319 Aluminum Screws | McMaster-Carr

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7 Products

Machinable-Hub Knobs


Style 5	Style 7	Style 8

Mill specific holes or keyways in the hub to meet your specifications, or weld in place. These knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Style 5—Four-Arm Grip

Style 5

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

	Head		Hub			Each
	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
319 Aluminum



		1 1/4"	5/16"	9/16"	9/16"	0000000	00000	00000


		1 1/2"	3/8"	11/16"	11/16"	0000000	0000	0000
		2 1/8"	1/2"	7/8"	15/16"	0000000	0000	0000
		3"	11/16"	1 3/8"	1 1/4"	0000000	0000	0000

Style 7—Six-Arm Grip

Style 7

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

	Head		Hub			Each
	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
319 Aluminum



		1 1/2"	1/2"	3/4"	7/8"	00000000	00000	00000


		2"	3/4"	1"	7/8"	00000000	0000	0000

Style 8—Eight-Arm Grip

Style 8

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

	Head		Hub			Each
	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
319 Aluminum



		3 1/2"	3/4"	1 1/4"	1 1/8"	00000000	00000	00000