G10550 Steel | McMaster-Carr

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Steel Grade

1055 Carbon Steel

System of Measurement

Diameter

Length

End Type

Material

Mechanical Finish

For Motion

Heat Treatment

Edge Type

Hardness Rating

Shaft Type

Round with Support Rail

Hardness

Performance

Highly Wear Resistant

Surface Smoothness

Tolerance Rating

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

RoHS

Compliant

Not Compliant

Export Control Classification Number (ECCN)

1C999

REACH

Compliant

Not Compliant

DFARS Specialty Metals

Width

Center Height

Mounting Hole Center-to-Center Width

Construction

139 Products

Shaft Type

Round

Pair with linear bearings to create smooth, precise motion

107 products

Round with Support Rail

A support rail prevents bending or bearing misalignment

32 products

Shaft Type

Hollow

Substantially lighter than standard shafts and best for light loads

21 products

Linear Shafts

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.

	Lg., mm	Dia. Tolerance, mm	Hardness	Hardness Rating	Surface Smoothness, μin		Each
Steel







				4 mm Diameter

				200	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K34	00000


				400	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K12	00000




						5 mm Diameter

						200	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K37	00000


						400	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K38	00000
						600	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K13	00000
						800	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K39	00000
						1,200	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K132	00000




								6 mm Diameter

								200	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K41	0000


								400	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K42	00000
								600	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K14	00000
								1,200	-0.008 to 0	Rockwell C59	Extra Hard	12	6112K134	00000




										8 mm Diameter

										200	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K44	0000


										400	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K45	00000
										600	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K46	00000
										800	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K15	00000
										1,200	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K136	00000




												10 mm Diameter

												200	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K101	0000


												400	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K102	00000
												500	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K47	00000
												1,000	-0.009 to 0	Rockwell C59	Extra Hard	12	6112K16	00000




												12 mm Diameter

		200										-0.011 to 0	Rockwell C59	Extra Hard	12	6112K103	0000


		400	-0.011 to 0									Rockwell C59	Extra Hard	12	6112K104	00000
		500	-0.011 to 0									Rockwell C59	Extra Hard	12	6112K52	00000
		1,000	-0.011 to 0									Rockwell C59	Extra Hard	12	6112K53	00000
		1,200	-0.011 to 0									Rockwell C59	Extra Hard	12	6112K17	00000
		1,500	-0.011 to 0									Rockwell C59	Extra Hard	12	6112K54	00000
		2,000	-0.011 to 0									Rockwell C59	Extra Hard	12	6112K55	00000




				15 mm Diameter

				200	-0.011 to 0							Rockwell C59	Extra Hard	12	6112K2	0000


				400	-0.011 to 0							Rockwell C59	Extra Hard	12	6112K4	00000
				500	-0.011 to 0							Rockwell C59	Extra Hard	12	6112K6	00000
				1,000	-0.011 to 0							Rockwell C59	Extra Hard	12	6112K94	00000
				1,200	-0.011 to 0							Rockwell C59	Extra Hard	12	6112K95	00000
				1,500	-0.011 to 0							Rockwell C59	Extra Hard	12	6112K96	00000
				2,000	-0.011 to 0							Rockwell C59	Extra Hard	12	6112K97	00000




						16 mm Diameter

						200	-0.011 to 0					Rockwell C59	Extra Hard	12	6112K107	0000


						400	-0.011 to 0					Rockwell C59	Extra Hard	12	6112K108	00000
						500	-0.011 to 0					Rockwell C59	Extra Hard	12	6112K61	00000
						1,000	-0.011 to 0					Rockwell C59	Extra Hard	12	6112K62	00000
						1,200	-0.011 to 0					Rockwell C59	Extra Hard	12	6112K63	00000
						1,500	-0.011 to 0	Rockwell C59				Extra Hard	12	6112K64	00000
						2,000	-0.011 to 0	Rockwell C59	Extra Hard			12	6112K19	000000




								20 mm Diameter

								200	-0.013 to 0			Rockwell C59	Extra Hard	12	6112K109	00000


								400	-0.013 to 0			Rockwell C59	Extra Hard	12	6112K111	00000
								500	-0.013 to 0			Rockwell C59	Extra Hard	12	6112K65	00000
								1,000	-0.013 to 0			Rockwell C59	Extra Hard	12	6112K66	00000
								1,200	-0.013 to 0	Rockwell C59		Extra Hard	12	6112K67	00000
								1,500	-0.013 to 0	Rockwell C59	Extra Hard	12	6112K68	00000
								2,000	-0.013 to 0	Rockwell C59	Extra Hard	12	6112K21	000000




