Toggle Switch Nuts | McMaster-Carr

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Fed. Spec. A-A-59588 Class 3A Grade 50

For Maximum Toggle Depth

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For Maximum Toggle Diameter

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Mounting Thread Type

139 Products

Steel Hex Panel Nuts

Fasten these panel nuts with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels.

NPSM Thread About NPSM Thread

Zinc-Plated Steel—Zinc-plated steel nuts resist corrosion in wet environments.

Black-Oxide Steel—Black-oxide steel nuts have a dark surface color.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/8	5/8"	1/8"	1	91862A101	00000


	1/8	5/8"	3/16"	1	91862A104	0000


	Black-Oxide Steel



			1/4	11/16"	1/4"	1	94162A140	0000


			3/8	13/16"	17/64"	1	94162A170	0000
			3/8	13/16"	9/32"	1	94162A180	0000
			3/8	13/16"	19/64"	1	94162A190	0000
			1/2	1"	21/64"	1	94162A210	0000

UNEF Thread About UNEF Thread

Zinc-Plated Steel—Zinc-plated steel nuts resist corrosion in wet environments.

Black-Oxide Steel—Black-oxide steel nuts have a dark surface color.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/4"-32	5/16"	5/64"	10	91862A105	00000


	1/4"-32	3/8"	3/32"	10	91862A106	0000
	5/16"-32	7/16"	7/64"	10	91862A110	0000
	3/8"-32	5/8"	3/32"	1	91862A112	0000
	7/16"-28	5/8"	3/32"	1	91862A116	0000
	15/32"-32	9/16"	5/64"	1	91862A119	0000
	15/32"-32	5/8"	3/32"	1	91862A123	0000
	15/32"-32	5/8"	9/16"	1	91862A126	0000
	1/2"-28	5/8"	3/32"	1	91862A127	0000


	Black-Oxide Steel



			3/8"-32	1/2"	3/32"	1	94162A310	0000


			7/16"-28	5/8"	3/32"	1	94162A360	0000
			1/2"-28	5/8"	3/32"	1	94162A430	0000
			1/2"-28	5/8"	1/8"	1	94162A440	0000
			1/2"-28	3/4"	3/8"	1	94162A450	00000
			5/8"-24	15/16"	3/8"	1	94162A460	00000
			11/16"-24	1"	27/64"	1	94162A470	00000
			3/4"-20	1"	27/64"	1	94162A480	00000
			7/8"-20	1 5/16"	31/64"	1	94162A490	00000

UNS Thread About UNS Thread

Zinc-Plated Steel—Zinc-plated steel nuts resist corrosion in wet environments.

Black-Oxide Steel—Black-oxide steel nuts have a dark surface color.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	1/4"-40	5/8"	3/16"	1	91862A108	00000


	5/8"-27	3/4"	1/8"	1	91862A129	0000


	Black-Oxide Steel



			1/4"-40	5/16"	1/16"	1	94162A510	0000


			1/4"-40	5/8"	3/16"	1	94162A520	0000
			5/8"-27	3/4"	1/8"	1	94162A530	0000

Metric Thread About Metric Thread

Zinc-Plated Steel—Zinc-plated steel nuts resist corrosion in wet environments.

	Wd., mm	Ht., mm	Pkg. Qty.		Pkg.
Zinc-Plated Steel



	M12 × 1.5 mm	17	6	1	91862A711	00000


	M14 × 1.5 mm	19	6	1	91862A712	0000
	M16 × 1.5 mm	22	6	1	91862A713	0000
	M18 × 1.5 mm	24	6	1	91862A714	0000
	M20 × 1.5 mm	27	6	1	91862A715	0000
	M24 × 1.5 mm	32	7	1	91862A716	0000
	M26 × 1.5 mm	36	8	1	91862A717	00000

Stainless Steel Hex Panel Nuts

All of these stainless steel panel nuts have some chemical resistance. They can be fastened with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they are extremely thin for use in tight spaces such as electrical panels.

