Clamshell Lockouts | McMaster-Carr

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26 Products

Hinged Lockouts for Valve Hand Wheels

A hinged design makes mounting these lockouts easy. All prevent valve handles from turning. They help you comply with OSHA 29 CFR 1910.147 procedures for the control of energy sources that could injure workers.

For technical drawings and 3-D models, click on a part number.

Plastic
For Hand Wheel Dia.	For Max. No. of Padlocks	For Max. Padlock Shackle Dia.	Temp. Range, ° F	Language	Message	Specifications Met	Choose a Color		Each
1"-2 1/2"	1	3/8"	-25° to 200°	English, Spanish, French	Danger—Locked Out—Do Not Remove, Peligro—Bloqueado—No Remueva, Danger—Verrouillage—Ne Pas Enlever	OSHA Compliant 29 CFR 1910.147	Blue, Green, Red, Yellow	00000000	000000
2 1/2"-5"	1	3/8"	-25° to 200°	English, Spanish, French	Danger—Locked Out—Do Not Remove, Peligro—Bloqueado—No Remueva, Danger—Verrouillage—Ne Pas Enlever	OSHA Compliant 29 CFR 1910.147	Blue, Green, Red, Yellow	00000000	00000
5"-6 1/2"	1	3/8"	-25° to 200°	English, Spanish, French	Danger—Locked Out—Do Not Remove, Peligro—Bloqueado—No Remueva, Danger—Verrouillage—Ne Pas Enlever	OSHA Compliant 29 CFR 1910.147	Blue, Green, Red, Yellow	00000000	00000
6 1/2"-10"	1	3/8"	-25° to 200°	English, Spanish, French	Danger—Locked Out—Do Not Remove, Peligro—Bloqueado—No Remueva, Danger—Verrouillage—Ne Pas Enlever	OSHA Compliant 29 CFR 1910.147	Blue, Green, Red, Yellow	00000000	00000
10"-13"	1	3/8"	-25° to 200°	English, Spanish, French	Danger—Locked Out—Do Not Remove, Peligro—Bloqueado—No Remueva, Danger—Verrouillage—Ne Pas Enlever	__	Blue, Green, Red, Yellow	00000000	00000

Nestable Lockouts for Valve Hand Wheels

Each lockout rotates into itself, making installation in tight spaces easier than other lockouts. All prevent valve handles from turning and include write-on labels. They help you comply with OSHA 29 CFR 1910.147 procedures for the control of energy sources that could injure workers.

For technical drawings and 3-D models, click on a part number.

Plastic
For Hand Wheel Dia.	For Max. No. of Padlocks	For Max. Padlock Shackle Dia.	Temp. Range, ° F	Color	Language	Message	Specifications Met		Each
1"-3"	2	9/32"	-50° to 350°	Red	English, Spanish, French	Danger—Do Not Operate, Peligro—No Usar, Danger—Ne Pas Utiliser	OSHA Compliant 29 CFR 1910.147	0000000	000000
2"-5"	3	9/32"	-50° to 350°	Red	English, Spanish, French	Danger—Do Not Operate, Peligro—No Usar, Danger—Ne Pas Utiliser	OSHA Compliant 29 CFR 1910.147	0000000	00000
4"-6 1/2"	4	9/32"	-50° to 350°	Red	English, Spanish, French	Danger—Do Not Operate, Peligro—No Usar, Danger—Ne Pas Utiliser	OSHA Compliant 29 CFR 1910.147	0000000	00000
6"-10"	4	9/32"	-50° to 350°	Red	English, Spanish, French	Danger—Do Not Operate, Peligro—No Usar, Danger—Ne Pas Utiliser	OSHA Compliant 29 CFR 1910.147	0000000	00000
8"-13"	4	9/32"	-50° to 350°	Red	English, Spanish, French	Danger—Do Not Operate, Peligro—No Usar, Danger—Ne Pas Utiliser	OSHA Compliant 29 CFR 1910.147	0000000	00000

Two-Piece Lockouts for Valve Hand Wheels

Prevent valve hand wheels from turning. These lockouts help you comply with OSHA 29 CFR 1910.147 procedures for the control of energy sources that could injure workers.

