Press Fit Handles | McMaster-Carr

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54 Products

Screw-Head Mount Knobs


Style 1 (Front View)	Style 1 (Back View)	Style 2	Style 3	Style 4

Style 5	Style 6	Style 7 (Front View)	Style 7 (Back View)

To build a custom knob or thumb screw, pair one of these knobs with a hex or socket head screw and press the knob and screw together. All of these knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Made of plastic, they resist oil, grease, and solvents. Use color to identify equipment controls and components at a glance.

Style 1—Knurled-Head Grip

Style 1

(Front

View)

Style 1

(Back View)

		Head
	For Screw Size	Dia.	Ht.	Temp. Range, ° F	Choose a Color	Pkg. Qty.		Pkg.
Acetal—For Socket Head Screws



		No. 4	5/16"	11/64"	35 to 180	Black , Gray , Red , Yellow	100	000000000	000000


		No. 6	3/8"	3/16"	35 to 180	Black , Gray , Red , Yellow	100	000000000	00000
		No. 8	1/2"	7/32"	35 to 180	Black , Gray , Red , Yellow	100	000000000	00000
		No. 10	5/8"	1/4"	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		1/4"	3/4"	5/16"	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		1/4"	1"	5/16"	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		5/16"	1"	13/32"	35 to 180	Black , Gray , Red , Yellow	25	000000000	0000
		M3	10 mm	4.5 mm	35 to 180	Black , Gray , Red , Yellow	50	000000000	0000
		M4	13 mm	5.5 mm	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		M5	16 mm	6.6 mm	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		M6	19 mm	7.8 mm	35 to 180	Black , Gray , Red , Yellow	25	000000000	0000


		M6	26 mm	7.8 mm	35 to 180	Black , Gray , Red , Yellow	25	000000000	0000
		M8	26 mm	9.8 mm	35 to 180	Black , Gray , Red , Yellow	25	000000000	0000

Style 2—Single-Arm Grip

Style 2

		Head
	For Screw Size	Wd.	Ht.	Temp. Range, ° F	Choose a Color	Pkg. Qty.		Pkg.
Acetal—For Socket Head Screws



		No. 10	13/16"	11/32"	35 to 180	Black , Gray , Red , Yellow	50	000000000	000000


		1/4"	1"	7/16"	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		5/16"	1 3/16"	17/32"	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000

Style 3—Two-Arm Grip

Style 3

		Head
	For Screw Size	Wd.	Ht.	Temp. Range, ° F	Choose a Color	Pkg. Qty.		Pkg.
Acetal—For Socket Head Screws



		No. 10	1"	1/4"	35 to 180	Black , Gray , Red , Yellow	50	000000000	000000


		1/4"	1 1/4"	5/16"	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		5/16"	1 1/2"	13/32"	35 to 180	Black , Gray , Red , Yellow	25	000000000	0000
		3/8"	1 3/4"	15/32"	35 to 180	Black , Gray , Red , Yellow	25	000000000	0000
		M5	26 mm	6.6 mm	35 to 180	Black , Gray , Red , Yellow	50	000000000	0000
		M6	30 mm	7.8 mm	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		M8	38 mm	10.3 mm	35 to 180	Black , Gray , Red , Yellow	50	000000000	00000
		M10	45 mm	12.5 mm	35 to 180	Black , Gray , Red , Yellow	25	000000000	0000


		Nylon—For Socket Head Screws



				1/4"	1 1/8"	9/16"	-15 to 150	Black	1	00000000	0000

Style 4—Three-Arm Grip

Style 4

		Head
	For Screw Size	Dia.	Ht.	Temp. Range, ° F	Color	Pkg. Qty.		Pkg.
Polypropylene—For Socket Head Screws



		No. 10	3/4"	1/4"	-40 to 125	Black	10	000000000	00000

Style 5—Four-Arm Grip

Style 5

		Head
	For Screw Size	Dia.	Ht.	Temp. Range, ° F	Color	Pkg. Qty.		Pkg.
Polypropylene—For Hex Head Screws



		3/8"	2 1/4"	1"	-40 to 125	Black	10	000000000	000000

Style 6—Five-Arm Grip

Style 6

		Head
	For Screw Size	Dia.	Ht.	Temp. Range, ° F	Color	Pkg. Qty.		Pkg.
Polypropylene—For Hex Head Screws



		No. 10	1 1/4"	3/4"	-40 to 125	Black	10	000000000	000000

Style 7—Six-Arm Grip


Style 7 (Front View)	Style 7 (Back View)

		Head
	For Screw Size	Dia.	Ht.	Temp. Range, ° F	Choose a Color	Pkg. Qty.		Pkg.
Acetal—For Socket Head Screws



		1/4"	1 1/2"	15/32"	35 to 180	Black , Gray , Red , Yellow	10	000000000	00000


		5/16"	1 1/2"	13/32"	35 to 180	Black , Gray , Red , Yellow	10	000000000	0000
		3/8"	1 1/2"	15/32"	35 to 180	Black , Gray , Red , Yellow	10	000000000	0000
		M6	38 mm	12.2 mm	35 to 180	Black , Gray , Red , Yellow	10	000000000	0000
		M8	38 mm	10.4 mm	35 to 180	Black , Gray , Red , Yellow	10	000000000	0000
		M10	38 mm	12.5 mm	35 to 180	Black , Gray , Red , Yellow	10	000000000	0000

Screw-Head Mount Knob Assortments


Inch Assortment	Metric Assortment

Keep a convenient selection of knobs on hand. To build a custom 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. Use these knobs to provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Made of plastic, they resist oil, grease, and solvents.

	For Screw Size	Temp. Range, ° F		Each
Black Acetal







	For Socket Head Screws

	295	Knurled Head Single Arm Two Arm Six Arm	140 15 80 60	No. 4, No. 6, No. 8, No. 10, 1/4", 5/16" No. 10, 1/4", 5/16" No. 10, 1/4", 5/16", 3/8" 1/4", 5/16", 3/8"	35 to 180	000000000	0000000


	260	Knurled Head Two Arm Six Arm	120 80 60	M3, M4, M5, M6, M8 M5, M6, M8, M10 M6, M8, M10	35 to 180	000000000	000000

Screw-Head Mount Knobs with Messages

Use these knobs to display important messages. To build a custom 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. All of these knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Made of plastic, they resist oil, grease, and solvents.

Knurled-Head Grip


				Back View

		Head				Caution		Do Not Remove		Lock/Unlock		Service Access
	For Screw Size	Dia.	Ht.	Temp. Range, ° F	Pkg. Qty.		Pkg.		Pkg.		Pkg.		Pkg.
Black—For Socket Head Screws



		No. 8	1/2"	1/4"	32 to 180	5	000000000	00000	000000000	00000	000000000	00000	000000000	00000


		No. 10	5/8"	1/4"	32 to 180	5	000000000	0000	000000000	0000	000000000	0000	000000000	0000
		1/4"	3/4"	5/16"	32 to 180	5	000000000	0000	000000000	0000	000000000	0000	000000000	0000
		5/16"	1"	7/16"	32 to 180	5	000000000	0000	000000000	0000	000000000	0000	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