NPSM Thread About NPSM Thread

18-8 Stainless Steel—18-8 stainless steel nuts have good chemical resistance. They may be mildly magnetic.

316 Stainless Steel—316 stainless steel nuts have excellent chemical resistance and can be used in saltwater environments.

	Wd.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/8	9/16"	1/8"	1	91862A531	00000


	1/8	5/8"	1/8"	1	91862A306	0000
	1/8	5/8"	3/16"	1	91862A310	0000
	1/4	11/16"	1/4"	1	91862A532	0000
	1/4	11/16"	9/32"	1	91862A534	0000
	3/8	13/16"	17/64"	1	91862A535	0000
	1/2	1"	21/64"	1	91862A538	0000
	1/2	1"	11/32"	1	91862A539	00000


	316 Stainless Steel



			1/8	5/8"	1/8"	1	94177A120	0000


			1/8	5/8"	3/16"	1	94177A130	0000
			1/4	11/16"	1/4"	1	94177A140	0000
			1/4	11/16"	17/64"	1	94177A150	00000
			3/8	13/16"	17/64"	1	94177A170	00000
			1/2	1"	21/64"	1	94177A210	00000

UNEF Thread About UNEF Thread

18-8 Stainless Steel—18-8 stainless steel nuts have good chemical resistance. They may be mildly magnetic.

Black-Oxide 18-8 Stainless Steel—Black-oxide 18-8 stainless steel nuts have a dark surface color.

316 Stainless Steel—316 stainless steel nuts have excellent chemical resistance and can be used in saltwater environments.

	Wd.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-32	5/16"	5/64"	10	91862A311	00000


	1/4"-32	3/8"	3/32"	10	91862A313	0000
	5/16"-32	3/8"	3/32"	1	91862A543	0000
	5/16"-32	7/16"	7/64"	10	91862A316	00000
	5/16"-32	1/2"	17/64"	1	91862A544	0000
	3/8"-32	1/2"	3/32"	1	91862A545	0000
	3/8"-32	9/16"	21/64"	1	91862A546	0000
	3/8"-32	5/8"	3/32"	1	91862A318	0000
	7/16"-28	5/8"	3/32"	1	91862A320	0000
	7/16"-28	11/16"	3/8"	1	91862A548	0000
	15/32"-32	9/16"	5/64"	1	91862A325	0000


	15/32"-32	9/16"	3/32"	1	91862A549	0000
	15/32"-32	5/8"	3/32"	1	91862A329	0000
	15/32"-32	5/8"	9/16"	1	91862A333	0000
	1/2"-28	5/8"	3/32"	1	91862A330	00000
	1/2"-28	5/8"	1/8"	1	91862A551	0000
	11/16"-24	1"	27/64"	1	91862A554	00000
	3/4"-20	1"	27/64"	1	91862A555	00000


	Black-Oxide 18-8 Stainless Steel



			5/16"-32	7/16"	7/64"	5	91862A576	00000


			3/8"-32	1/2"	3/32"	1	91862A578	0000
			7/16"-28	5/8"	3/32"	1	91862A584	0000
			15/32"-32	5/8"	9/16"	1	91862A589	0000
			1/2"-28	5/8"	3/32"	1	91862A591	00000
			5/8"-24	15/16"	3/8"	1	91862A594	00000
			11/16"-24	1"	27/64"	1	91862A595	00000
			3/4"-20	1"	27/64"	1	91862A596	00000


			316 Stainless Steel



					1/4"-32	5/16"	5/64"	1	94177A240	0000


					5/16"-32	3/8"	3/32"	1	94177A270	0000
					3/8"-32	1/2"	3/32"	1	94177A310	00000
					7/16"-28	5/8"	3/32"	1	94177A360	0000
					15/32"-32	5/8"	9/16"	1	94177A420	0000
					1/2"-28	5/8"	1/8"	1	94177A440	00000
					5/8"-24	15/16"	3/8"	1	94177A460	00000
					11/16"-24	1"	27/64"	1	94177A470	00000
					3/4"-20	1"	27/64"	1	94177A480	00000
					7/8"-20	1 5/16"	31/64"	1	94177A490	00000

UNS Thread About UNS Thread

18-8 Stainless Steel—18-8 stainless steel nuts have good chemical resistance. They may be mildly magnetic.