For technical drawings and 3-D models, click on a part number.

Plastic
For Hand Wheel Dia.	For Max. No. of Padlocks	For Max. Padlock Shackle Dia.	Temp. Range, ° F	Choose a Color	Specifications Met		Each
1"-6 1/2"	3	3/8"	-50° to 350°	Red, Yellow	OSHA Compliant 29 CFR 1910.147	00000000	000000

Valve Handle Lockouts

Stop gas and fluid valve handles from opening and closing during maintenance. Valve lockouts like these help you comply with OSHA 29 CFR 1910.147, which requires handles on pneumatic and hydraulic systems to be locked out during maintenance to prevent injuries.

Hinged lockouts secure the valve handle in any position. They have a one-piece design that stays together for easy storage.

Style G

G (Padlocks Not Included)

For Handle
Lg.	Thick.	Min. Padlock Vertical Shackle Clearance	For Max. No. of Padlocks	For Max. Padlock Shackle Dia.	Temp. Range, °F	Color	Label Included	Specifications Met		Each
Hinged—Locks in Closed and Open Position
Plastic
1/2"-8"	3/4"-2"	3/4"	4	5/16"	-40° to 210°	Red	No	OSHA Compliant 29 CFR 1910.147	00000000	000000

Electrical Plug Lockouts

For up to Four Padlocks (Padlock Not Included)

For up to Six Padlocks (Padlock Not Included)

Place a plug into the cylinder and padlock so the plug can't be used. All of these lockouts are for use with a standard electrical plug that has a single cord. They help you comply with OSHA 29 CFR 1910.147 procedures for the control of energy sources that could injure workers.

Lockouts for up to four or six padlocks let multiple workers add their own padlock, keeping everyone safe until all of the maintenance work is done. Those for up to six padlocks are also designed to hold a forklift plug with two cords.

For technical drawings and 3-D models, click on a part number.

			For Plug		Overall
For Max. No. of Padlocks	For Max. Padlock Shackle Dia.	For Max. Cord Dia.	Max. Lg.	Wd.	Lg.	Wd.	Ht.	Dia.	Temp. Range, ° F	Label Included	Message	Specifications Met		Each
Yellow Plastic
4	3/8"	1 1/8"	4 3/4"	1 1/2"-2 3/4"	7 1/4"	__	__	4 1/4"	-20° to 140°	No	__	OSHA Compliant 29 CFR 1910.147	00000000	000000
Red Plastic
6	9/32"	1 1/8", 1", 1"	6 3/4"	1/2"-2 1/2"	7 1/4"	4 1/4"	3"	__	-40° to 300°	Yes	Danger—Do Not Operate—Equipment Locked Out	OSHA Compliant 29 CFR 1910.147	00000000	00000

Battery Cable Connector Lockouts

Hinged—For 1 Battery Cable

Hinged—For 2 Battery Cables

Padlock these lockouts over the ends of battery cables to keep forklifts, pallet jacks, and other machinery powered off during maintenance. They signal that equipment is being serviced, preventing accidental startups. These lockouts have space for two padlocks, so teams can safely perform two maintenance tasks at once.

Made from nonconductive plastic, they insulate battery terminals and protect workers from accidental shocks, helping you comply with OSHA 29 CFR 1910.147 requirements for the control of electricity. These lockouts are also rated UL 94 HB, which means they have been tested in a horizontal position for flame resistance; the slow-burning plastic keeps flames from spreading.

Hinged lockouts fully enclose battery cable ends and inline connections. Fit battery connectors, such as lugs and terminal clamps, over the internal post to hold cables in place.

