Mountable Shaft Collars | McMaster-Carr

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System of Measurement

Shaft Diameter

Material

Construction

Shaft Type

Width

Mounting Hole Thread Size

Number of Mounting Holes

Keyway Width

Thread Size

Clamping Screw Material

Flange OD

Number of Clamping Screws Included

Performance

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

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

Yes

REACH

Compliant

RoHS

Compliant

Mounting Hole Location

Keyway Depth

Steel Grade

1018 Low-Carbon Steel

1026 Low-Carbon Steel

1117 Carbon Steel

1215 Carbon Steel

Mounting Hole Diameter

Flat-to-Flat Height

Flange Thickness

276 Products

Performance

Corrosion Resistant

Won't rust when exposed to moisture or mild chemicals

123 products

Lightweight

Alternatives to steel collars for weight-sensitive applications

49 products

Performance

Weldable

Create a strong, permanent bond with a shaft or other components

202 products

Finish-Your-Own

Machine a bore for your shaft or cut attachment points into the face

11 products

Face-Mount Shaft Collars

Mount components into the tapped holes on the face of these collars. They slide from one end of a shaft and clamp firmly and evenly to prevent marring, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

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

				Clamping Screw			Mounting Holes
	For Shaft Dia.	OD	Wd.	Type	No. Included	Mounting Fasteners Included	Thread Size	No. of		Each
Black-Oxide Carbon Steel



		1/2"	1 1/8"	13/32"	Socket Head	1	No	8-32	2	9677T21	000000


		9/16"	1 5/16"	7/16"	Socket Head	1	No	10-24	2	9677T22	00000
		5/8"	1 5/16"	7/16"	Socket Head	1	No	10-24	2	9677T23	00000
		11/16"	1 1/2"	1/2"	Socket Head	1	No	1/4"-20	2	9677T24	00000
		3/4"	1 1/2"	1/2"	Socket Head	1	No	1/4"-20	2	9677T1	00000
		1"	1 3/4"	1/2"	Socket Head	1	No	1/4"-20	2	9677T2	00000
		1 1/8"	1 7/8"	1/2"	Socket Head	1	No	1/4"-20	2	9677T3	00000
		1 1/4"	2 1/16"	1/2"	Socket Head	1	No	1/4"-20	2	9677T4	00000
		1 3/8"	2 1/4"	9/16"	Socket Head	1	No	1/4"-20	2	9677T5	00000
		1 1/2"	2 3/8"	9/16"	Socket Head	1	No	1/4"-20	2	9677T6	00000
		1 3/4"	2 3/4"	11/16"	Socket Head	1	No	5/16"-18	2	9677T7	00000


		2"	3"	11/16"	Socket Head	1	No	5/16"-18	2	9677T8	00000
		2 1/2"	3 3/4"	7/8"	Socket Head	1	No	5/16"-18	2	9677T9	00000
		3"	4 1/4"	7/8"	Socket Head	1	No	5/16"-18	2	9677T11	00000
		12 mm	28 mm	11 mm	Socket Head	1	No	M4 × 0.7 mm	2	5633T11	00000
		16 mm	34 mm	13 mm	Socket Head	1	No	M5 × 0.8 mm	2	5633T12	00000
		18 mm	36 mm	13 mm	Socket Head	1	No	M5 × 0.8 mm	2	5633T13	00000
		20 mm	40 mm	15 mm	Socket Head	1	No	M5 × 0.8 mm	2	5633T14	00000
		25 mm	45 mm	15 mm	Socket Head	1	No	M5 × 0.8 mm	2	5633T15	00000
		30 mm	54 mm	15 mm	Socket Head	1	No	M6 × 1 mm	2	5633T16	00000
		35 mm	57 mm	15 mm	Socket Head	1	No	M6 × 1 mm	2	5633T17	00000


		40 mm	60 mm	15 mm	Socket Head	1	No	M6 × 1 mm	2	5633T18	00000
		45 mm	73 mm	19 mm	Socket Head	1	No	M8 × 1.25 mm	2	5633T19	00000
		50 mm	78 mm	19 mm	Socket Head	1	No	M8 × 1.25 mm	2	5633T21	00000