										24 mm Diameter

200										-0.013 to 0	Rockwell C59	Extra Hard	12	6112K51	00000


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




										25 mm Diameter

										200	-0.013 to 0	Rockwell C59	Extra Hard	12	6112K112	00000


		500								-0.013 to 0	Rockwell C59	Extra Hard	12	6112K69	00000
		1,000	-0.013 to 0							Rockwell C59	Extra Hard	12	6112K71	00000
		1,200	-0.013 to 0							Rockwell C59	Extra Hard	12	6112K72	00000
		1,500	-0.013 to 0							Rockwell C59	Extra Hard	12	6112K73	000000
		2,000	-0.013 to 0							Rockwell C59	Extra Hard	12	6112K22	000000
		2,500	-0.013 to 0							Rockwell C59	Extra Hard	12	6112K32	000000




										30 mm Diameter

										200	-0.013 to 0	Rockwell C59	Extra Hard	12	6112K114	00000


				500						-0.013 to 0	Rockwell C59	Extra Hard	12	6112K74	00000
				1,000	-0.013 to 0					Rockwell C59	Extra Hard	12	6112K75	000000
				1,200	-0.013 to 0					Rockwell C59	Extra Hard	12	6112K76	000000
				1,500	-0.013 to 0					Rockwell C59	Extra Hard	12	6112K77	000000
				2,000	-0.013 to 0					Rockwell C59	Extra Hard	12	6112K23	000000
				2,500	-0.013 to 0					Rockwell C59	Extra Hard	12	6112K33	000000




										35 mm Diameter

										200	-0.016 to 0	Rockwell C59	Extra Hard	12	6112K116	00000


						500				-0.016 to 0	Rockwell C59	Extra Hard	12	6112K78	00000
						1,000	-0.016 to 0			Rockwell C59	Extra Hard	12	6112K79	000000
						1,200	-0.016 to 0			Rockwell C59	Extra Hard	12	6112K81	000000
						1,500	-0.016 to 0			Rockwell C59	Extra Hard	12	6112K82	000000
						2,000	-0.016 to 0			Rockwell C59	Extra Hard	12	6112K24	000000




										40 mm Diameter

										200	-0.016 to 0	Rockwell C59	Extra Hard	12	6112K118	00000


										500	-0.016 to 0	Rockwell C59	Extra Hard	12	6112K83	00000
								1,000		-0.016 to 0	Rockwell C59	Extra Hard	12	6112K84	000000
								1,200	-0.016 to 0	Rockwell C59	Extra Hard	12	6112K85	000000
								1,500	-0.016 to 0	Rockwell C59	Extra Hard	12	6112K86	000000
								2,000	-0.016 to 0	Rockwell C59	Extra Hard	12	6112K25	000000
								2,500	-0.016 to 0	Rockwell C59	Extra Hard	12	6112K36	000000




										50 mm Diameter

										200	-0.016 to 0	Rockwell C59	Extra Hard	12	6112K121	00000


500	-0.016 to 0									Rockwell C59	Extra Hard	12	6112K87	000000
1,000	-0.016 to 0									Rockwell C59	Extra Hard	12	6112K88	000000
1,200	-0.016 to 0									Rockwell C59	Extra Hard	12	6112K89	000000
1,500	-0.016 to 0									Rockwell C59	Extra Hard	12	6112K91	000000
2,000	-0.016 to 0									Rockwell C59	Extra Hard	12	6112K26	000000
2,500	-0.016 to 0									Rockwell C59	Extra Hard	12	6112K5	000000

Support-Rail Shafts

Attached support rails prevent bending or bearing misalignment under moderate to heavy loads. Pair with linear bearings 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.

	Shafts											Replacement Shafts
	Lg.	Dia. Tolerance	Ctr. Ht.	Overall Wd.	Mounting Hole Dia.	Hardness	Hardness Rating	Surface Smoothness, μin	Support Rail Material		Each		Each
Steel







				1/2" Diameter

				24"	-0.001" to -0.0005"	1 1/8"	1 1/2"	5/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K83	0000000	6499K53	0000000


				48"	-0.001" to -0.0005"	1 1/8"	1 1/2"	5/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K53	000000	6499K73	000000




						5/8" Diameter

						24"	-0.001" to -0.0005"	1 1/8"	1 5/8"	3/16"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K89	000000	6499K59	000000


						48"	-0.001" to -0.0005"	1 1/8"	1 5/8"	3/16"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K59	000000	6499K79	000000




								3/4" Diameter

								24"	-0.001" to -0.0005"	1 1/2"	1 3/4"	7/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K84	000000	6499K54	000000


								48"	-0.001" to -0.0005"	1 1/2"	1 3/4"	7/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K54	000000	6499K74	000000




										1" Diameter

										24"	-0.001" to -0.0005"	1 3/4"	2 1/8"	9/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K85	000000	6499K55	000000


										48"	-0.001" to -0.0005"	1 3/4"	2 1/8"	9/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K55	000000	6499K75	000000