Black-Oxide 18-8 Stainless Steel—Black-oxide 18-8 stainless steel nuts have a dark surface color.

316 Stainless Steel—316 stainless steel nuts have excellent chemical resistance and can be used in saltwater environments.

	Wd.	Ht.	Pkg. Qty.		Pkg.
18-8 Stainless Steel



	1/4"-40	5/16"	1/16"	1	91862A557	000000


	1/4"-40	5/8"	3/16"	1	91862A315	0000
	5/8"-27	3/4"	1/8"	1	91862A338	0000


	Black-Oxide 18-8 Stainless Steel



			1/4"-40	5/8"	3/16"	1	91862A599	0000


			5/8"-27	3/4"	1/8"	1	91862A601	0000


			316 Stainless Steel



					1/4"-40	5/8"	3/16"	1	94177A520	0000


					5/8"-27	3/4"	1/8"	1	94177A530	0000

Brass Hex Panel Nuts

These panel nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. They can be fastened with a wrench for more torque while tightening than knurled panel nuts. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels.

NPSM Thread About NPSM Thread

Nickel-Plated Brass—Nickel-plated brass panel nuts have excellent resistance to chemicals and salt water.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Brass



	1/8	5/8"	1/8"	1	91862A212	00000


	1/8	5/8"	3/16"	1	91862A215	0000


	Nickel-Plated Brass



			1/8	1/2"	1/8"	10	91862A511	0000

UNEF Thread About UNEF Thread

Nickel-Plated Brass—Nickel-plated brass panel nuts have excellent resistance to chemicals and salt water.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Brass



	1/4"-32	5/16"	5/64"	10	91862A216	00000


	1/4"-32	3/8"	3/32"	10	91862A218	0000
	5/16"-32	7/16"	7/64"	10	91862A223	0000
	3/8"-32	5/8"	3/32"	1	91862A225	0000
	7/16"-28	5/8"	3/32"	1	91862A228	0000
	15/32"-32	5/8"	3/32"	1	91862A236	0000


	Nickel-Plated Brass



			1/4"-32	5/16"	5/64"	10	91862A516	0000


			1/4"-32	3/8"	3/32"	10	91862A515	0000
			5/16"-32	7/16"	7/64"	10	91862A518	0000
			3/8"-32	1/2"	3/32"	10	91862A521	0000
			7/16"-28	5/8"	3/32"	1	91862A523	0000
			15/32"-32	9/16"	5/64"	10	91862A525	0000
			15/32"-32	9/16"	3/32"	10	91862A526	0000
			1/2"-28	5/8"	1/8"	10	91862A527	0000

UNS Thread About UNS Thread

Nickel-Plated Brass—Nickel-plated brass panel nuts have excellent resistance to chemicals and salt water.

	Wd.	Ht.	Pkg. Qty.		Pkg.
Brass



	5/8"-27	3/4"	1/8"	1	91862A243	00000


	Nickel-Plated Brass



			1/4"-40	5/16"	1/16"	10	91862A517	0000


			5/8"-27	3/4"	1/8"	1	91862A529	0000

Steel Round Knurled-Grip Panel Nuts

These panel nuts are knurled to provide a secure grip for tightening and loosening by hand. Also known as dress nuts, they're extremely thin for use in tight spaces such as electrical panels. They're zinc plated to resist corrosion in wet environments.

UNEF Thread About UNEF Thread

	Dia.	Ht.		Each
Zinc-Plated Steel



	3/8"-32	5/8"	3/32"	91843A109	00000


	15/32"-32	5/8"	3/32"	91843A118	0000

UNS Thread About UNS Thread

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

	Dia.	Ht.		Each
Zinc-Plated Steel



	5/8"-27	3/4"	1/8"	91843A123	00000

Toggle Switch Covers

Protect toggle switches from moisture and dust by replacing panel mounting nuts with these rubber covers.

