Torque Wrench Heads | McMaster-Carr

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Less than 1,000 ft·lbf

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Ratcheting

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75 Products

Changeable-Head Torque Wrenches

Change heads to use these tools as an open-end, box, square drive, or hex-key wrench. The handle and head combination you choose may have different maximum torque values. Do not exceed the lower value. The handles come with a calibration certificate, which includes test measurements that confirm accuracy.

You can tighten fasteners that require less torque than the values listed, but the accuracy ratings apply only within the specified range.

Square Drive Heads

Nonratcheting

Ratcheting

Repair Kits

Ratcheting—Ratcheting square drive heads allow you to turn fasteners in tight spaces without removing and repositioning the tool.

Repair Kits—Include the components needed to replace a damaged ratcheting mechanism.

	Torque Wrenches					Repair Kits
	Square Drive Size	Max. Torque	Color		Each		Each
Nonratcheting



		1/4"	250 in·lbf	Black	0000000	000000	———	0


		3/8"	1,250 in·lbf	Black	0000000	00000	———	0
		1/2"	2,500 in·lbf	Black	0000000	00000	———	0


		Ratcheting



				1/4"	250 in·lbf	Black	0000000	00000	000000000	000000


				3/8"	1,250 in·lbf	Black	0000000	000000	000000000	00000
				1/2"	2,500 in·lbf	Black	0000000	000000	000000000	00000

Hex Key Heads

Image of Product. Front orientation. Torque Wrenches. Changeable-Head Torque Wrenches, Hex Key.

	Max. Torque	Color		Each
Nonratcheting



	3/32"	30 in·lbf	Black	00000000	000000


	5/32"	135 in·lbf	Black	00000000	00000
	3/16"	235 in·lbf	Black	00000000	00000
	1/4"	450 in·lbf	Black	00000000	00000
	5/16"	850 in·lbf	Black	00000000	00000

Open End Heads

	Max. Torque	Opening Angle	Color		Each
12-Point Sure-Grip Opening—Nonratcheting



	5/16"	150 in·lbf	30°	Black	00000000	000000


	7/16"	250 in·lbf	30°	Black	00000000	00000
	1/2"	300 in·lbf	30°	Black	00000000	00000
	9/16"	350 in·lbf	30°	Black	00000000	00000
	5/8"	400 in·lbf	30°	Black	00000000	00000
	3/4"	600 in·lbf	30°	Black	00000000	00000
	7/8"	800 in·lbf	30°	Black	00000000	00000
	15/16"	900 in·lbf	30°	Black	00000000	000000


	Hex Opening—Nonratcheting



			1/4"	100 in·lbf	15°	Black	00000000	00000


			5/16"	150 in·lbf	15°	Black	00000000	00000
			3/8"	200 in·lbf	15°	Black	00000000	00000
			7/16"	300 in·lbf	15°	Black	00000000	00000
			1/2"	350 in·lbf	15°	Black	00000000	00000
			9/16"	400 in·lbf	15°	Black	00000000	00000
			5/8"	600 in·lbf	15°	Black	00000000	00000
			11/16"	800 in·lbf	15°	Black	00000000	00000
			3/4"	1,000 in·lbf	15°	Black	00000000	00000
			13/16"	1,250 in·lbf	15°	Black	00000000	00000
			7/8"	1,500 in·lbf	15°	Black	00000000	00000


			15/16"	1,750 in·lbf	15°	Black	00000000	00000
			1"	2,000 in·lbf	15°	Black	00000000	00000
			1 1/16"	2,250 in·lbf	15°	Black	00000000	000000
			1 1/8"	2,500 in·lbf	15°	Black	00000000	000000
			1 1/4"	3,000 in·lbf	15°	Black	00000000	000000
			8 mm	141 in·lbf	15°	Black	00000000	00000
			10 mm	194 in·lbf	15°	Black	00000000	00000
			11 mm	300 in·lbf	15°	Black	00000000	00000
			12 mm	345 in·lbf	15°	Black	00000000	00000
			13 mm	345 in·lbf	15°	Black	00000000	00000


			14 mm	398 in·lbf	15°	Black	00000000	00000
			15 mm	592 in·lbf	15°	Black	00000000	00000
			16 mm	592 in·lbf	15°	Black	00000000	00000
			17 mm	796 in·lbf	15°	Black	00000000	00000
			18 mm	796 in·lbf	15°	Black	00000000	00000
			19 mm	1,000 in·lbf	15°	Black	00000000	00000
			22 mm	1,495 in·lbf	15°	Black	00000000	00000
			24 mm	1,743 in·lbf	15°	Black	00000000	00000
			27 mm	2,248 in·lbf	15°	Black	00000000	00000

Box Heads

	Max. Torque	Color		Each
12-Point Opening—Nonratcheting



	1/4"	250 in·lbf	Black	00000000	000000


	5/16"	350 in·lbf	Black	00000000	00000
	3/8"	450 in·lbf	Black	00000000	00000
	7/16"	650 in·lbf	Black	00000000	00000
	1/2"	850 in·lbf	Black	00000000	00000
	9/16"	1,050 in·lbf	Black	00000000	00000
	5/8"	1,250 in·lbf	Black	00000000	00000
	11/16"	1,450 in·lbf	Black	00000000	00000
	3/4"	1,800 in·lbf	Black	00000000	00000
	7/8"	2,400 in·lbf	Black	00000000	00000
	15/16"	2,700 in·lbf	Black	00000000	00000


	1"	3,000 in·lbf	Black	00000000	00000
	1 1/16"	3,150 in·lbf	Black	00000000	000000
	1 1/4"	3,600 in·lbf	Black	00000000	000000
	10 mm	442 in·lbf	Black	00000000	00000
	11 mm	646 in·lbf	Black	00000000	00000
	12 mm	849 in·lbf	Black	00000000	00000
	13 mm	849 in·lbf	Black	00000000	00000
	14 mm	1,053 in·lbf	Black	00000000	00000
	15 mm	1,247 in·lbf	Black	00000000	00000
	17 mm	1,442 in·lbf	Black	00000000	00000


	19 mm	1,796 in·lbf	Black	00000000	00000
	24 mm	2,699 in·lbf	Black	00000000	00000