ISO Standard L-Keys | McMaster-Carr

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Fit into tight spaces where you have less room to swing

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The most common option have a balanced length for everyday use

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L-Keys

The highest quality L-keys you can buy for tightening and loosening screws. Our L-keys are precision manufactured to tight tolerances for an exact fit.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Short—A short long leg fits into tight spaces where you have less room to swing, making these ideal for confined areas.

Long—The most common option, these L-keys have a balanced length for everyday reach and torque.

Extra Long—Reach deep fasteners with the extra-long leg on these L-keys. Flip them around and grip the long leg with two hands for extra leverage to loosen stubborn screws.

		Length						Each		Package
	Drive Size, mm	Overall	Relative	Long Leg	Short Leg	Finish	Specs. Met		Each	Pkg. Qty.		Pkg.
Alloy Steel







				Hex

				0.70	1 1/4"	Short	1 1/4"	1/4"	Chrome Plated	DIN 911, ISO 2936	9766N35	00000	50	9766N736	000000


				0.70	2 5/8"	Long	2 5/8"	1/4"	Chrome Plated	DIN 911, ISO 2936	9766N39	0000	50	9766N741	00000
				0.90	1 1/4"	Short	1 1/4"	3/8"	Chrome Plated	DIN 911, ISO 2936	9766N15	0000	25	9766N723	00000
				0.90	2 11/16"	Long	2 11/16"	3/8"	Chrome Plated	DIN 911, ISO 2936	9766N27	0000	50	9766N731	00000
				1.3	1 11/16"	Short	1 5/8"	1/2"	Chrome Plated	DIN 911, ISO 2936	9766N16	0000	50	9766N724	00000
				1.3	2 7/8"	Long	2 13/16"	1/2"	Chrome Plated	DIN 911, ISO 2936	9766N28	0000	50	9766N732	00000
				1.5	1 3/4"	Short	1 11/16"	1/2"	Nickel Plated	DIN 911, ISO 2936	53475A31	0000	10	53475A311	0000
				2	1 15/16"	Short	1 7/8"	9/16"	Nickel Plated	DIN 911, ISO 2936	53475A32	0000	10	53475A321	0000
				2	4 1/8"	Extra Long	4 1/16"	5/8"	Chrome Plated	DIN 911, ISO 2936	9766N45	0000	50	9766N746	00000
				2.5	2 1/8"	Short	2 1/16"	5/8"	Nickel Plated	DIN 911, ISO 2936	53475A33	0000	10	53475A331	0000
				2.5	4 5/8"	Extra Long	4 1/2"	11/16"	Chrome Plated	DIN 911, ISO 2936	9766N46	0000	50	9766N747	00000


				3	2 7/16"	Short	2 5/16"	11/16"	Nickel Plated	DIN 911, ISO 2936	53475A34	0000	10	53475A341	0000
				3	5 3/16"	Extra Long	5 1/16"	3/4"	Chrome Plated	DIN 911, ISO 2936	9766N47	0000	50	9766N748	00000
				3.5	2 11/16"	Short	2 9/16"	13/16"	Chrome Plated	DIN 911, ISO 2936	9766N36	0000	50	9766N737	00000
				3.5	5 3/8"	Extra Long	5 1/4"	13/16"	Chrome Plated	DIN 911, ISO 2936	9766N41	0000	50	9766N742	000000
				4	2 3/4"	Short	2 5/8"	7/8"	Nickel Plated	DIN 911, ISO 2936	53475A35	0000	10	53475A351	0000
				4	2 13/16"	Short	2 11/16"	7/8"	Chrome Plated	DIN 911, ISO 2936	9766N17	0000	50	9766N725	00000
				4	5 3/4"	Extra Long	5 9/16"	7/8"	Chrome Plated	DIN 911, ISO 2936	9766N29	0000	50	9766N733	000000
				4.5	3 1/16"	Short	2 7/8"	1"	Black Phosphate Coated	DIN 911, ISO 2936	9542N71	0000	100	9542N444	00000
				4.5	3 1/16"	Short	2 7/8"	1"	Chrome Plated	DIN 911, ISO 2936	9766N37	0000	50	9766N738	00000
				4.5	4 11/16"	Long	4 1/2"	1"	Black Phosphate Coated	DIN 911, ISO 2936	9542N78	0000	100	9542N452	00000