		303 Stainless Steel



				1/4"	11/16"	5/16"	Socket Head	1	No	4-40	2	5631T26	00000


				3/8"	7/8"	3/8"	Socket Head	1	No	4-40	2	5631T27	00000
				1/2"	1 1/8"	13/32"	Socket Head	1	No	8-32	2	5631T11	00000
				9/16"	1 5/16"	7/16"	Socket Head	1	No	10-24	2	5631T12	00000
				5/8"	1 5/16"	7/16"	Socket Head	1	No	10-24	2	5631T13	00000
				11/16"	1 1/2"	1/2"	Socket Head	1	No	1/4"-20	2	5631T14	00000
				3/4"	1 1/2"	1/2"	Socket Head	1	No	1/4"-20	2	5631T15	00000
				1"	1 3/4"	1/2"	Socket Head	1	No	1/4"-20	2	5631T16	00000
				1 1/8"	1 7/8"	1/2"	Socket Head	1	No	1/4"-20	2	5631T17	00000
				1 1/4"	2 1/16"	1/2"	Socket Head	1	No	1/4"-20	2	5631T18	00000
				1 3/8"	2 1/4"	9/16"	Socket Head	1	No	1/4"-20	2	5631T19	00000


				1 1/2"	2 3/8"	9/16"	Socket Head	1	No	1/4"-20	2	5631T21	00000
				1 3/4"	2 3/4"	11/16"	Socket Head	1	No	5/16"-18	2	5631T22	00000
				2"	3"	11/16"	Socket Head	1	No	5/16"-18	2	5631T23	00000
				2 1/2"	3 3/4"	7/8"	Socket Head	1	No	5/16"-18	2	5631T24	000000
				3"	4 1/4"	7/8"	Socket Head	1	No	5/16"-18	2	5631T25	000000
				12 mm	28 mm	11 mm	Socket Head	1	No	M4 × 0.7 mm	2	5705T11	00000
				16 mm	34 mm	13 mm	Socket Head	1	No	M5 × 0.8 mm	2	5705T12	00000
				18 mm	36 mm	13 mm	Socket Head	1	No	M5 × 0.8 mm	2	5705T13	00000
				20 mm	40 mm	15 mm	Socket Head	1	No	M5 × 0.8 mm	2	5705T14	00000
				25 mm	45 mm	15 mm	Socket Head	1	No	M5 × 0.8 mm	2	5705T15	00000


30 mm	54 mm			15 mm	Socket Head	1	No	M6 × 1 mm	2	5705T16	00000
40 mm	60 mm			15 mm	Socket Head	1	No	M6 × 1 mm	2	5705T18	00000
45 mm	73 mm			19 mm	Socket Head	1	No	M8 × 1.25 mm	2	5705T19	00000
50 mm	78 mm			19 mm	Socket Head	1	No	M8 × 1.25 mm	2	5705T21	000000

Flange-Mount Shaft Collars

Use the tapped and unthreaded holes on the flange to mount components as needed. To install, slide these collars from one end of your shaft and tighten the clamping screws. The collars grip firmly and evenly without marring the shaft, so you can reposition or remove them later. Collars with keyways have a standard ANSI keyway to lock in place shafts, keys, and key stock.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

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

Aluminum—One-third the weight of steel and corrosion resistant.

				Flange		Keyway			Clamping Screw			Mounting Holes		Unthreaded Mounting Holes
	For Shaft Dia.	OD	Wd.	OD	Thk.	Wd.	Dp.	For Shaft Type	Type	No. Included	Mounting Fasteners Included	Thread Size	No. of	Dia.	No. of		Each
Black-Oxide Carbon Steel



		1/4"	13/16"	5/8"	1 15/32"	1/4"	—	—	Round	Socket Head	2	No	4-40	3	1/8"	3	9684T27	000000


		3/8"	1 1/16"	11/16"	1 23/32"	1/4"	3/32"	1/16"	Keyed	Socket Head	2	No	6-32	3	5/32"	3	9684T28	00000
		1/2"	1 1/4"	3/4"	2 7/32"	9/32"	1/8"	1/16"	Keyed	Socket Head	2	No	8-32	3	5/32"	3	9684T1	00000
		5/8"	1 1/2"	13/16"	2 19/32"	5/16"	3/16"	5/64"	Keyed	Socket Head	2	No	10-24	3	3/16"	3	9684T2	00000
		3/4"	1 3/4"	1"	2 31/32"	13/32"	3/16"	3/32"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9684T3	000000
		1"	2"	1"	3 7/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9684T4	000000
		1 1/8"	2 1/8"	1"	3 7/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9684T29	000000
		1 1/4"	2 1/4"	1"	3 15/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9684T5	000000
		1 3/8"	2 3/8"	1"	3 19/32"	13/32"	5/16"	9/64"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9684T31	000000
		1 1/2"	2 1/2"	1"	3 23/32"	13/32"	3/8"	11/64"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9684T6	000000
		1 3/4"	3"	1 1/4"	4 15/32"	1/2"	3/8"	11/64"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9684T32	000000


