1/4" Axles | McMaster-Carr

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90 Products

Wheel Axles

Axle

Replace worn or broken caster axles.

Thread Lg.	Includes		Each







Zinc-Plated Steel

1/4"	1 1/2"	1/4"-20	7/8"	Hex Nut	23595T11	00000


1/4"	1 3/4"	1/4"-20	7/8"	Hex Nut	23595T12	0000

Rotary Shafts

Pair with gears, sprockets, and bearings to transmit rotary motion. Turned, ground, and polished to tight tolerances, these shafts reduce vibration, evenly distribute loads, and improve accuracy.

Carbon Steel—Strong and easy to machine. These shafts work best in dry environments since moisture will cause steel to rust.

Black-Oxide Carbon Steel—Typically chosen for their appearance, these shafts have a dark, matte coating for a finished look. They offer minimal corrosion resistance, so they're best for dry environments.

Chrome-Plated Carbon Steel—The chrome plating creates a hard, protective barrier that withstands moisture. However, it can chip or flake under repeated impact or shock loads.

High-Strength Alloy Steel—Our strongest steel shafts. However, they're more difficult to machine than carbon steel shafts.

Corrosion-Resistant 303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These shafts are easier to machine than other stainless steel shafts.

Highly Corrosion-Resistant 316 Stainless Steel—More corrosion resistant than 303 and 304 stainless steel shafts. They stand up to salt water and harsh chemicals, such as bleach, chlorine, and phosphoric acid.

				Material		Finish
	Lg.	Straightness Tolerance	Diameter Tolerance	Hardness	Hardness Rating	Hardness	Hardness Rating		Each
Carbon Steel







				1/4" Diameter

				3"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K113	00000


				4"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K114	0000
				5"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K115	0000
				6"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K65	0000
				9"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K118	0000
				12"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K66	0000
				18"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K67	00000
				24"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K68	00000
				36"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K71	00000
				48"	0.0048"/1 ft.	-0.0002" to 0"	Brinell 167	Medium	—	—	1327K211	00000


				Black-Oxide Carbon Steel







								1/4" Diameter

								12"	0.003"/1 ft.	-0.001" to 0"	Rockwell C20	Hard	Rockwell C19	Medium	1886K1	0000


								18"	0.003"/1 ft.	-0.001" to 0"	Rockwell C20	Hard	Rockwell C19	Medium	1886K2	0000
								24"	0.003"/1 ft.	-0.001" to 0"	Rockwell C20	Hard	Rockwell C19	Medium	1886K3	0000
								36"	0.003"/1 ft.	-0.001" to 0"	Rockwell C20	Hard	Rockwell C19	Medium	1886K4	00000
								48"	0.003"/1 ft.	-0.001" to 0"	Rockwell C20	Hard	Rockwell C19	Medium	1886K5	00000
								60"	0.003"/1 ft.	-0.001" to 0"	Rockwell C20	Hard	Rockwell C19	Medium	1886K6	00000


								Chrome-Plated Carbon Steel







												1/4" Diameter

												12"	0.003"/1 ft.	-0.001" to 0"	Brinell 190	Medium	Rockwell C68	Ultra Hard	5947K11	0000


												18"	0.003"/1 ft.	-0.001" to 0"	Brinell 190	Medium	Rockwell C68	Ultra Hard	5947K23	00000
												24"	0.003"/1 ft.	-0.001" to 0"	Brinell 190	Medium	Rockwell C68	Ultra Hard	5947K35	00000
												36"	0.003"/1 ft.	-0.001" to 0"	Brinell 190	Medium	Rockwell C68	Ultra Hard	5947K47	00000
												48"	0.003"/1 ft.	-0.001" to 0"	Brinell 190	Medium	Rockwell C68	Ultra Hard	5947K59	00000


												High-Strength Alloy Steel







			1/4" Diameter

			6"										0.0125"/1 ft.	-0.001" to 0"	Rockwell C28	Hard	—	—	2672N11	00000


			12"										0.0125"/1 ft.	-0.001" to 0"	Rockwell C28	Hard	—	—	2672N12	00000
			36"										0.0125"/1 ft.	-0.001" to 0"	Rockwell C28	Hard	—	—	2672N13	00000
			72"										0.0125"/1 ft.	-0.001" to 0"	Rockwell C28	Hard	—	—	2672N14	000000


