Brass Machine Component Knobs

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95 Products

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Threaded-Stud Knobs


Style 1	Style 14

Mount these knobs into a threaded hole. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Style 1—Knurled-Head Grip

Style 1

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

			Head		Hub				Each
	Thread Size	Stud Lg.	Dia.	Ht.	Dia.	Ht.	Stud Material		1-9	10-99	100-Up
Brass



		10-24	1"	3/4"	1/4"	1/2"	3/8"	Stainless Steel	5125K61	00000	00000	00000


		1/4"-20	1 1/4"	3/4"	1/4"	1/2"	3/8"	Stainless Steel	5125K62	0000	0000	0000
		1/4"-20	1 3/4"	1"	1/4"	5/8"	1/2"	Stainless Steel	5125K63	00000	00000	0000
		1/4"-28	1 3/4"	1"	1/4"	5/8"	1/2"	Stainless Steel	5125K64	00000	00000	0000
		5/16"-18	3"	1"	1/4"	5/8"	1/2"	Stainless Steel	5125K65	00000	00000	00000
		5/16"-18	3"	1 1/2"	5/16"	3/4"	11/16"	Stainless Steel	5125K66	00000	00000	00000
		5/16"-24	1 3/4"	1 1/2"	5/16"	3/4"	11/16"	Stainless Steel	5125K67	00000	00000	00000
		3/8"-16	1 3/4"	1 1/2"	5/16"	3/4"	11/16"	Stainless Steel	5125K68	00000	00000	00000
		3/8"-16	3"	1 1/2"	5/16"	3/4"	11/16"	Stainless Steel	5125K69	00000	00000	00000
		3/8"-24	1 3/4"	2"	3/8"	1"	3/4"	Stainless Steel	5125K71	00000	00000	00000
		1/2"-13	1 3/4"	2"	3/8"	1"	3/4"	Stainless Steel	5125K72	00000	00000	00000


		M5 × 0.8 mm	25 mm	19 mm	6 mm	13 mm	10 mm	Stainless Steel	5125K75	0000	0000	0000
		M6 × 1 mm	44 mm	25 mm	6 mm	16 mm	13 mm	Stainless Steel	5125K76	00000	00000	00000
		M8 × 1.25 mm	76 mm	38 mm	8 mm	19 mm	17 mm	Stainless Steel	5125K77	00000	00000	00000
		M10 × 1.5 mm	44 mm	51 mm	10 mm	25 mm	19 mm	Stainless Steel	5125K78	00000	00000	00000
		M12 × 1.75 mm	44 mm	51 mm	10 mm	25 mm	19 mm	Stainless Steel	5125K79	00000	00000	00000

Style 14—Four-Arm Grip

Style 14

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

			Head		Hub				Each
	Thread Size	Stud Lg.	Dia.	Ht.	Dia.	Ht.	Stud Material		1-9	10-99	100-Up
Brass



		1/4"-20	1 3/4"	1 1/2"	1/2"	5/8"	3/8"	Stainless Steel	5125K85	000000	000000	000000


		5/16"-18	1 3/4"	2"	1/2"	13/16"	1/2"	Stainless Steel	5125K86	00000	00000	00000
		3/8"-16	1 3/4"	2 1/2"	9/16"	1"	9/16"	Stainless Steel	5125K87	00000	00000	00000
		3/8"-16	3"	2 1/2"	9/16"	1"	9/16"	Stainless Steel	5125K88	00000	00000	00000
		1/2"-13	1 3/4"	2 1/2"	9/16"	1"	9/16"	Stainless Steel	5125K89	00000	00000	00000
		1/2"-13	3"	2 1/2"	9/16"	1"	9/16"	Stainless Steel	5125K91	00000	00000	00000
		M6 × 1 mm	44 mm	38 mm	13 mm	16 mm	10 mm	Stainless Steel	5125K94	00000	00000	00000
		M8 × 1.25 mm	44 mm	51 mm	13 mm	21 mm	13 mm	Stainless Steel	5125K95	00000	00000	00000
		M10 × 1.5 mm	44 mm	64 mm	14 mm	25 mm	14 mm	Stainless Steel	5125K96	00000	00000	00000
		M10 × 1.5 mm	76 mm	64 mm	14 mm	25 mm	14 mm	Stainless Steel	5125K97	00000	00000	00000
		M12 × 1.75 mm	76 mm	64 mm	14 mm	25 mm	14 mm	Stainless Steel	5125K99	00000	00000	00000

Threaded-Hole Knobs


Style 1	Style 21

Install these knobs on a threaded stud. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Style 1—Knurled-Head Grip

Style 1

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

	Thread		Head		Hub			Each
	Sz.	Dp.	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
Brass