		1 15/16"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9684T33	000000
		2"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9684T34	000000
		2 3/16"	3 1/2"	1 1/4"	4 31/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9684T35	000000
		2 1/4"	3 1/2"	1 1/4"	4 31/32"	1/2"	1/2"	15/64"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9684T36	000000
		2 7/16"	4"	1 3/8"	5 23/32"	1/2"	5/8"	9/32"	Keyed	Socket Head	2	No	3/8"-16	3	3/8"	3	9684T37	000000
		2 1/2"	4"	1 3/8"	5 23/32"	1/2"	5/8"	9/32"	Keyed	Socket Head	2	No	3/8"-16	3	3/8"	3	9684T38	000000
		3"	4 1/2"	1 3/8"	6 11/32"	1/2"	3/4"	21/64"	Keyed	Socket Head	2	No	3/8"-16	3	3/8"	3	9684T39	000000
		6 mm	16 mm	19 mm	38 mm	6.9 mm	—	—	Round	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9604T11	00000
		8 mm	18 mm	19 mm	41 mm	6.9 mm	2 mm	1 mm	Keyed	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9604T12	00000
		10 mm	24 mm	19 mm	45 mm	6.9 mm	3 mm	1.4 mm	Keyed	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9604T13	00000


		12 mm	28 mm	19 mm	55 mm	6.9 mm	4 mm	1.8 mm	Keyed	Socket Head	2	No	M4 × 0.7 mm	3	4 mm	3	9604T14	00000
		16 mm	34 mm	20.6 mm	63 mm	6.9 mm	5 mm	2.3 mm	Keyed	Socket Head	2	No	M5 × 0.8 mm	3	5.4 mm	3	9604T15	00000
		18 mm	36 mm	20.64 mm	63 mm	6.85 mm	6 mm	2.8 mm	Keyed	Socket Head	2	No	M5 × 0.8 mm	3	5.4 mm	3	9604T16	000000
		20 mm	40 mm	25.4 mm	69 mm	7.9 mm	6 mm	2.8 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9604T17	00000
		25 mm	45 mm	25.4 mm	75 mm	7.9 mm	8 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9604T18	00000
		30 mm	54 mm	25.4 mm	82 mm	7.9 mm	8 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9604T19	000000
		35 mm	57 mm	25.4 mm	88 mm	7.9 mm	10 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9604T21	000000
		40 mm	60 mm	25.4 mm	92 mm	7.9 mm	12 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9604T22	000000
		45 mm	73 mm	32 mm	107 mm	13 mm	14 mm	3.8 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	8.4 mm	3	9604T23	000000
		50 mm	78 mm	31.75 mm	114 mm	12.7 mm	14 mm	3.8 mm	Keyed	Socket Head	2	No	M8 × 1.25 mm	3	8.4 mm	3	9604T24	000000


		303 Stainless Steel



				1/4"	13/16"	5/8"	1 15/32"	1/4"	—	—	Round	Socket Head	2	No	4-40	3	1/8"	3	9692T28	00000


				3/8"	1 1/16"	11/16"	1 23/32"	1/4"	3/32"	1/16"	Keyed	Socket Head	2	No	6-32	3	5/32"	3	9692T31	00000
				1/2"	1 1/4"	3/4"	2 7/32"	9/32"	1/8"	1/16"	Keyed	Socket Head	2	No	8-32	3	5/32"	3	9692T32	000000
				5/8"	1 1/2"	13/16"	2 19/32"	5/16"	3/16"	5/64"	Keyed	Socket Head	2	No	10-24	3	3/16"	3	9692T33	000000
				3/4"	1 3/4"	1"	2 31/32"	13/32"	3/16"	3/32"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9692T34	000000
				1"	2"	1"	3 7/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9692T35	000000
				1 1/8"	2 1/8"	1"	3 7/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9692T36	000000
				1 1/4"	2 1/4"	1"	3 15/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9692T37	000000
				1 3/8"	2 3/8"	1"	3 19/32"	13/32"	5/16"	9/64"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9692T38	000000
				1 1/2"	2 1/2"	1"	3 23/32"	13/32"	3/8"	11/64"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9692T39	000000
				1 3/4"	3"	1 1/4"	4 15/32"	1/2"	3/8"	11/64"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9692T41	000000