			Corrosion-Resistant 303 Stainless Steel







																1/4" Diameter

				3"												0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83	Medium	—	—	1257K113	0000


				4"	0.0048"/1 ft.											-0.0002" to 0"	Rockwell B83	Medium	—	—	1257K114	0000
				5"	0.0048"/1 ft.											-0.0002" to 0"	Rockwell B83	Medium	—	—	1257K115	0000
				6"	0.0048"/1 ft.	-0.0002" to 0"										Rockwell B83	Medium	—	—	1257K65	0000
				9"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83									Medium	—	—	1257K118	00000
				12"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83									Medium	—	—	1257K66	00000
				18"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83									Medium	—	—	1257K67	00000
				24"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83									Medium	—	—	1257K68	00000
				36"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83									Medium	—	—	1257K71	00000
				48"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83									Medium	—	—	1257K131	00000
				60"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83									Medium	—	—	1257K132	00000


				72"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83									Medium	—	—	1257K133	00000


				Highly Corrosion-Resistant 316 Stainless Steel







								1/4" Diameter

								3"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83					Medium	—	—	1263K173	0000


								4"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83					Medium	—	—	1263K174	00000
								5"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83					Medium	—	—	1263K175	00000
								6"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83					Medium	—	—	1263K65	00000
								9"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83					Medium	—	—	1263K178	00000
								12"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83					Medium	—	—	1263K66	00000
								18"	0.003"/1 ft.	-0.001" to 0"	Rockwell C21					Hard	—	—	6493K17	00000
								18"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83					Medium	—	—	1263K67	00000
24"								0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83	Medium					—	—	1263K68	00000
36"								0.003"/1 ft.	-0.001" to 0"	Rockwell C21	Hard					—	—	6493K18	00000
36"								0.0048"/1 ft.	-0.0002" to 0"	Rockwell B83	Medium	—				—	1263K71	00000


60"	0.003"/1 ft.	-0.001" to 0"						Rockwell C21	Hard	—	—	6493K19				000000

Threaded Rotary Shafts

Screw these shafts directly into tapped holes, or secure fan blades and other accessories with a nut. Turned, ground, and polished to tight tolerances, these shafts reduce vibration, evenly distribute loads, and improve accuracy.

Carbon Steel—Strong and easy to machine. These shafts work best in dry environments since moisture will cause steel to rust.

		Thread					Material
	Lg.	Size	Lg.	Step Lg.	Straightness Tolerance	Diameter Tolerance	Hardness	Hardness Rating		Each
Carbon Steel







				1/4" Diameter

				6"	10-32	3/8"	7/16"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B75	Medium	4166N16	000000


				6"	1/4"-20	1/2"	—	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B75	Medium	4166N15	00000
				12"	10-32	3/8"	7/16"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B75	Medium	4166N12	00000
				12"	1/4"-20	1/2"	—	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B75	Medium	4166N11	00000
				24"	10-32	3/8"	7/16"	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B75	Medium	4166N14	00000
				24"	1/4"-20	1/2"	—	0.0048"/1 ft.	-0.0002" to 0"	Rockwell B75	Medium	4166N13	00000

Retaining-Ring-Grooved Rotary Shafts

Clip retaining rings into the grooves to position gears, sprockets, and bearings without bulky collars or clamps. Turned, ground, and polished to tight tolerances, these shafts reduce vibration, evenly distribute loads, and improve accuracy.

Corrosion-Resistant 303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These shafts are easier to machine than other stainless steel shafts.