				4.5	6 1/8"	Extra Long	5 15/16"	1"	Chrome Plated	DIN 911, ISO 2936	9766N42	0000	50	9766N743	000000
				5	3 3/16"	Short	3"	1"	Nickel Plated	DIN 911, ISO 2936	53475A36	0000	10	53475A361	0000
				5	3 1/4"	Short	3 1/16"	1 1/16"	Chrome Plated	DIN 911, ISO 2936	9766N18	0000	50	9766N726	00000
				5	4 7/8"	Long	4 11/16"	1 1/16"	Chrome Plated	DIN 911, ISO 2936	9766N48	0000	50	9766N749	00000
				5	6 1/2"	Extra Long	6 5/16"	1 1/16"	Chrome Plated	DIN 911, ISO 2936	9766N31	0000	50	9766N734	00000
				5.5	3 1/2"	Short	3 1/4"	1 1/8"	Chrome Plated	DIN 911, ISO 2936	9766N38	0000	25	9766N739	00000
				5.5	5 1/8"	Long	4 7/8"	1 1/8"	Black Phosphate Coated	DIN 911, ISO 2936	9542N79	0000	50	9542N453	00000
				5.5	7"	Extra Long	6 13/16"	1 1/8"	Black Phosphate Coated	DIN 911, ISO 2936	9542N113	0000	50	9542N443	000000
				6	3 5/8"	Short	3 3/8"	1 3/16"	Nickel Plated	DIN 911, ISO 2936	53475A37	0000	10	53475A371	00000
				6	5 3/4"	Long	5 1/2"	1 1/4"	Chrome Plated	DIN 911, ISO 2936	9766N49	0000	50	9766N751	00000


				6	7"	Extra Long	6 3/4"	1 1/4"	Chrome Plated	DIN 911, ISO 2936	9766N32	0000	25	9766N735	00000
				8	4"	Short	3 11/16"	1 5/16"	Nickel Plated	DIN 911, ISO 2936	53475A39	0000	10	53475A391	00000
				10	4 9/16"	Short	4 3/16"	1 1/2"	Nickel Plated	DIN 911, ISO 2936	53475A42	0000	10	53475A421	00000
				11	4 15/16"	Short	4 1/2"	1 5/8"	Black Phosphate Coated	DIN 911, ISO 2936	9542N72	0000	50	9542N445	000000
				11	8 5/16"	Long	7 7/8"	1 5/8"	Black Phosphate Coated	DIN 911, ISO 2936	9542N81	0000	25	9542N454	000000
				12	5 1/4"	Short	4 13/16"	1 3/4"	Black Phosphate Coated	DIN 911, ISO 2936	9542N73	0000	50	9542N446	000000
				12	9 1/8"	Long	8 11/16"	1 3/4"	Black Phosphate Coated	DIN 911, ISO 2936	9542N82	0000	25	9542N455	000000
				13	5 9/16"	Short	5 1/16"	1 7/8"	Black Phosphate Coated	DIN 911, ISO 2936	9542N74	0000	25	9542N447	000000
				13	9 15/16"	Long	9 7/16"	1 7/8"	Black Phosphate Coated	DIN 911, ISO 2936	9542N83	0000	10	9542N456	00000
				14	5 7/8"	Short	5 3/8"	2 3/16"	Black Phosphate Coated	DIN 911, ISO 2936	9542N75	0000	25	9542N448	000000


				14	5 7/8"	Short	5 3/8"	2 3/16"	Chrome Plated	DIN 911, ISO 2936	9766N19	0000	—	———	0
				14	10 13/16"	Long	10 1/4"	2 3/16"	Black Phosphate Coated	DIN 911, ISO 2936	9542N84	0000	10	9542N457	00000
				14	10 13/16"	Long	10 1/4"	2 3/16"	Chrome Plated	DIN 911, ISO 2936	9766N33	00000	—	———	0
				17	6 13/16"	Short	6 1/8"	2 3/8"	Black Phosphate Coated	DIN 911, ISO 2936	9542N76	0000	20	9542N449	000000
17				11 11/16"	Long	11"	2 3/8"	Black Phosphate Coated	DIN 911, ISO 2936	9542N85	00000	10	9542N458	000000
17	11 11/16"			Long	11"	2 3/8"	Chrome Plated	DIN 911, ISO 2936	9766N34	00000	—	———	0
19	7 5/8"			Short	6 7/8"	2 11/16"	Black Phosphate Coated	DIN 911, ISO 2936	9542N77	00000	15	9542N451	000000
19	12 3/8"			Long	11 5/8"	2 11/16"	Black Phosphate Coated	DIN 911, ISO 2936	9542N86	00000	5	9542N459	00000

L-Key Sets

Plastic

Caddy

Keep the most common L-key sizes in one portable set so the right size is always ready. These L-keys are precision manufactured to tight tolerances for an exact fit.

Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.

Short—A short long leg fits into tight spaces where you have less room to swing, making these ideal for confined areas.

	Finish	Container Type	Specifications Met		Each
Alloy Steel







	Hex

	9	1.5 mm Hex L-Key (2" O'all Lg.) 2 mm Hex L-Key (2 1/16" O'all Lg.) 2.5 mm Hex L-Key (2 1/4" O'all Lg.) 3 mm Hex L-Key (2 9/16" O'all Lg.) 4 mm Hex L-Key (2 7/8" O'all Lg.) 5 mm Hex L-Key (3 5/16" O'all Lg.) 6 mm Hex L-Key (3 3/4" O'all Lg.) 8 mm Hex L-Key (4 3/16" O'all Lg.) 10 mm Hex L-Key (4 11/16" O'all Lg.)	Short	Nickel Plated	Plastic Caddy	DIN 911, ISO 2936	53475A45	000000