Potentiometer Knobs | McMaster-Carr

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89 Products

Indicating Knobs


Style 1—Ribbed Grip	Style 2—Ribbed Grip	Style 3—Ribbed Grip	Style 4—Ribbed Grip

Style 5—Knurled-Head Grip	Style 6—Ribbed Grip	Style 7—Ribbed Grip	Style 8—Single-Arm Grip

Style 9—Single-Arm Grip	Style 10—Single-Arm Grip	Style 11—Ribbed Grip	Style 12—Two-Arm Grip

Style 13—Single-Arm Grip	Style 14—Two-Arm Grip	Style 15—Single-Arm Grip	Style 16—Single-Arm Grip

Control devices with round or D-shaped shafts and view settings at a glance with a pointer.

Phenolic—Phenolic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance.

ABS—ABS knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. ABS has excellent impact resistance.

Anodized Aluminum—Aluminum knobs have mild corrosion resistance, are lightweight, and are nonmagnetic.

For D-Profile Shafts—Knobs for D-profile shafts simply press on and stay in place.

For Round Shafts—Knobs for round shafts include a set screw to secure them in place.

	Head			Hole
	Dia.	Wd.	Ht.	Dia.	Dp.	Cap Color	Insert Material	Set Screw Included	Temp. Range, ° F	Features		Each
Style 1—Ribbed Grip







				Black Phenolic—For D-Profile Shafts

				3/4"	—	1/2"	1/4"	7/16"	—	—	No	-30 to 400	Retaining Spring	6094K91	00000


				1 1/8"	—	5/8"	1/4"	1/2"	—	—	No	-30 to 400	Retaining Spring	6094K92	0000
				1 1/4"	—	3/4"	1/4"	5/8"	—	—	No	-30 to 400	Retaining Spring	6094K93	0000
				1 1/2"	—	11/16"	1/4"	1/2"	—	—	No	-30 to 400	Retaining Spring	6094K94	0000




						Black Phenolic—For Round Shafts

						3/4"	—	1/2"	1/4"	7/16"	—	—	Yes	-30 to 400	—	6094K72	0000


						1 1/8"	—	5/8"	1/4"	1/2"	—	—	Yes	-30 to 400	—	6094K74	0000
						1 1/2"	—	11/16"	1/4"	1/2"	—	Brass	Yes	-30 to 400	—	6094K57	0000


						Style 2—Ribbed Grip







										Black Phenolic—For D-Profile Shafts

										1 1/2"	—	7/8"	1/4"	3/4"	Silver	—	No	-30 to 400	Retaining Spring	6094K19	0000


										2 1/16"	—	7/8"	1/4"	13/16"	Silver	—	No	-30 to 400	—	6094K33	0000




												Black Phenolic—For Round Shafts

												3/4"	—	1/2"	1/4"	7/16"	Silver	—	Yes	-30 to 400	—	6094K73	0000


												3/4"	—	1/2"	1/4"	7/16"	Silver	Brass	Yes	-30 to 400	—	6094K18	0000
												13/16"	—	1/2"	1/4"	7/16"	Silver	Brass	Yes	-30 to 400	—	6094K81	0000
												1"	—	9/16"	1/4"	1/2"	Silver	Brass	Yes	-30 to 400	—	6094K82	0000
												1 1/8"	—	5/8"	1/4"	1/2"	Silver	—	Yes	-30 to 400	—	6094K75	0000
												1 5/16"	—	11/16"	1/4"	1/2"	Silver	Brass	Yes	-30 to 400	—	6094K83	0000
												1 1/2"	—	7/8"	1/4"	3/4"	Silver	—	Yes	-30 to 400	—	6094K42	0000
												1 1/2"	—	7/8"	1/4"	3/4"	Silver	Brass	Yes	-30 to 400	—	6094K29	0000
												1 3/4"	—	13/16"	1/4"	11/16"	Silver	Brass	Yes	-30 to 400	—	6094K84	0000
												2 1/16"	—	7/8"	1/4"	13/16"	Silver	—	Yes	-30 to 400	—	6094K31	0000
												2 1/16"	—	7/8"	1/4"	13/16"	Silver	Brass	Yes	-30 to 400	—	6094K32	0000


												Style 3—Ribbed Grip







												Black Phenolic—For Round Shafts

												1/2"	—	5/8"	1/4"	1/2"	—	—	Yes	-30 to 400	—	6094K71	0000


												5/8"	—	9/16"	1/4"	7/16"	—	Brass	Yes	-30 to 400	—	6094K85	0000
												13/16"	—	5/8"	1/4"	1/2"	—	Brass	Yes	-30 to 400	—	6094K86	0000
												15/16"	—	13/16"	1/4"	5/8"	—	Brass	Yes	-30 to 400	—	6094K37	0000
												1 3/8"	—	11/16"	1/4"	5/8"	—	Brass	Yes	-30 to 400	—	6094K87	0000


