K-Couplings | McMaster-Carr

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System of Measurement

Shaft Diameter

For Shaft Misalignment Type

Overall Length

Material

Angular Misalignment Capability

For Rotary Motion

Finish

Length

Torque

Maximum Torque

REACH

RoHS

Hub Material

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

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

Performance

High Misalignment

Highly Corrosion Resistant

Parallel Misalignment Capability

119 Products

High-Parallel-and-Angular-Misalignment Precision Double Loop Couplings

A flexible center and offset hubs compensate for angular and parallel misalignment. These couplings also damp vibration and transfer torque fully between shafts (zero backlash). The nonmetallic loop center helps the couplings run smoothly and quietly without the need for lubrication.

Zinc-Plated Steel Hub with Polyurethane Rubber Loop—Strong steel hubs paired with a polyurethane rubber loop that damps vibration and has the same tear resistance as plastic. The hubs are plated to protect against occasional exposure to moisture.

316 Stainless Steel Hub with Polyurethane Rubber Loop—Strong, corrosion-resistant couplings that damp vibration and provide the same tear resistance as plastic.

Set-Screw Shaft Mount—Screws dig into your shaft for a secure hold.

						Misalignment Capability
	Choose a Shaft Dia.	OD	Overall Lg.	Max. Rotation Speed, rpm	Max. Torque, in·lbf	Parallel	Angular	For Shaft Type	Shaft Mount Type		Each







				Zinc-Plated Steel Hub with Polyurethane Rubber Loop

				3/16" × 3/16"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K31	000000


				3/16" × 1/4"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K32	00000
				3/16" × 5/16"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K301	00000
				1/4" × 1/4"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K33	00000
				1/4" × 1/4"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K41	00000
				1/4" × 3/8"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K38	00000
				1/4" × 3/8"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K48	00000
				1/4" × 1/2"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K306	00000
				5/16" × 5/16"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K35	00000
				5/16" × 5/16"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K42	00000
				5/16" × 3/8"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K36	00000


				3/8" × 3/8"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K34	00000
				3/8" × 3/8"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K43	00000
				3/8" × 3/8"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K51	00000
				3/8" × 1/2"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K44	00000
				3/8" × 1/2"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K58	00000
				3/8" × 5/8"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K316	00000
				1/2" × 1/2"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K45	00000
				1/2" × 1/2"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K52	00000
				1/2" × 1/2"	2"	2 7/16"	3,600	40	0.125"	15°	Round	Set Screw	6183K61	00000
				1/2" × 5/8"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K53	00000


				1/2" × 5/8"	2"	2 7/16"	3,600	40	0.125"	15°	Round	Set Screw	6183K62	00000
				5/8" × 5/8"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K54	00000
				5/8" × 5/8"	2"	2 7/16"	3,600	40	0.125"	15°	Round	Set Screw	6183K63	00000
				3 mm × 3 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T501	00000
				4 mm × 4 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T502	00000
				4 mm × 4 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T601	00000
				4 mm × 5 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T503	00000
				4 mm × 6 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T504	00000
				5 mm × 5 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T505	00000
				6 mm × 6 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T506	00000


				6 mm × 6 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T602	00000
				6 mm × 6 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T701	00000
				6 mm × 6 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T801	00000
				6 mm × 8 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T507	00000
				6 mm × 8 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T603	00000
				6 mm × 8 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T702	00000
				8 mm × 8 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T508	00000
				8 mm × 8 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T604	00000
				8 mm × 8 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T703	00000
				8 mm × 8 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T802	00000


