24mm Shafts | McMaster-Carr

Pair with linear bearings and shaft supports to create smooth, precise motion. These linear shafts are turned, ground, and polished to tight tolerances and hardened to resist wear.

Steel—Stronger than aluminum and stainless steel. These shafts are best for dry environments since moisture will cause them to rust.

Surface Smoothness—The lower the microinch value, the smoother the finish and the less friction it will cause on the bearing.

	Hardness Rating	Surface Smoothness, μin		Each
Steel







	24 mm Diameter

	200	-0.013 to 0	Rockwell C59	Extra Hard	12	6112K51	000000


	500	-0.013 to 0	Rockwell C59	Extra Hard	12	6112K58	00000
	1,000	-0.013 to 0	Rockwell C59	Extra Hard	12	6112K59	000000
	1,200	-0.013 to 0	Rockwell C59	Extra Hard	12	6112K92	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
	Lg., mm	Lg.	Wd.	Dp.	ANSI Keys Included	Straightness Tolerance	Dia. Tolerance, mm	Hardness	Hardness Rating		Each
Carbon Steel







				24 mm Diameter

				300	300 mm	8 mm	4 mm	No	0.33 mm/300 mm	-0.0635 to 0	Rockwell B95	Medium	1439K711	000000


				500	500 mm	8 mm	4 mm	No	0.33 mm/300 mm	-0.0635 to 0	Rockwell B95	Medium	1439K721	00000
				1,000	1,000 mm	8 mm	4 mm	No	0.33 mm/300 mm	-0.0635 to 0	Rockwell B95	Medium	1439K731	000000
				1,200	1,200 mm	8 mm	4 mm	No	0.33 mm/300 mm	-0.0635 to 0	Rockwell B95	Medium	1439K741	000000
				1,800	1,800 mm	8 mm	4 mm	No	0.33 mm/300 mm	-0.0635 to 0	Rockwell B95	Medium	1439K16	000000

Tight-Tolerance Oil-Hardening O1 Tool Steel Rods

Ready for turning in a lathe, these rods are precision ground to a tight diameter tolerance. They’re also known as drill rod. Often used for dies, punches, and gauges, O1 tool steel is an oil-hardening material that resists wear and abrasion. It can also be surface hardened with heat treating for added wear resistance.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Dia., mm	Dia. Tolerance, mm	Fabrication	Heat Treatment	Yield Strength, psi	Mechanical Finish	Hardness	Max. Hardness After Heat Treatment	Specs. Met		1 ft. Long	3 ft. Long	6 ft. Long
24	-0.0250 to 0.0250	Hot Rolled	Annealed	50,000	Precision Ground	Rockwell B90 (Medium)	Rockwell C65	ASTM A681	8893K293	000000	000000	0000000

Multipurpose 304 Stainless Steel Rods

Made from the most common stainless steel, these 304 stainless steel rods are used to create corrosion-resistant parts for a wide range of applications. Machine them into anything from shafts on chemical mixers to flanges on beverage lines. They maintain their corrosion resistance in temperatures up to 1500° F.

Long Rods

Image of Product. Front orientation. Stainless Steel. Multipurpose 304 Stainless Steel Rods.

Good for turning, threading, and machining parts along their length. They’re often used to make shafts and pins.

Dia. Tolerance, mm	Material	Fabrication	Hardness	Specs. Met		1 ft. Long	1 1/2 ft. Long	3 ft. Long	6 ft. Long



24	-0.052 to 0	304 Stainless Steel	Cold Worked	Rockwell B80 (Medium)	ASTM A276, EN 10088-3	1272T171	000000	0000000	0000000	0000000