				Style 4—Ribbed Grip







														Black Phenolic—For Round Shafts

														9/16"	—	5/8"	1/4"	7/16"	Silver	—	Yes	-30 to 400	—	6094K21	0000


						13/16"	—							5/8"	1/4"	9/16"	Silver	—	Yes	-30 to 400	—	6094K22	0000
						1 1/16"	—							11/16"	1/4"	9/16"	Silver	—	Yes	-30 to 400	—	6094K23	0000


						Style 5—Knurled-Head Grip







														Anodized Aluminum—For Round Shafts

														1/2"	—	5/8"	1/8"	1/2"	—	—	Yes	—	—	6332K32	0000


										1/2"	—			5/8"	1/4"	1/2"	—	—	Yes	—	—	6332K34	00000
										15/16"	—			5/8"	1/4"	1/2"	—	—	Yes	—	—	6332K36	00000


										Style 6—Ribbed Grip







																Anodized Aluminum—For Round Shafts

																1/2"	—	5/8"	1/8"	1/2"	—	—	Yes	—	—	6332K38	0000


1/2"	—															5/8"	1/4"	1/2"	—	—	Yes	—	—	6332K42	0000
15/16"	—															5/8"	1/4"	1/2"	—	—	Yes	—	—	6332K44	00000


Style 7—Ribbed Grip







																Black ABS—For Round Shafts

																3/4"	—	11/16"	9/16"	1/2"	—	—	Yes	-15 to 200	—	2762N11	0000


																3/4"	—	3/4"	9/16"	1/2"	—	—	Yes	-15 to 200	—	2762N13	0000
																15/16"	—	3/4"	3/4"	1/2"	—	—	Yes	-15 to 200	—	2762N12	0000
				15/16"												—	13/16"	3/4"	1/2"	—	—	Yes	-15 to 200	—	2762N14	0000


				Style 8—Single-Arm Grip







																Black Anodized Aluminum—For Round Shafts

																1/2"	—	1"	1/8"	1/2"	—	—	Yes	—	—	5856T2	00000


																Style 9—Single-Arm Grip







									Black Phenolic—For D-Profile Shafts

									1 1/2"								—	3/4"	1/4"	5/8"	—	—	No	-30 to 400	Retaining Spring	6094K95	0000




																		Black Phenolic—For Round Shafts

																		3/4"	—	9/16"	1/4"	7/16"	—	—	Yes	-30 to 400	—	6094K88	0000


										1 1/8"								—	5/8"	1/4"	7/16"	—	—	Yes	-30 to 400	—	6094K89	0000
										1 1/2"	—							3/4"	1/4"	5/8"	—	—	Yes	-30 to 400	—	6094K13	0000
										1 1/2"	—							3/4"	1/4"	5/8"	—	Brass	Yes	-30 to 400	—	6094K27	0000


										Style 10—Single-Arm Grip







																		Black Phenolic—For Round Shafts

—	1 1/8"																	1/2"	1/4"	7/16"	—	Brass	Yes	-30 to 400	—	6094K26	0000


Style 11—Ribbed Grip







																		Black Phenolic—For Round Shafts

																		—	1 1/4"	5/8"	1/4"	1/2"	—	Brass	Yes	-30 to 400	—	6094K28	0000


																		—	1 1/4"	5/8"	1/4"	1/2"	Silver	—	Yes	-30 to 400	—	6094K15	0000


				Style 12—Two-Arm Grip







													Black Phenolic—For Round Shafts

													—						1 5/16"	5/8"	1/4"	9/16"	Silver	—	Yes	-30 to 400	—	6094K25	0000


													Style 13—Single-Arm Grip







																Black Phenolic—For D-Profile Shafts

																—			1 1/16"	5/8"	1/4"	1/2"	Silver	—	No	-30 to 400	Retaining Spring	6094K11	0000




																	Black Phenolic—For Round Shafts

																	—		1 1/16"	5/8"	1/4"	1/2"	Silver	—	Yes	-30 to 400	—	6094K24	0000


																	Style 14—Two-Arm Grip







																				Black Phenolic—For D-Profile Shafts

																				—	2"	5/8"	1/4"	1/2"	—	—	No	-30 to 400	—	6094K96	0000




																				Black Phenolic—For Round Shafts

—	1 1/4"																			5/8"	1/4"	1/2"	—	—	Yes	-30 to 400	—	6094K17	0000


—	1 1/4"																			5/8"	1/4"	1/2"	—	Brass	Yes	-30 to 400	—	6094K54	0000
—	2"	5/8"																		1/4"	1/2"	—	—	Yes	-30 to 400	—	6094K46	0000