				1 15/16"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9692T42	000000
				2"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9692T43	000000
				2 1/4"	3 1/2"	1 1/4"	4 31/32"	1/2"	1/2"	15/64"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9692T45	000000
3"				4 1/2"	1 3/8"	6 11/32"	1/2"	3/4"	21/64"	Keyed	Socket Head	2	No	3/8"-16	3	3/8"	3	9692T48	000000
6 mm	16 mm			19 mm	38 mm	6.9 mm	—	—	Round	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9624T15	00000
8 mm	18 mm			19 mm	41 mm	6.9 mm	2 mm	1 mm	Keyed	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9624T16	00000
10 mm	24 mm			19 mm	45 mm	6.9 mm	3 mm	1.4 mm	Keyed	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9624T17	00000
12 mm	28 mm			19 mm	55 mm	6.9 mm	4 mm	1.8 mm	Keyed	Socket Head	2	No	M4 × 0.7 mm	3	4 mm	3	9624T18	000000
16 mm	34 mm			20.6 mm	63 mm	6.9 mm	5 mm	2.3 mm	Keyed	Socket Head	2	No	M5 × 0.8 mm	3	5.4 mm	3	9624T19	000000
18 mm	36 mm			20.64 mm	63 mm	6.85 mm	6 mm	2.8 mm	Keyed	Socket Head	2	No	M5 × 0.8 mm	3	5.4 mm	3	9624T22	000000


20 mm	40 mm			25.4 mm	69 mm	7.9 mm	6 mm	2.8 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9624T23	000000
25 mm	45 mm			25.4 mm	75 mm	7.9 mm	8 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9624T24	000000
30 mm	54 mm			25.4 mm	82 mm	7.9 mm	8 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9624T25	000000
35 mm	57 mm			25.4 mm	88 mm	7.9 mm	10 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9624T26	000000
40 mm	60 mm			25.4 mm	92 mm	7.9 mm	12 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9624T27	000000
45 mm	73 mm			32 mm	107 mm	13 mm	14 mm	3.8 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	8.4 mm	3	9624T28	000000
50 mm	78 mm			31.75 mm	114 mm	12.7 mm	14 mm	3.8 mm	Keyed	Socket Head	2	No	M8 × 1.25 mm	3	8.4 mm	3	9624T29	000000


Aluminum



				1/4"	13/16"	5/8"	1 15/32"	1/4"	—	—	Round	Socket Head	2	No	4-40	3	1/8"	3	9793T11	00000


				3/8"	1 1/16"	11/16"	1 23/32"	1/4"	3/32"	1/16"	Keyed	Socket Head	2	No	6-32	3	5/32"	3	9793T12	00000
				1/2"	1 1/4"	3/4"	2 7/32"	9/32"	1/8"	1/16"	Keyed	Socket Head	2	No	8-32	3	5/32"	3	9793T13	00000
				5/8"	1 1/2"	13/16"	2 19/32"	5/16"	3/16"	5/64"	Keyed	Socket Head	2	No	10-24	3	3/16"	3	9793T14	000000
				3/4"	1 3/4"	1"	2 31/32"	13/32"	3/16"	3/32"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9793T15	000000
				1"	2"	1"	3 7/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9793T16	000000
				1 1/8"	2 1/8"	1"	3 7/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9793T17	000000
				1 1/4"	2 1/4"	1"	3 15/32"	13/32"	1/4"	1/8"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9793T18	000000
				1 3/8"	2 3/8"	1"	3 19/32"	13/32"	5/16"	9/64"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9793T19	000000
				1 1/2"	2 1/2"	1"	3 23/32"	13/32"	3/8"	11/64"	Keyed	Socket Head	2	No	1/4"-20	3	1/4"	3	9793T21	000000
				1 3/4"	3"	1 1/4"	4 15/32"	1/2"	3/8"	11/64"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9793T22	000000


				1 15/16"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9793T23	000000
				2"	3 1/4"	1 1/4"	4 23/32"	1/2"	1/2"	7/32"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9793T24	000000
				2 1/4"	3 1/2"	1 1/4"	4 31/32"	1/2"	1/2"	15/64"	Keyed	Socket Head	2	No	5/16"-18	3	5/16"	3	9793T26	000000
				2 1/2"	4"	1 3/8"	5 23/32"	1/2"	5/8"	9/32"	Keyed	Socket Head	2	No	3/8"-16	3	3/8"	3	9793T28	000000
				3"	4 1/2"	1 3/8"	6 11/32"	1/2"	3/4"	21/64"	Keyed	Socket Head	2	No	3/8"-16	3	3/8"	3	9793T29	000000
				6 mm	16 mm	19 mm	38 mm	6.9 mm	—	—	Round	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9723T11	00000
				8 mm	18 mm	19 mm	41 mm	6.9 mm	2 mm	1 mm	Keyed	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9723T12	00000
		10 mm		24 mm	19 mm	45 mm	6.9 mm	3 mm	1.4 mm	Keyed	Socket Head	2	No	M3 × 0.5 mm	3	3 mm	3	9723T13	00000
		12 mm	28 mm	19 mm	55 mm	6.9 mm	4 mm	1.8 mm	Keyed	Socket Head	2	No	M4 × 0.7 mm	3	4 mm	3	9723T14	00000
		16 mm	34 mm	20.6 mm	63 mm	6.9 mm	5 mm	2.3 mm	Keyed	Socket Head	2	No	M5 × 0.8 mm	3	5 mm	3	9723T15	00000