Mounting Thread		For Max. Toggle
Size	Type	Dp.	Dia.	Material	Includes	Environment	Enclosure Rating	Specs. Met	Certification	Choose a Color		Each
1/4"-40	UNS	0.37"	0.06"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray, Red, White	70205K2	00000
1/4"-40	UNS	0.5"	0.06"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray, Red, White	70205K3	0000
1/4"-40	UNS	0.5"	0.12"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Gray	70205K69	0000
15/32"-32	UNS	0.71"	0.22"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray, Red, White	70205K4	0000
15/32"-32	UNS	0.9"	0.22"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray	70205K75	0000
15/32"-32	UNS	0.92"	0.3"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray	70205K29	0000
15/32"-32	UNS	1.08"	0.4"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Black, Gray	70205K321	0000
1/2"-32	UNS	0.66"	0.22"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray	70205K77	0000
M12 × 0.75 mm	Metric	0.73"	0.22"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Black, Gray	70205K351	0000
M12 × 0.75 mm	Metric	0.85"	0.22"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Gray	70205K89	0000
M12 × 1 mm	Metric	0.64"	0.22"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Black, Gray	70205K341	0000
M12 × 1 mm	Metric	0.67"	0.23"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black	70205K26	0000
M12 × 1 mm	Metric	0.73"	0.22"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Black, Gray	70205K361	0000
M12 × 1 mm	Metric	0.85"	0.22"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Black, Gray	70205K381	0000

Seals for Toggle Switches

Create a seal around the base of a toggle to protect against moisture and dust while leaving the actuator exposed. To install, replace the panel mounting nuts with these seals.

Mounting Thread Size	For Max. Toggle Dia.	Material	Includes	Environment	Enclosure Rating	Specs. Met	Certification	Choose a Color		Each
1/4"-32	0.071"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Black, Gray	70205K631	00000
1/4"-40	0.047"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray, Red, White	70205K6	0000
15/32"-32	0.109"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray, Red, White	70205K5	0000
15/32"-32	0.21"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Gray	70205K38	00000
M12	0.1"	Rubber	Mounting Nut	Dusty, Submersible	IP68	Fed. Spec. A-A-59588	—	Black, Gray	70205K621	0000

Panel Seals for Toggle Switches

Seal the panel cutout around a toggle switch. Use these seals in place of panel mounting nuts to protect toggle switches against moisture and dust.

Mounting Thread Size	For Max. Toggle Dia.	Material	Includes	Specs. Met	Certification	Color		Each
15/32"-32	0.47"	Rubber	Mounting Nut	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Gray	70205K37	00000

Heavy Duty Toggle Switch Covers

With a nickel-plated brass cap, these covers are more impact resistant than rubber covers. Use them in place of panel mounting nuts to protect toggle switches from moisture and dust.

Mounting Thread		For Max. Toggle
Size	Type	Dp.	Dia.	Material	Includes	Environment	Enclosure Rating	Specs. Met	Certification		Each
15/32"-32	UNS	0.66"	0.22"	Rubber	Mounting Nut	Corrosive, Dusty, Oily, Outdoor, Submersible, Washdown, Wet	IP66, IP68, NEMA 6P, NEMA 13	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	70205K8	000000

Quick-Install Toggle Switch Covers

Install these covers without removing switches from the panel—covers fit over mounting hardware. They protect toggle switches from moisture and dust.

Mounting Thread		For Max. Toggle
Size	Type	Dp.	Dia.	Material	Includes	Specs. Met	Certification	Choose a Color		Each
15/32"-32	UNS	0.73"	0.25"	Rubber	Mounting Nut	Fed. Spec. A-A-59588 Class 3A Grade 50	C-UL Recognized Component, UL Recognized Component	Black, Gray, Red	70205K28	00000