Style 15—Single-Arm Grip







																				Black Phenolic—For Round Shafts

				—	1 11/16"															5/8"	1/4"	9/16"	—	—	Yes	-30 to 400	—	6094K12	0000


				—	1 11/16"															5/8"	1/4"	9/16"	—	Brass	Yes	-30 to 400	—	6094K14	0000


				Style 16—Single-Arm Grip







													Black Phenolic—For Round Shafts

													—					2 1/2"		5/8"	1/4"	5/16"	—	Brass	Yes	-30 to 400	—	6094K16	0000

Comfort-Grip Indicating Knobs

Style 1—Ribbed

Grip

Style 2—Ribbed

Grip

Style

3—Ribbed

Grip

Style

4—Single-Arm

Grip

Style 5—Smooth

Grip

A rubber coating or construction provides a comfortable grip. Use these knobs to control devices with round or D-shaped shafts and view settings at a glance with a pointer. All resist oil, grease, and solvents.

TPE Rubber—TPE knobs have more abrasion resistance than polypropylene knobs.

For D-Profile Shafts—Knobs for D-profile shafts simply press on and stay in place.

For Round Shafts—Knobs for round shafts include a set screw to secure them in place.

	Head		Hole					Each
	Dia.	Ht.	Dia.	Dp.	Set Screw Included	Temp. Range, ° F		1-9	10-Up
Style 1—Ribbed Grip







				Black Rubber-Coated Polypropylene—For Round Shafts

				5/8"	9/16"	1/4"	1/2"	Yes	-15 to 210	60955K61	00000	00000


				3/4"	3/8"	1/4"	5/16"	Yes	-15 to 210	60955K63	0000	0000
				3/4"	11/16"	1/4"	5/8"	Yes	-15 to 210	60955K62	0000	0000


				Style 2—Ribbed Grip







								Black Rubber-Coated Polypropylene—For Round Shafts

								1/2"	11/16"	1/8"	5/8"	Yes	-15 to 210	60955K71	0000	0000


								1 1/8"	9/16"	1/4"	7/16"	Yes	-15 to 210	60955K72	0000	0000
								1 1/2"	5/8"	1/4"	1/2"	Yes	-15 to 210	60955K74	0000	0000




										Black TPE—For D-Profile Shafts

										11 mm	14 mm	6 mm	11 mm	No	-20 to 120	6094K47	0000	0000


										15 mm	22 mm	6 mm	15 mm	No	-20 to 120	6094K48	0000	0000
										20 mm	18 mm	6 mm	15 mm	No	-20 to 120	6094K51	0000	0000


										Style 3—Ribbed Grip







														Black Rubber-Coated Polypropylene—For Round Shafts

														5/8"	13/16"	1/8"	3/4"	Yes	-15 to 210	60955K76	0000	0000


														1 1/4"	5/8"	1/4"	9/16"	Yes	-15 to 210	60955K73	0000	0000
														1 11/16"	3/4"	1/4"	5/8"	Yes	-15 to 210	60955K77	0000	0000




																Black TPE—For D-Profile Shafts

15 mm	22 mm															6 mm	15 mm	No	-20 to 120	6094K49	0000	0000


20 mm	18 mm															6 mm	15 mm	No	-20 to 120	6094K52	0000	0000


Style 4—Single-Arm Grip







																Black Rubber-Coated Polypropylene—For Round Shafts

																1 3/8"	7/8"	1/4"	11/16"	Yes	-15 to 210	60955K64	0000	0000


				1 7/8"	1"											1/4"	7/8"	Yes	-15 to 210	60955K75	0000	0000


				Style 5—Smooth Grip







																Black Rubber-Coated Polypropylene—For Round Shafts

																1 1/2"	11/16"	1/4"	7/16"	Yes	-15 to 210	7354K11	0000	0000


								2"	11/16"							1/4"	7/16"	Yes	-15 to 210	7354K13	0000	0000
								2 1/2"	11/16"							1/4"	7/16"	Yes	-15 to 210	7354K15	0000	0000

Turn-Counting Indicating Knobs


Style 1—Ribbed Grip	Style 2—Ribbed Grip	Style 3—Ribbed Grip	Style 4—Ribbed Grip

For monitoring the number of shaft turns on instrumentation, these knobs have easy-to-read scales or digits for quick and accurate readings. Use them on devices with round shafts. To secure these knobs in place, tighten the set screw.