		18 mm	36 mm	20.64 mm	63 mm	6.85 mm	6 mm	2.8 mm	Keyed	Socket Head	2	No	M5 × 0.8 mm	3	5 mm	3	9723T16	00000
		20 mm	40 mm	25.4 mm	69 mm	7.9 mm	6 mm	2.8 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9723T17	00000
		25 mm	45 mm	25.4 mm	75 mm	7.9 mm	8 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9723T18	00000
		30 mm	54 mm	25.4 mm	82 mm	7.9 mm	8 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9723T19	000000
		40 mm	60 mm	25.4 mm	92 mm	7.9 mm	12 mm	3.3 mm	Keyed	Socket Head	2	No	M6 × 1 mm	3	6 mm	3	9723T22	000000
		50 mm	78 mm	31.75 mm	114 mm	12.7 mm	14 mm	3.8 mm	Keyed	Socket Head	2	No	M8 × 1.25 mm	3	8 mm	3	9723T24	000000

Flange Extensions

Image of Product. Front orientation. Shaft Collar Flanges.

Extend the OD of the flange to mount larger components.

		Flange
	For Shaft Dia.	OD	Thick.	Mounting Fasteners Included		Each
Carbon Steel



		1/2"	3 1/4"	3/8"	Yes	9684T21	000000


		5/8"	3 5/8"	3/8"	Yes	9684T22	00000
		3/4"	4"	3/8"	Yes	9684T23	00000
		1"	4 1/4"	3/8"	Yes	9684T24	00000
		1 1/4"	4 1/2"	3/8"	Yes	9684T25	00000
		1 1/2"	4 3/4"	3/8"	Yes	9684T26	00000

Top-and-Bottom-Mount Two-Piece Shaft Collars

Use the flat ends and tapped holes on these two-piece collars to attach components or stack additional top-and-bottom-mount collars. Add them anywhere on a shaft when other parts are already attached or you can't access the ends. The collars clamp firmly and evenly without marring the shaft, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

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

Aluminum—One-third the weight of steel and corrosion resistant.

					Clamping Screw			Mounting Holes
	For Shaft Dia.	OD	Wd.	Flat-to-Flat Ht.	Type	No. Included	Mounting Fasteners Included	Thread Size	No. of		Each
Black-Oxide Carbon Steel



		1/4"	11/16"	5/16"	9/16"	Socket Head	2	Yes	4-40	2	5878T11	000000


		3/8"	7/8"	3/8"	3/4"	Socket Head	2	Yes	6-32	2	5878T16	00000
		1/2"	1 1/8"	13/32"	1"	Socket Head	2	Yes	8-32	2	5878T19	00000
		5/8"	1 5/16"	7/16"	1 3/16"	Socket Head	2	Yes	10-32	2	5878T24	00000
		3/4"	1 1/2"	1/2"	1 5/16"	Socket Head	2	Yes	1/4"-28	2	5878T27	00000
		7/8"	1 5/8"	1/2"	1 7/16"	Socket Head	2	Yes	1/4"-28	2	5878T31	00000
		1"	1 3/4"	1/2"	1 9/16"	Socket Head	2	Yes	1/4"-28	2	5878T34	00000
		1 1/8"	1 7/8"	1/2"	1 11/16"	Socket Head	2	Yes	1/4"-28	2	5878T37	00000
		1 1/4"	2 1/16"	1/2"	1 7/8"	Socket Head	2	Yes	1/4"-28	2	5878T41	00000
		1 3/8"	2 1/4"	9/16"	2 1/16"	Socket Head	2	Yes	1/4"-28	2	5878T44	00000
		1 1/2"	2 3/8"	9/16"	2 3/16"	Socket Head	2	Yes	1/4"-28	2	5878T47	00000


		1 5/8"	2 5/8"	11/16"	2 7/16"	Socket Head	2	Yes	5/16"-24	2	5878T51	000000
		1 3/4"	2 3/4"	11/16"	2 9/16"	Socket Head	2	Yes	5/16"-24	2	5878T54	000000
		2"	3"	11/16"	2 13/16"	Socket Head	2	Yes	5/16"-24	2	5878T57	000000
		10 mm	24 mm	9 mm	20 mm	Socket Head	2	No	M3 × 0.5 mm	2	5878T612	00000
		12 mm	28 mm	11 mm	24 mm	Socket Head	2	No	M4 × 0.7 mm	2	5878T615	00000
		16 mm	34 mm	13 mm	30 mm	Socket Head	2	No	M5 × 0.8 mm	2	5878T618	00000
		20 mm	40 mm	15 mm	36 mm	Socket Head	2	No	M6 × 1 mm	2	5878T622	00000
		25 mm	45 mm	15 mm	41 mm	Socket Head	2	No	M6 × 1 mm	2	5878T625	00000
		30 mm	54 mm	15 mm	50 mm	Socket Head	2	No	M6 × 1 mm	2	5878T628	00000
		35 mm	57 mm	15 mm	50 mm	Socket Head	2	No	M6 × 1 mm	2	5878T632	00000