		Groove				No. of Grooves				Material
	Lg.	Wd.	Dia.	End-to-Groove Lg.	Groove-to-Groove Lg.	First End	Second End	Straightness Tolerance	Diameter Tolerance	Hardness	Hardness Rating		Each
Corrosion-Resistant 303 Stainless Steel







				1/4" Diameter

				3"	0.029"	0.21"	0.063"	0.25"	5	2	0.0096"/1 ft.	-0.0002" to 0"	Rockwell B83	Medium	2025K1	00000


				6"	0.029"	0.21"	0.063"	0.25"	5	2	0.0096"/1 ft.	-0.0002" to 0"	Rockwell B83	Medium	2025K2	0000
				12"	0.029"	0.21"	0.063"	0.25"	5	2	0.0096"/1 ft.	-0.0002" to 0"	Rockwell B83	Medium	2025K4	00000

D-Profile Rotary Shafts

Lock gears, sprockets, and bearings in place so they won't slip as these shafts turn. The flat length mates with D-shaped bores for a secure connection while giving set screws an even surface to dig into. Turned, ground, and polished to tight tolerances, these shafts reduce vibration, evenly distribute loads, and improve accuracy.

Carbon Steel—Strong and easy to machine. These shafts work best in dry environments since moisture will cause steel to rust.

Corrosion-Resistant 303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These shafts are easier to machine than other stainless steel shafts.

					Material
	Lg.	Flat Wd.	Straightness Tolerance	Diameter Tolerance	Hardness	Hardness Rating		Each
Carbon Steel







				1/4" Diameter

				6"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8632T132	00000


				12"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8632T139	00000
				24"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8632T141	00000
				36"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8632T142	00000
				48"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8632T143	00000


				Corrosion-Resistant 303 Stainless Steel







								1/4" Diameter

								6"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B83	Medium	8632T144	00000


								12"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B83	Medium	8632T151	00000
								24"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B83	Medium	8632T154	00000
								36"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B83	Medium	8632T157	00000
								48"	1/8"	0.012"/1 ft.	-0.003" to 0"	Rockwell B83	Medium	8632T161	00000

Thread-Mount Idler Rotary Shafts


Retaining-Ring-Grooves End	Retaining-Ring-Grooves End

Thread these shafts into a tapped hole to support idler sprockets and pulleys in tensioning applications.

Retaining-Ring-Grooves End—Shafts with retaining ring grooves come with a retaining ring and spacers to position your component and hold it in place.

			Overall		Thread		Groove
	Dia.	Lg.	Lg.	Dia.	Size	Lg.	Wd.	Dia.	End-to-Groove Lg.	Edge Type	Hardness Rating	Hardness		Each
Retaining-Ring-Grooves End—Zinc-Plated 1215 Carbon Steel



		1/4"	3/8"	1 1/16"	1/2"	1/4"-20	21/64"	0.029"	0.21"	0.063"	Chamfered	Not Rated	Not Rated	2435K1	00000

Flange-Mount Idler Rotary Shafts

Mount the flange to a machine or wall to support idler sprockets and pulleys in tensioning applications. They include washers and a nut to position your component and hold it in place.

			Overall		Thread				Mounting Holes
	Dia.	Lg.	Lg.	Dia.	Size	Lg.	Flange Thk.	Bolt Circle Dia.	No. of	Dia.	Edge Type	Hardness Rating	Hardness		Each
Threaded End—Zinc-Plated 1215 Carbon Steel



		1/4"	3/8"	1"	1 1/16"	10-24	11/32"	9/32"	23/32"	4	5/32"	Straight	Not Rated	Not Rated	2435K11	000000

Keyed Rotary Shafts

Match with a machine key to prevent slipping while transmitting torque to gears and other components. Turned, ground, and polished to tight tolerances, these shafts reduce vibration, evenly distribute loads, and improve accuracy.

Fully Keyed

Mount components anywhere along the length of these shafts. For secure torque transmission, slide a component from either end and lock it into place with an ANSI machine key (sold separately).

Carbon Steel—Strong and easy to machine. These shafts work best in dry environments since moisture will cause steel to rust.

		Keyway						Material		Certificate
	Lg.	Lg.	Wd.	Dp.	ANSI Keys Included	Straightness Tolerance	Dia. Tolerance	Hardness	Hardness Rating	Type	Form		Each
Carbon Steel







				1/4" Diameter

				3"	3"	3/32"	3/64"	No	0.003"/1 ft.	-0.001" to 0"	Rockwell C14	Medium	Material Certificate	Paper	8488T1	000000