												1 1/4" Diameter

												24"	-0.001" to -0.0005"	2 1/8"	2 1/2"	11/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K86	000000	6499K56	000000


												48"	-0.001" to -0.0005"	2 1/8"	2 1/2"	11/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K56	000000	6499K76	000000




														1 1/2" Diameter

														24"	-0.0011" to -0.0006"	2 1/2"	3"	11/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K87	000000	6499K57	000000


														48"	-0.0011" to -0.0006"	2 1/2"	3"	11/32"	Rockwell C60	Extra Hard	8	6061 Aluminum	59585K57	000000	6499K77	000000




														12 mm Diameter

		600 mm												-0.011 mm to 0 mm	28 mm	43 mm	4.5 mm	Rockwell C60	Extra Hard	12	6063 Aluminum	59585K71	000000	———	0


		1,200 mm	-0.011 mm to 0 mm											28 mm	43 mm	4.5 mm	Rockwell C60	Extra Hard	12	6063 Aluminum	59585K91	000000	———	0




														16 mm Diameter

				600 mm										-0.011 mm to 0 mm	30 mm	48 mm	5.5 mm	Rockwell C60	Extra Hard	12	6063 Aluminum	59585K11	000000	———	0


				1,200 mm	-0.011 mm to 0 mm									30 mm	48 mm	5.5 mm	Rockwell C60	Extra Hard	12	6063 Aluminum	59585K12	000000	———	0




														20 mm Diameter

						600 mm								-0.013 mm to 0 mm	38 mm	56 mm	6.6 mm	Rockwell C60	Extra Hard	12	6063 Aluminum	59585K13	000000	———	0


						1,200 mm	-0.013 mm to 0 mm							38 mm	56 mm	6.6 mm	Rockwell C60	Extra Hard	12	6063 Aluminum	59585K14	000000	———	0




														25 mm Diameter

								1,200 mm						-0.013 mm to 0 mm	42 mm	60 mm	6.6 mm	Rockwell C60	Extra Hard	12	6063 Aluminum	59585K94	000000	———	0




														30 mm Diameter

														1,200 mm	-0.013 mm to 0 mm	53 mm	74 mm	9 mm	Rockwell C60	Extra Hard	12	6063 Aluminum	59585K16	000000	———	0

Hollow Linear Shafts

Substantially lighter in weight than standard shafts, these are best for light loads. You can also run wiring, pneumatic tubing, coolants, and lubricants through the shaft's hollow center. 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.

	Lg., mm	Dia. Tolerance, mm	ID, mm	Hardness	Hardness Rating	Surface Smoothness, μin		Each
Steel







				12 mm Diameter

				300	-0.018 to 0	4	Rockwell C59	Extra Hard	12	5964K11	000000


				500	-0.018 to 0	4	Rockwell C59	Extra Hard	12	5964K12	00000
				1,000	-0.018 to 0	4	Rockwell C59	Extra Hard	12	5964K13	000000




						16 mm Diameter

						300	-0.018 to 0	7	Rockwell C59	Extra Hard	12	5964K31	00000


						500	-0.018 to 0	7	Rockwell C59	Extra Hard	12	5964K32	00000
						1,000	-0.018 to 0	7	Rockwell C59	Extra Hard	12	5964K33	000000




								20 mm Diameter

								300	-0.021 to 0	14	Rockwell C59	Extra Hard	12	5964K21	00000


								500	-0.021 to 0	14	Rockwell C59	Extra Hard	12	5964K41	000000
								1,000	-0.021 to 0	14	Rockwell C59	Extra Hard	12	5964K51	000000
								1,500	-0.021 to 0	14	Rockwell C59	Extra Hard	12	5964K71	000000




										25 mm Diameter

										300	-0.021 to 0	15.5	Rockwell C59	Extra Hard	12	5964K22	00000


										500	-0.021 to 0	15.5	Rockwell C59	Extra Hard	12	5964K42	000000
										1,000	-0.021 to 0	15.5	Rockwell C59	Extra Hard	12	5964K52	000000
										1,500	-0.021 to 0	15.5	Rockwell C59	Extra Hard	12	5964K72	000000




												30 mm Diameter

												300	-0.021 to 0	18.2	Rockwell C59	Extra Hard	12	5964K23	00000


												500	-0.021 to 0	18.2	Rockwell C59	Extra Hard	12	5964K43	000000
												1,000	-0.021 to 0	18.2	Rockwell C59	Extra Hard	12	5964K53	000000
												1,500	-0.021 to 0	18.2	Rockwell C59	Extra Hard	12	5964K73	000000




	40 mm Diameter

	500												-0.025 to 0	26	Rockwell C59	Extra Hard	12	5964K44	000000


	1,000	-0.025 to 0											26	Rockwell C59	Extra Hard	12	5964K54	000000
	1,500	-0.025 to 0	26										Rockwell C59	Extra Hard	12	5964K74	000000