		10-24	3/8"	3/4"	1/4"	1/2"	3/8"	5125K31	00000	00000


		1/4"-20	1/2"	1"	1/4"	5/8"	1/2"	5125K32	0000	0000
		1/4"-28	1/2"	1"	1/4"	5/8"	1/2"	5125K33	0000	0000
		5/16"-18	1/2"	1"	1/4"	5/8"	1/2"	5125K34	0000	0000
		5/16"-24	5/8"	1 1/2"	5/16"	3/4"	11/16"	5125K35	00000	00000
		3/8"-16	5/8"	2"	3/8"	1"	3/4"	5125K36	00000	00000
		3/8"-24	5/8"	2"	3/8"	1"	3/4"	5125K37	00000	00000
		1/2"-13	5/8"	2"	3/8"	1"	3/4"	5125K38	00000	00000
		M5 × 0.8 mm	10 mm	19 mm	6 mm	13 mm	10 mm	5125K39	0000	0000
		M6 × 1 mm	13 mm	25 mm	6 mm	16 mm	13 mm	5125K41	0000	0000
		M8 × 1.25 mm	16 mm	38 mm	8 mm	19 mm	17 mm	5125K42	00000	00000

Style 21—Four-Arm Grip

Style 21

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

	Thread		Head		Hub			Each
	Sz.	Dp.	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
Brass



		1/4"-20	1/2"	1"	3/8"	1/2"	1/2"	5125K11	000000	00000


		5/16"-18	9/16"	1 1/2"	3/8"	5/8"	3/8"	5125K12	00000	00000
		3/8"-16	5/8"	2"	1/2"	13/16"	1/2"	5125K13	00000	00000
		1/2"-13	5/8"	2 1/2"	9/16"	1"	9/16"	5125K14	00000	00000
		M6 × 1 mm	13 mm	25 mm	10 mm	13 mm	13 mm	5125K16	00000	0000
		M8 × 1.25 mm	13 mm	38 mm	10 mm	16 mm	10 mm	5125K17	00000	00000
		M10 × 1.5 mm	23 mm	51 mm	13 mm	21 mm	13 mm	5125K18	00000	00000
		M12 × 1.75 mm	14 mm	64 mm	14 mm	25 mm	14 mm	5125K19	00000	00000

Machinable-Hub Knobs


Style 1	Style 3

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 1—Knurled-Head Grip

Style 1

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

	Head		Hub			Each
	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
Brass



		3/4"	1/4"	1/2"	3/8"	5125K51	00000	00000


		1"	1/4"	5/8"	1/2"	5125K52	0000	0000
		1 1/2"	5/16"	3/4"	11/16"	5125K53	00000	00000
		2"	3/8"	1"	3/4"	5125K54	00000	00000

Style 3—Four-Arm Grip

Style 3

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

	Head		Hub			Each
	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
Brass



		1"	3/8"	1/2"	1/2"	5125K55	00000	00000


		1 1/2"	1/2"	5/8"	3/8"	5125K56	00000	00000
		2"	1/2"	13/16"	1/2"	5125K57	00000	00000

Machinable-Hub Knobs with Handle

A handle makes these knobs easy to turn. 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.

Knurled-Head Grip

303 Stainless Steel—303 stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.

6061 Aluminum—6061 aluminum knobs have mild corrosion resistance, are lightweight, and are nonmagnetic.

	Head		Hub		Handle			Each
	Dia.	Ht.	Dia.	Ht.	Lg.	Material		1-9	10-Up
303 Stainless Steel



		2"	9/16"	13/16"	9/16"	1 9/32"	Chrome-Plated Brass	6399K47	000000	000000


		3"	9/16"	1 1/4"	11/16"	1 1/2"	Chrome-Plated Brass	6399K48	00000	00000


		6061 Aluminum



				2"	9/16"	13/16"	9/16"	1 1/4"	Chrome-Plated Brass	6077K18	00000	00000


				3"	11/16"	1 1/4"	9/16"	1 1/2"	Chrome-Plated Brass	6077K21	00000	00000

Threaded Through-Hole Knobs


Style 1	Style 4

Long shafts can thread through these knobs for mounting versatility. The knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Style 1—Knurled-Head Grip

Style 1

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

	Thread		Head		Hub			Each
	Sz.	Dp.	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
Brass



		1/4"-20	5/8"	3/4"	1/4"	1/2"	3/8"	5125K21	00000	00000


		1/4"-20	3/4"	1"	1/4"	5/8"	1/2"	5125K22	0000	0000
		5/16"-18	3/4"	1"	1/4"	5/8"	1/2"	5125K23	0000	0000
		5/16"-18	1"	1 1/2"	5/16"	3/4"	11/16"	5125K24	00000	00000
		3/8"-16	1"	1 1/2"	5/16"	3/4"	11/16"	5125K25	00000	00000
		1/2"-13	1 1/8"	2"	3/8"	1"	3/4"	5125K26	00000	00000

