Precision Control Knobs | McMaster-Carr

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4 Products

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	000000000	00000


				Six-Arm Grip







								Black Acetal

								1/4"-20	1 1/2"	1/2"	3"	Steel	35 to 180	Locknut	000000000	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	000000000	00000


				Six-Arm Grip







								Black Acetal

								1/4"-20	1 1/2"	1/2"	Socket	35 to 180	000000000	0000