		40 mm	60 mm	15 mm	55 mm	Socket Head	2	No	M6 × 1 mm	2	5878T635	00000


		303 Stainless Steel



				1/4"	11/16"	5/16"	9/16"	Socket Head	2	Yes	4-40	2	5878T14	00000


				3/8"	7/8"	3/8"	3/4"	Socket Head	2	Yes	6-32	2	5878T18	00000
				1/2"	1 1/8"	13/32"	1"	Socket Head	2	Yes	8-32	2	5878T23	00000
				5/8"	1 5/16"	7/16"	1 3/16"	Socket Head	2	Yes	10-32	2	5878T26	00000
				3/4"	1 1/2"	1/2"	1 5/16"	Socket Head	2	Yes	1/4"-28	2	5878T29	00000
				7/8"	1 5/8"	1/2"	1 7/16"	Socket Head	2	Yes	1/4"-28	2	5878T33	00000
				1"	1 3/4"	1/2"	1 9/16"	Socket Head	2	Yes	1/4"-28	2	5878T36	00000
				1 1/8"	1 7/8"	1/2"	1 11/16"	Socket Head	2	Yes	1/4"-28	2	5878T39	00000
				1 1/4"	2 1/16"	1/2"	1 7/8"	Socket Head	2	Yes	1/4"-28	2	5878T43	000000
				1 3/8"	2 1/4"	9/16"	2 1/16"	Socket Head	2	Yes	1/4"-28	2	5878T46	000000
				1 1/2"	2 3/8"	9/16"	2 3/16"	Socket Head	2	Yes	1/4"-28	2	5878T49	000000


				1 5/8"	2 5/8"	11/16"	2 7/16"	Socket Head	2	Yes	5/16"-24	2	5878T53	000000
				2"	3"	11/16"	2 13/16"	Socket Head	2	Yes	5/16"-24	2	5878T59	000000
				10 mm	24 mm	9 mm	20 mm	Socket Head	2	No	M3 × 0.5 mm	2	5878T613	00000
				12 mm	28 mm	11 mm	24 mm	Socket Head	2	No	M4 × 0.7 mm	2	5878T616	00000
				20 mm	40 mm	15 mm	36 mm	Socket Head	2	No	M6 × 1 mm	2	5878T623	00000
				25 mm	45 mm	15 mm	41 mm	Socket Head	2	No	M6 × 1 mm	2	5878T626	00000
				30 mm	54 mm	15 mm	50 mm	Socket Head	2	No	M6 × 1 mm	2	5878T629	00000


				Aluminum



1/4"	11/16"					5/16"	9/16"	Socket Head	2	Yes	4-40	2	5878T12	00000


3/8"	7/8"					3/8"	3/4"	Socket Head	2	Yes	6-32	2	5878T17	00000
1/2"	1 1/8"					13/32"	1"	Socket Head	2	Yes	8-32	2	5878T22	00000
5/8"	1 5/16"					7/16"	1 3/16"	Socket Head	2	Yes	10-32	2	5878T25	00000
3/4"	1 1/2"					1/2"	1 5/16"	Socket Head	2	Yes	1/4"-28	2	5878T28	00000
7/8"	1 5/8"					1/2"	1 7/16"	Socket Head	2	Yes	1/4"-28	2	5878T32	00000
1"	1 3/4"					1/2"	1 9/16"	Socket Head	2	Yes	1/4"-28	2	5878T35	00000
1 1/8"	1 7/8"					1/2"	1 11/16"	Socket Head	2	Yes	1/4"-28	2	5878T38	00000
1 1/4"	2 1/16"					1/2"	1 7/8"	Socket Head	2	Yes	1/4"-28	2	5878T42	00000
1 3/8"	2 1/4"					9/16"	2 1/16"	Socket Head	2	Yes	1/4"-28	2	5878T45	00000
1 1/2"	2 3/8"					9/16"	2 3/16"	Socket Head	2	Yes	1/4"-28	2	5878T48	00000