Plastic—Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents.

Aluminum—Aluminum knobs have mild corrosion resistance, are lightweight, and are nonmagnetic.

	Head			Housing			Hole
	Dia.	Ht.	Max. Knob Turns	Wd.	Material	Ht.	Dia.	Dp.	Set Screw Included	Temp. Range, ° F		Each
Style 1—Ribbed Grip







				Black Aluminum—For Round Shafts

				1"	1"	10	—	—	—	1/4"	13/16"	Yes	35 to 400	3148K44	000000


				Style 2—Ribbed Grip







								Black Plastic—For Round Shafts

								1 1/16"	1 1/4"	10	—	—	—	1/4"	11/16"	Yes	-20 to 185	3148K17	000000


								Style 3—Ribbed Grip







												Black Plastic—For Round Shafts

												9/16"	1"	10	1"	Aluminum	1 3/4"	1/4"	1"	Yes	-20 to 185	3148K33	000000


												Style 4—Ribbed Grip







																Black Plastic—For Round Shafts

																7/8"	7/8"	15	—	—	—	1/8"	13/16"	Yes	—	3980T2	00000


																7/8"	15/16"	15	—	—	—	1/4"	13/16"	Yes	—	7436K39	00000
																1 13/16"	1"	20	—	—	—	1/4"	15/16"	Yes	—	7436K38	00000

Choose-a-Color Indicating Knobs

Image of Product. Front orientation. Indicating Knobs. Choose-a-Color.

Quickly identify equipment controls and components by their color. Use these knobs to control devices with round shafts and view settings at a glance with a pointer. Create custom threads or drill a hole in the side of the head to secure with a set screw. Made of TPE, all of these knobs have good abrasion resistance. They resist oil, grease, and solvents.

	Head		Hole					Each
	Dia.	Ht.	Dia.	Dp.	Temp. Range, ° F	Choose a Color		1-9	10-Up
Ribbed Grip







				TPE—For Round Shafts

				13/16"	11/16"	1/4"	5/8"	-20 to 250	Orange , Red , Yellow	2738N22	00000	00000


				11 mm	14 mm	6 mm	11 mm	-20 to 250	Orange , Red , Yellow	2738N21	0000	0000

Screw-Head Mount Precise-Control Indicating Knobs

Knurled-Head

Grip

Six-Arm

Grip

To build a custom precise-control knob or thumb screw, pair one of these knobs with a socket head screw. Press the knob and screw together using a bench vise or an arbor press. Then, turn the knob to move the screw 0.005" per graduation and make precise adjustments. Made of acetal, these knobs resist oil, grease, and solvents.

		Head
	For Thread Size	Dia.	Ht.	For Screw Head Type	Temp. Range, ° F		Each
Knurled-Head Grip







				Black Acetal

				1/4"-20	1"	5/16"	Socket	35 to 180	93228A400	00000


				Six-Arm Grip







								Black Acetal

								1/4"-20	1 1/2"	1/2"	Socket	35 to 180	93228A500	0000

Threaded-Stud Precise-Control Indicating Knobs

Knurled-Head Grip

Six-Arm Grip

Mount these knobs into a threaded hole. Turn the knob to move the stud 0.005" per graduation and make precise adjustments. Secure with the included locknut. Made of acetal, these knobs resist oil, grease, and solvents.

		Head		Stud
	Thread Size	Dia.	Ht.	Lg.	Material	Temp. Range, ° F	Features		Each
Knurled-Head Grip







				Black Acetal

				1/4"-20	1"	5/16"	2"	Steel	35 to 180	Locknut	93228A150	00000


				Six-Arm Grip







								Black Acetal

								1/4"-20	1 1/2"	1/2"	3"	Steel	35 to 180	Locknut	93228A250	0000

Dual-Control Comfort-Grip Indicating Knobs

These dual-control knobs operate independently to control two settings. They have a rubber coating for a comfortable grip. Use them on devices with round shafts to view settings at a glance with a pointer. To secure these knobs in place, tighten the set screw. Made of polypropylene, all resist oil, grease, and solvents.

For Round Shafts—Knobs for round shafts include a set screw to secure them in place.

	Head		Hole					Each
	Dia.	Ht.	Dia.	Dp.	Set Screw Included	Temp. Range, ° F		1-9	10-Up
Ribbed Grip







				Black Rubber-Coated Polypropylene—For Round Shafts

				5/8"	1 1/8"	1/8", 1/4"	1"	Yes	-15 to 200	2778N11	000000	00000