For Max. Connector				Cable Opening			Overall
Lg.	Wd.	Ht.	For No. of Battery Cables	Wd.	Ht.	Post Dia.	Lg.	Wd.	Ht.	For Max. No. of Padlocks	For Max. Padlock Shackle Dia.	Temp. Range, °F	Color	Specifications Met		Each
Hinged
Plastic
2 5/8"	1 1/2"	1 1/4"	1	1"	1"	1/4"	3 3/4"	2 7/8"	1 3/8"	2	5/16"	-40° to 212°	Red	OSHA Compliant 29 CFR 1910.147, UL 94 HB	0000000	000000
2 5/8"	2 3/4"	1 5/8"	2	2"	1 3/8"	1/4"	5 3/4"	4 1/8"	1 3/4"	2	5/16"	-40° to 212°	Red	OSHA Compliant 29 CFR 1910.147, UL 94 HB	0000000	00000

Push-Button Safety Covers

Lock out the on/off or emergency-stop buttons on machinery to prevent accidental or unauthorized startups, such as during maintenance. These lockout covers secure with padlocks and indicate to workers that a button is off for safety. By disabling push buttons, these safety covers also help you comply with OSHA 29 CFR 1910.147 lockout requirements for maintaining machinery.

Hinged safety covers have a door that flips shut. They mount permanently and encase two button sizes—22 mm or 30 mm. Snap off the tabs around the mounting hole to fit 30 mm buttons.

Hinged

	Overall
For Panel Cutout Dia.	Wd.	Ht.	Dp.	For Max. No. of Padlocks	For Max. Padlock Shackle Dia.	Specifications Met	Color		Each
Plastic
22 mm, 30 mm (7/8", 1 3/16")	1 3/4"	1 3/4"	1 7/8"	1	5/16"	OSHA Compliant 29 CFR 1910.147	Clear	0000000	000000

Wall Switch Lockouts

Mount this lockout over toggle- and rocker-style wall switches to make the switch inaccessible. Switches can be locked out in either the on or off position. When not in use, the cover flips up to allow normal switch operation. Lockout mounts using the screws from your switch cover plate.

For technical drawings and 3-D models, click on a part number.

Overall
Lg.	Wd.	Dp.	For Max. No. of Padlocks	For Max. Padlock Shackle Dia.	Color	Language	Message		Each
Plastic
4 3/4"	1 3/4"	1"	1	9/32"	Red	English/Spanish, English/French	Danger—Locked Out Do Not Remove/Peligro—Cerrado No Lo Quite, Danger—Locked Out Do Not Remove/Danger—Verrouille Ne Pas Enlever	00000000	000000

Wall-Mount Electrical and Valve Lockout Sets with Padlocks

Sets contain items for group electrical and valve lockouts and are furnished in a yellow plastic case that mounts to the wall to keep the items organized in a central location. The padlocks, hasps, and lockouts are red. They help you comply with OSHA 29 CFR 1910.147 procedures for the control of energy sources that could injure workers.

						Mounting Holes
For Use With	Includes	Ht.	Wd.	Dp.	Fasteners Included	No.	Screw Size	Specifications Met		Each
Electrical Controls, Electrical Plugs, Valves	1 Each: Cable Lockout 1 Each: Snap-On Lockout Hasp 2 Each: Lockout Hasps 2 Each: Plug Lockouts 2 Each: Valve Handle Lockouts (Fits 3/8 to 4 Pipe Size) 2 Each: Wall Switch Lockouts 4 Valve Wheel Lockouts (1 Each that fits 1"-3", 2"-5", 4"-6 1/2", and 6"-10" Diameter Wheels) 6 Each: 1/4" Shackle Diameter Keyed Differently Padlocks with Labels 8 Each: Circuit Breaker Lockouts 24 Each: Tags	27"	23 1/2"	4 1/2"	No	8	No. 10	OSHA Compliant 29 CFR 1910.147	0000000	0000000

Nestable Lockout Sets for Valve Hand Wheels

Each lockout rotates into itself, making installation in tight spaces easier than other lockouts. The lockouts are red. They help you comply with OSHA 29 CFR 1910.147 procedures for the control of energy sources that could injure workers.