1 5/8"	2 5/8"					11/16"	2 7/16"	Socket Head	2	Yes	5/16"-24	2	5878T52	00000
1 3/4"	2 3/4"					11/16"	2 9/16"	Socket Head	2	Yes	5/16"-24	2	5878T55	00000
2"	3"					11/16"	2 13/16"	Socket Head	2	Yes	5/16"-24	2	5878T58	00000
12 mm	28 mm					11 mm	24 mm	Socket Head	2	No	M4 × 0.7 mm	2	5878T614	00000
16 mm	34 mm					13 mm	30 mm	Socket Head	2	No	M5 × 0.8 mm	2	5878T617	00000
20 mm	40 mm					15 mm	36 mm	Socket Head	2	No	M6 × 1 mm	2	5878T621	00000
30 mm	54 mm					15 mm	50 mm	Socket Head	2	No	M6 × 1 mm	2	5878T627	00000

Top-and-Bottom-Mount Shaft Collars

Use the flat ends and tapped holes on these collars to attach components or stack additional top-and-bottom-mount collars. Slide collars from one end of the shaft and tighten the clamping screw. They grip firmly and evenly without marring the surface, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

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

Aluminum—One-third the weight of steel and corrosion resistant.

					Clamping Screw			Mounting Holes
	For Shaft Dia., mm	OD, mm	Wd., mm	Flat-to-Flat Ht., mm	Type	No. Included	Mounting Fasteners Included	Thread Size	No. of		Each
Black-Oxide Carbon Steel



		10	24	9	20	Socket Head	1	No	M3 × 0.5 mm	2	7165N112	000000


		12	28	11	24	Socket Head	1	No	M4 × 0.7 mm	2	7165N115	00000
		16	34	13	30	Socket Head	1	No	M5 × 0.8 mm	2	7165N118	00000
		20	40	15	36	Socket Head	1	No	M6 × 1 mm	2	7165N122	00000
		25	45	15	41	Socket Head	1	No	M6 × 1 mm	2	7165N125	00000
		30	54	15	50	Socket Head	1	No	M6 × 1 mm	2	7165N128	00000
		35	57	15	50	Socket Head	1	No	M6 × 1 mm	2	7165N132	00000
		40	60	15	55	Socket Head	1	No	M6 × 1 mm	2	7165N135	00000


		303 Stainless Steel



				12	28	11	24	Socket Head	1	No	M4 × 0.7 mm	2	7165N116	00000


				16	34	13	30	Socket Head	1	No	M5 × 0.8 mm	2	7165N119	00000
				25	45	15	41	Socket Head	1	No	M6 × 1 mm	2	7165N126	00000


				Aluminum



						10	24	9	20	Socket Head	1	No	M3 × 0.5 mm	2	7165N111	00000


						12	28	11	24	Socket Head	1	No	M4 × 0.7 mm	2	7165N114	00000
						20	40	15	36	Socket Head	1	No	M6 × 1 mm	2	7165N121	00000
						35	57	15	50	Socket Head	1	No	M6 × 1 mm	2	7165N131	00000

Finish-Your-Own-Face Shaft Collars

Machine slots, holes, and grooves into the flush face as needed to attach components. These collars slide over the end of a shaft and tighten with clamping screws. They grip firmly and evenly without marring the shaft, so you can reposition or remove them later.

Black-Oxide Carbon Steel—Dark and matted for a finished look, but with minimal corrosion resistance. Best for dry environments.

				Clamping Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Black-Oxide Carbon Steel



		1/2"	1 1/4"	3/4"	Socket Head	2	9966K11	000000


		5/8"	1 1/2"	13/16"	Socket Head	2	9966K12	00000
		3/4"	1 3/4"	1"	Socket Head	2	9966K13	00000
		7/8"	1 7/8"	1"	Socket Head	2	9966K14	00000
		1"	2"	1"	Socket Head	2	9966K15	00000
		1 1/8"	2 1/8"	1"	Socket Head	2	9966K16	00000
		1 1/4"	2 1/4"	1"	Socket Head	2	9966K17	00000
		1 3/8"	2 3/8"	1"	Socket Head	2	9966K18	00000
		1 1/2"	2 1/2"	1"	Socket Head	2	9966K19	00000
		1 3/4"	3"	1 1/4"	Socket Head	2	9966K21	00000
		2"	3 1/4"	1 1/4"	Socket Head	2	9966K22	00000

Two-Piece Shaft Collars


For Round Shafts	For Keyed Shafts

Attach these collars anywhere along your shaft, which helps when other components are already installed or you can't access the end. They clamp firmly and evenly without marring the shaft, so you can reposition or remove collars later.

Carbon Steel—Strong and easy to machine. Use in dry environments, since moisture will cause steel to rust.

