turn Required to Ratchet Turn Required to Ratchet

	Power Source Power Source

	Opening Shape Opening Shape


6-Point	4-Point

5-Point	12-Point

Rounded	Torx

Spline

	Socket Type Socket Type

	Socket
	Ratchet Adapter
	Hex Shank to Square Drive Adapter

	Grip Material Grip Material

	For Use With For Use With

	Torque Adjustability Torque Adjustability

Factory Set

Adjustable

	Maximum Torque Maximum Torque

	Torque Wrench Type Torque Wrench Type

Torque Limiting

Torque Measuring

	Driver Style Driver Style


Driver	L-Key

T-Handle

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800 Products

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Turn screws and nuts with these tool-box basics.

Fire Hose Fitting and
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Pipe Wrenches

Grip pipe and conduit as well as tighten and loosen fittings.

Other Drive Ratchets

Drivers, Keys, and Bits

Internal and External Threading Sets

Tap Wrenches

Attach a tap to a wrench so you can turn it by hand.

Handles and Knobs

Terms and Conditions and Privacy Policy

Wrenches and Sockets

Wrenches and Sockets

Fire Hose Fitting andHydrant Wrenches

Pipe Wrenches

Other Drive Ratchets

Drivers, Keys, and Bits

Internal and External Threading Sets

Tap Wrenches

Handles and Knobs

Fire Hose Fitting and
Hydrant Wrenches