				8 mm × 10 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T605	00000
				8 mm × 10 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T704	00000
				8 mm × 10 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T803	00000
				10 mm × 10 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T606	00000
10 mm × 10 mm				46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T705	00000
10 mm × 10 mm	51 mm			62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T804	00000
10 mm × 12 mm	43 mm			51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T607	00000
10 mm × 12 mm	46 mm			57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T706	00000
11 mm × 11 mm	43 mm			51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T608	00000
12 mm × 12 mm	43 mm	51 mm		3,600	12	0.125"	15°	Round	Set Screw	5384T609	00000
12 mm × 12 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T707	00000
12 mm × 12 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T806	00000
14 mm × 14 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T708	00000
14 mm × 14 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T807	00000
14 mm × 15 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T709	00000
15 mm × 15 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T711	00000
15 mm × 15 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T808	00000
16 mm × 16 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T712	00000
16 mm × 16 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T809	00000



		316 Stainless Steel Hub with Polyurethane Rubber Loop

		3/16" × 3/16"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K501	00000


		3/16" × 1/4"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K502	00000
		1/4" × 1/4"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K505	00000
		1/4" × 1/4"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K601	00000
		1/4" × 3/8"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K507	00000
		1/4" × 3/8"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K603	00000
		1/4" × 1/2"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K605	00000
		5/16" × 5/16"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K508	00000
		5/16" × 5/16"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K606	00000
		5/16" × 3/8"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K509	00000
		3/8" × 3/8"	7/8"	1 1/8"	3,600	3	0.094"	10°	Round	Set Screw	6183K511	00000


		3/8" × 3/8"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K611	00000
		3/8" × 3/8"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K701	000000
		3/8" × 1/2"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K613	00000
		3/8" × 1/2"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K703	000000
		3/8" × 5/8"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K705	000000
		1/2" × 1/2"	1 11/16"	1 27/32"	3,600	12	0.125"	15°	Round	Set Screw	6183K616	00000
		1/2" × 1/2"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K711	000000
		1/2" × 1/2"	2"	2 7/16"	3,600	40	0.125"	15°	Round	Set Screw	6183K801	000000
		1/2" × 5/8"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K713	000000
		1/2" × 5/8"	2"	2 7/16"	3,600	40	0.125"	15°	Round	Set Screw	6183K803	000000


		5/8" × 5/8"	1 13/16"	2 1/4"	3,600	28	0.188"	15°	Round	Set Screw	6183K716	000000
		5/8" × 5/8"	2"	2 7/16"	3,600	40	0.125"	15°	Round	Set Screw	6183K806	000000
		3 mm × 3 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T101	00000
		4 mm × 4 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T102	00000
		4 mm × 4 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T201	00000
		4 mm × 5 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T103	00000
		4 mm × 6 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T104	00000
		5 mm × 5 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T105	00000
		6 mm × 6 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T106	00000
		6 mm × 6 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T202	00000


		6 mm × 6 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T301	00000
		6 mm × 6 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T401	000000
		6 mm × 8 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T107	00000
		6 mm × 8 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T203	00000
		6 mm × 8 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T302	00000
		8 mm × 8 mm	22 mm	29 mm	3,600	3	0.094"	10°	Round	Set Screw	5384T108	00000
		8 mm × 8 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T204	00000
		8 mm × 8 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T303	00000
		8 mm × 8 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T402	000000
		8 mm × 10 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T205	00000


		8 mm × 10 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T304	00000
		8 mm × 10 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T403	000000
		10 mm × 10 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T206	00000
		10 mm × 10 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T305	00000
		10 mm × 10 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T404	000000
		10 mm × 12 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T207	00000
		10 mm × 12 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T306	00000
		11 mm × 11 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T208	00000
		12 mm × 12 mm	43 mm	51 mm	3,600	12	0.125"	15°	Round	Set Screw	5384T209	00000
12 mm × 12 mm		46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T307	00000
12 mm × 12 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T406	000000
14 mm × 14 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T308	00000
14 mm × 14 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T407	000000
14 mm × 15 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T309	00000
15 mm × 15 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T311	00000
15 mm × 15 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T408	000000
16 mm × 16 mm	46 mm	57 mm	3,600	28	0.188"	15°	Round	Set Screw	5384T312	00000
16 mm × 16 mm	51 mm	62 mm	3,600	40	0.125"	15°	Round	Set Screw	5384T409	000000