For technical drawings and 3-D models, click on a part number.

For Use With	For Valve Control Type	Includes	Specifications Met		Each
Valves	Hand Wheel	1 Each: 1" to 3" Valve Hand Wheel Lockout 1 Each: 2" to 5" Valve Hand Wheel Lockout 1 Each: 4" to 6 1/2" Valve Hand Wheel Lockout 1 Each: 6" to 10" Valve Hand Wheel Lockout 1 Each: 8" to 13" Valve Hand Wheel Lockout	OSHA Compliant 29 CFR 1910.147	0000000	0000000

Electrical and Valve Lockout Sets with Padlocks

Sets contain items for group electrical and valve lockouts and are furnished in a case or box that mounts to the wall to keep the items organized in a central location. The padlocks, hasps, and lockouts are red. They help you comply with OSHA 29 CFR 1910.147 procedures for the control of energy sources that could injure workers.

For Use With	Includes	Specifications Met		Each
Electrical Controls, Electrical Plugs, Valves	1 Each: Plug Prong Lockout 1 Each: Adjustable Ball Valve Lockout 1 Each: Wall Switch Cover 6 Each: Tags 3 Each: Lockout Hasps 1 Each: Plug Lockout 1 Each: Hoist Cover 1 Each: Cable Lockout 3 Each: 1/4" Shackle Diameter Keyed Alike Padlocks with Labels 3 Valve Wheel Lockouts (1 Each that fits 1"-3", 2"-5", and 4"-6 1/2" Diameter Wheels) 5 Each: Circuit Breaker Lockouts Plastic Box	OSHA Compliant 29 CFR 1910.147	0000000	0000000
Electrical Controls, Electrical Plugs, Valves	1 Each: Wall Switch Cover 2 Each: Valve Lockouts 11 Each: Circuit Breaker Lockouts 6 Each: Lockout Hasps 1 Each: Cable Lockout 3 Valve Wheel Lockouts (1 Each that fits 1"-3", 2"-5", and 4"-6 1/2" Diameter Wheels) 6 Each: 1/4" Shackle Diameter Keyed Differently Padlocks with Labels 12 Each: Tags 2 Each: Plug Lockouts Carrying Case	OSHA Compliant 29 CFR 1910.147	0000000	000000

Keyed Alike Locking Door Knob Guards

Choose this guard if you need several door knob guards that open with the same key. It blocks access to door knobs.

For technical drawings and 3-D models, click on a part number.

For Knob Dia.	ID	OD	Inside Dp.	Keying	For Door Swing Direction	Material	Finish		Each
1 1/2"-2 5/16"	2 3/8"	2 7/8"	1 7/8"	Keyed Alike	Left, Right	Aluminum	Painted Gray	00000000	000000

Locking Door Knob Guards

Choose this guard if you need door knob guards that each open with a different key. It blocks access to door knobs.

For technical drawings and 3-D models, click on a part number.

For Door Knob Dia.	ID	OD	Inside Dp.	Keying	For Door Swing Direction	Material	Finish		Each
1 1/2"-2 5/16"	2 3/8"	2 7/8"	1 7/8"	Keyed Differently	Left, Right	Aluminum	Painted Gray	00000000	000000

Locking Door Handle Guards

Choose this guard if you need door handle guards that each open with a different key. It blocks access to door handles.

For technical drawings and 3-D models, click on a part number.

ID	OD	Inside Dp.	Keying	For Door Swing Direction	Material	Finish		Each
2 3/8"	2 7/8"	1 7/8"	Keyed Differently	Left, Right	Aluminum	Painted Gray	00000000	000000

Keyed Alike Locking Door Handle Guards

Choose this guard if you need several door handle guards that open with the same key. It blocks access to door handles.

For technical drawings and 3-D models, click on a part number.

ID	OD	Inside Dp.	Keying	For Door Swing Direction	Material	Finish		Each
2 3/8"	2 7/8"	1 7/8"	Keyed Alike	Left, Right	Aluminum	Painted Gray	00000000	000000