						For Round Shafts		For Keyed Shafts
				Clamping Screw				Keyway
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each	Wd.	Dp.		Each
Carbon Steel



		1/4"	11/16"	5/16"	Socket Head	2	9739T31	000000	—	—	———	0


		3/8"	7/8"	3/8"	Socket Head	2	9739T32	00000	—	—	———	0
		1/2"	1 1/8"	13/32"	Socket Head	2	9739T33	00000	—	—	———	0
		5/8"	1 5/16"	7/16"	Socket Head	2	9739T34	00000	—	—	———	0
		3/4"	1 1/2"	1/2"	Socket Head	2	9739T35	00000	3/16"	3/32"	9739T547	000000
		7/8"	1 5/8"	1/2"	Socket Head	2	9739T559	00000	—	—	———	0
		1"	1 3/4"	1/2"	Socket Head	2	9739T37	00000	1/4"	1/8"	9739T549	00000
		1 1/8"	1 7/8"	1/2"	Socket Head	2	9739T561	00000	1/4"	1/8"	9739T551	00000
		1 1/4"	2 1/16"	1/2"	Socket Head	2	9739T39	00000	1/4"	1/8"	9739T552	00000
		1 3/8"	2 1/4"	9/16"	Socket Head	2	9739T562	00000	5/16"	5/32"	9739T553	00000
		1 1/2"	2 3/8"	9/16"	Socket Head	2	9739T41	00000	3/8"	3/16"	9739T554	00000


		1 5/8"	2 3/4"	11/16"	Socket Head	2	9739T563	00000	—	—	———	0
		1 3/4"	2 3/4"	11/16"	Socket Head	2	9739T42	00000	3/8"	3/16"	9739T556	00000
		1 7/8"	3"	11/16"	Socket Head	2	9739T564	00000	—	—	———	0
		2"	3"	11/16"	Socket Head	2	9739T43	00000	1/2"	1/4"	9739T558	00000
		10 mm	24 mm	9 mm	Socket Head	2	9739T511	00000	—	—	———	0
		12 mm	28 mm	11 mm	Socket Head	2	9739T512	00000	—	—	———	0
		14 mm	30 mm	11 mm	Socket Head	2	9739T513	00000	—	—	———	0
		15 mm	34 mm	13 mm	Socket Head	2	9739T514	00000	—	—	———	0
		16 mm	34 mm	13 mm	Socket Head	2	9739T515	00000	—	—	———	0
		20 mm	40 mm	15 mm	Socket Head	2	9739T518	00000	—	—	———	0


		25 mm	45 mm	15 mm	Socket Head	2	9739T519	00000	—	—	———	0
		30 mm	54 mm	15 mm	Socket Head	2	9739T521	00000	—	—	———	0
		35 mm	57 mm	15 mm	Socket Head	2	9739T522	00000	—	—	———	0
		40 mm	60 mm	15 mm	Socket Head	2	9739T523	00000	—	—	———	0
		45 mm	73 mm	19 mm	Socket Head	2	9739T524	00000	—	—	———	0
		50 mm	78 mm	19 mm	Socket Head	2	9739T525	00000	—	—	———	0
		55 mm	82 mm	19 mm	Socket Head	2	9739T526	00000	—	—	———	0
		60 mm	88 mm	19 mm	Socket Head	2	9739T527	00000	—	—	———	0
		65 mm	93 mm	19 mm	Socket Head	2	9739T528	00000	—	—	———	0
		70 mm	98 mm	19 mm	Socket Head	2	9739T529	00000	—	—	———	0


		75 mm	103 mm	19 mm	Socket Head	2	9739T531	00000	—	—	———	0
		80 mm	108 mm	19 mm	Socket Head	2	9739T532	00000	—	—	———	0

Shaft Collars

Slide these collars from one end of your shaft and tighten the clamping screw. They grip firmly and evenly without marring the shaft, so you can reposition or remove them later.

Carbon Steel—Strong and easy to machine. Use in dry environments, since moisture will cause steel to rust.

				Clamping Screw
	For Shaft Dia.	OD	Wd.	Type	No. Included		Each
Carbon Steel



		1/4"	11/16"	5/16"	Socket Head	1	9739T1	000000


		3/8"	7/8"	3/8"	Socket Head	1	9739T2	00000
		1/2"	1 1/8"	13/32"	Socket Head	1	9739T3	00000
		5/8"	1 5/16"	7/16"	Socket Head	1	9739T4	00000
		3/4"	1 1/2"	1/2"	Socket Head	1	9739T5	00000
		1"	1 3/4"	1/2"	Socket Head	1	9739T7	00000
		1 1/4"	2 1/16"	1/2"	Socket Head	1	9739T9	00000
		1 1/2"	2 3/8"	9/16"	Socket Head	1	9739T11	00000
		1 3/4"	2 3/4"	11/16"	Socket Head	1	9739T12	00000
		2"	3"	11/16"	Socket Head	1	9739T13	00000