Style 4—Four-Arm Grip

Style 4

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

	Thread		Head		Hub			Each
	Sz.	Dp.	Dia.	Ht.	Dia.	Ht.		1-9	10-Up
Brass



		1/4"-20	7/8"	1"	3/8"	1/2"	1/2"	5125K46	000000	00000


		5/16"-18	3/4"	1 1/2"	3/8"	5/8"	3/8"	5125K47	00000	00000
		3/8"-16	1"	2"	1/2"	13/16"	1/2"	5125K48	00000	00000
		1/2"-13	1 1/8"	2 1/2"	9/16"	1"	9/16"	5125K49	00000	00000

Unthreaded-Hole Knobs

Style 1

Tap custom threads or secure with a set screw to provide a firm grip to position, tighten, and hold fixtures, equipment, and machinery.

Style 1—Knurled-Head Grip

Style 1

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

	Hole		Head		Hub					Each
	Dia.	Dp.	Dia.	Ht.	Dia.	Ht.	Set Screw Thread Size	Set Screw Included		1-9	10-Up
Brass



		1/4"	1/2"	1"	1/4"	5/8"	1/2"	10-32	Yes	5125K1	000000	000000


		5/16"	5/8"	1 1/2"	5/16"	3/4"	11/16"	1/4"-20	Yes	5125K2	00000	00000
		3/8"	5/8"	2"	3/8"	1"	3/4"	5/16"-18	Yes	5125K3	00000	00000

Unthreaded-Hole Knobs with Handle

A handle makes these knobs easy to turn. Tap custom threads or secure with a set screw to provide a firm grip to position, tighten, and hold fixtures, equipment, and machinery.

Knurled-Head Grip

Image of Product. Front orientation. Knobs. Unthreaded-Hole Knobs with Handle.

303 Stainless Steel—303 stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.

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

	Hole		Head		Hub		Handle			Each
	Dia.	Dp.	Dia.	Ht.	Dia.	Ht.	Lg.	Material		1-9	10-Up
303 Stainless Steel



		3/8"	7/8"	2"	9/16"	13/16"	9/16"	1 1/4"	Chrome-Plated Brass	6399K49	000000	000000


		5/8"	7/8"	3"	9/16"	1 1/4"	11/16"	1 1/4"	Chrome-Plated Brass	6399K51	00000	00000


		Aluminum



				3/8"	7/8"	2"	9/16"	13/16"	9/16"	1 1/4"	Chrome-Plated Brass	6077K17	00000	00000


				5/8"	7/8"	3"	9/16"	1 1/4"	11/16"	1 1/4"	Chrome-Plated Brass	6077K19	00000	00000

Threaded-Hole-Mount Ball Knobs

Style 1

Install these traditional, easy-to-grip ball knobs on a threaded stud. They're good for control levers and push-pull rods.

Brass—Brass knobs have good corrosion resistance and are nonmagnetic.

	Thread				Each
	Size	Dp.	Head Dia.		1-9	10-Up
Style 1







				Brass

				10-24	3/8"	3/4"	60215K51	00000	00000


				10-32	3/8"	3/4"	60215K52	0000	0000
				10-32	3/8"	1"	60215K54	00000	0000
				1/4"-20	1/2"	1"	60215K55	00000	0000
				1/4"-20	5/8"	1 3/8"	60215K61	00000	00000
				1/4"-28	1/2"	1"	60215K56	00000	0000
				5/16"-18	1/2"	1"	60215K57	00000	0000
				5/16"-18	5/8"	1 3/8"	60215K63	00000	00000
				5/16"-24	1/2"	1"	60215K58	00000	0000
				5/16"-24	5/8"	1 3/8"	60215K64	00000	00000
				3/8"-16	1/2"	1"	60215K59	00000	0000


				3/8"-16	5/8"	1 3/8"	60215K65	00000	00000
				3/8"-16	3/4"	1 7/8"	60215K71	00000	00000
				3/8"-24	5/8"	1 3/8"	60215K66	00000	00000
				3/8"-24	3/4"	1 7/8"	60215K72	00000	00000
				7/16"-20	5/8"	1 3/8"	60215K67	00000	00000
				1/2"-13	5/8"	1 3/8"	60215K68	00000	00000
				1/2"-13	3/4"	1 7/8"	60215K73	00000	00000
				1/2"-20	5/8"	1 3/8"	60215K69	00000	00000
				5/8"-11	3/4"	1 7/8"	60215K75	00000	00000
				5/8"-18	3/4"	1 7/8"	60215K76	00000	00000