				6"	6"	3/32"	3/64"	No	0.003"/1 ft.	-0.001" to 0"	Rockwell C14	Medium	Material Certificate	Paper	8488T2	00000
				9"	9"	3/32"	3/64"	No	0.003"/1 ft.	-0.001" to 0"	Rockwell C14	Medium	Material Certificate	Paper	8488T3	00000
				12"	12"	3/32"	3/64"	No	0.003"/1 ft.	-0.001" to 0"	Rockwell C14	Medium	Material Certificate	Paper	8488T4	00000
				24"	24"	3/32"	3/64"	No	0.003"/1 ft.	-0.001" to 0"	Rockwell C14	Medium	Material Certificate	Paper	8488T5	00000
				36"	36"	3/32"	3/64"	No	0.003"/1 ft.	-0.001" to 0"	Rockwell C14	Medium	Material Certificate	Paper	8488T6	000000
				48"	48"	3/32"	3/64"	No	0.003"/1 ft.	-0.001" to 0"	Rockwell C14	Medium	Material Certificate	Paper	8488T7	000000

Sleeve Splines and Bearings

Often used in wet and dirty environments, these sleeve splines and bearings create a compact linear and rotary motion system. The grooves on the splines transmit rotary power as the sleeve bearing moves freely along their length. Sleeve bearings don't have moving parts that can be damaged from dirt and debris. And they don't need to be lubricated, making them overall lower maintenance than ball bearings.

Splines

Splines are PTFE coated to reduce friction, so bearings slide smoothly and last longer. They’re stainless steel, so they won’t rust.

	Spline
	Lg.	No. of	Lg.	Lg. Tolerance	Root Dia.	Material	Edge Type	Hardness Rating	Hardness		Each
1/4" Diameter (Tolerance: -0.002" to 0.002")



		12"	14	12"	0" to 0.25"	0.202"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N11	000000


		24"	14	24"	0" to 0.25"	0.202"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N12	000000
		36"	14	36"	0" to 0.25"	0.202"	PTFE-Coated 304 Stainless Steel	Straight	Medium	Rockwell B70	4134N13	000000

Tapped D-Profile Rotary Shafts

Directly attach accessories and securely mount power-transmission components. These shafts have threaded ends to connect fan blades, mixer propellers, and other accessories with a fastener. The flat length mates with D-shaped bores and gives set screws an even surface to dig into, so gears, bearings, and sprockets won’t slip as the shaft rotates. Turned, ground, and polished, these shafts reduce vibration, evenly distribute loads, and improve accuracy.

Carbon Steel—Strong and easy to machine. These shafts work best in dry environments since moisture will cause steel to rust.

			Thread				Material
	Lg.	Flat Wd.	Size	Lg.	Straightness Tolerance	Diameter Tolerance	Hardness	Hardness Rating		Each
Carbon Steel







				1/4" Diameter

				6"	1/8"	5-40	0.375"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8017T1	000000


				12"	1/8"	5-40	0.375"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8017T7	00000
				24"	1/8"	5-40	0.375"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8017T14	00000
				48"	1/8"	5-40	0.375"	0.012"/1 ft.	-0.003" to 0"	Rockwell B90	Medium	8017T27	00000

Undersized Rotary Shafts

Slide precision ball bearings (ABEC-3 and above) onto these shafts. The diameter is slightly smaller than listed, so you don't need to use a bearing heater or mechanical press, which can cause damage. Turned, ground, and polished to tight tolerances, these shafts reduce vibration, evenly distribute loads, and improve accuracy.

Corrosion-Resistant 303 Stainless Steel—Withstand moisture and mild cleaning solutions, such as acetone and ammonia. These shafts are easier to machine than other stainless steel shafts.

				Material
	Lg.	Straightness Tolerance	Diameter Tolerance	Hardness	Hardness Rating		Each
Corrosion-Resistant 303 Stainless Steel







				1/4" Diameter

				6"	0.0048"/1 ft.	-0.0005" to -0.0003"	Rockwell B83	Medium	4149N11	00000


				12"	0.0048"/1 ft.	-0.0005" to -0.0003"	Rockwell B83	Medium	4149N12	00000
				24"	0.0048"/1 ft.	-0.0005" to -0.0003"	Rockwell B83	Medium	4149N13	00000
				36"	0.0048"/1 ft.	-0.0005" to -0.0003"	Rockwell B83	Medium	4149N14	00000