Master Lock No 4 - Revision history

Datagram at 16:19, 21 August 2025

2025-08-21T16:19:46Z

← Older revision		Revision as of 16:19, 21 August 2025
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	== Principles of operation ==		== Principles of operation ==

			:''See also [[Pin tumbler#Principles of operation\|Pin-tumbler (Principles of Operation)]]''

	The No. 4 cylinder is a [[Pin_tumbler\|pin-tumbler]] lock with four pin stacks and no [[security pin]]s. The cylinder typically uses the [[M1]] [[Key#Types_of_Keys\|key profile]] but may use other profiles, as well. The standard No. 4 can be opened in both directions but the "commercial" series body restricts opening to clockwise rotation. The No. 4 is not a [[key retaining]] padlock.		The No. 4 cylinder is a [[Pin_tumbler\|pin-tumbler]] lock with four pin stacks and no [[security pin]]s. The cylinder typically uses the [[M1]] [[Key#Types_of_Keys\|key profile]] but may use other profiles, as well. The standard No. 4 can be opened in both directions but the "commercial" series body restricts opening to clockwise rotation. The No. 4 is not a [[key retaining]] padlock.

Mgsecure at 14:08, 28 April 2023

2023-04-28T14:08:28Z

← Older revision		Revision as of 14:08, 28 April 2023
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	\| name = Master Lock No. 4		\| name = Master Lock No. 4
	\| Img = File:Master Lock No 4 front - FXE48772.png		\| Img = File:Master Lock No 4 front - FXE48772.png
	\| Img_size = ~~150px~~		\| Img_size = 200px
	\| maker = [[Master Lock]]		\| maker = [[Master Lock]]
	\| lock_type = [[Padlock]], [[Cylinder]]		\| lock_type = [[Padlock]], [[Cylinder]]

Mgsecure at 14:05, 28 April 2023

2023-04-28T14:05:39Z

← Older revision		Revision as of 14:05, 28 April 2023
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	The '''No. 4''' is a [[Pin_tumbler\|pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 4 uses a laminated brass padlock body with an internal key-in-knob-style [[cylinder]]. The inner cylinder uses four pin stacks and does not use any [[security pin]]s.		The '''No. 4''' is a [[Pin_tumbler\|pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 4 uses a laminated brass padlock body with an internal key-in-knob-style [[cylinder]]. The inner cylinder uses four pin stacks and does not use any [[security pin]]s.

	The No. 4 is a common low security padlock used in the United States. It is one of a line of laminated brass padlocks that ~~also~~ includes the [[Master Lock No 2\|Master Lock #2]], [[Master Lock No 4\|#4]], [[Master Lock No 6\|#6]], and [[Master Lock No 8\|#8]].		The No. 4 is a common low security padlock used in the United States. It is one of a line of laminated brass padlocks that includes the [[Master Lock No 2\|Master Lock #2]], [[Master Lock No 4\|#4]], [[Master Lock No 6\|#6]], and [[Master Lock No 8\|#8]].

	__TOC__		__TOC__

Mgsecure: /* Master Lock No. 4 */

2023-04-28T13:57:27Z

Master Lock No. 4

← Older revision		Revision as of 13:57, 28 April 2023
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	= ~~Master Lock No. 4 =~~		<span style="font-size: 188%; line-height:190%">{{PAGENAME}}</span>
			----

	{{Lock model		{{Lock model
	\| name = Master Lock No. 4		\| name = Master Lock No. 4
	\| Img = File:~~MasterNo4~~.~~jpg~~		\| Img = File:Master Lock No 4 front - FXE48772.png
	\| Img_size = 150px		\| Img_size = 150px
	\| maker = [[Master Lock]]		\| maker = [[Master Lock]]
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	The '''No. 4''' is a [[Pin_tumbler\|pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 4 uses a laminated brass padlock body with an internal key-in-knob-style [[cylinder]]. The inner cylinder uses four pin stacks and does not use any [[security pin]]s.		The '''No. 4''' is a [[Pin_tumbler\|pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 4 uses a laminated brass padlock body with an internal key-in-knob-style [[cylinder]]. The inner cylinder uses four pin stacks and does not use any [[security pin]]s.

	The No. 4 is a common low security padlock used in the United States.		The No. 4 is a common low security padlock used in the United States. It is one of a line of laminated brass padlocks that also includes the [[Master Lock No 2\|Master Lock #2]], [[Master Lock No 4\|#4]], [[Master Lock No 6\|#6]], and [[Master Lock No 8\|#8]].

	__TOC__		__TOC__
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	File:Master Lock No 4 keyway - FXE48774.png \| Keyway		File:Master Lock No 4 keyway - FXE48774.png \| Keyway
	File:Master Lock No 4 key - FXE48747.png \| Key		File:Master Lock No 4 key - FXE48747.png \| Key
			File:Master Lock No 2-8 grid - FXE48731-Edit.png \| ML #2, #4, #6, and #8.
	</gallery></div>		</gallery></div>

Mgsecure: /* Gallery */

2023-04-28T13:47:05Z

Gallery

← Older revision		Revision as of 13:47, 28 April 2023
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	== Gallery ==		== Gallery ==
	<div align="center"><gallery align="center">		<div align="center"><gallery align="center">
	File:Master Lock No 4 ~~Front~~ - FXE48772.png \| Front		File:Master Lock No 4 front - FXE48772.png \| Front
	File:Master Lock No 4 ~~Keyway~~ - FXE48774.png \| Keyway		File:Master Lock No 4 keyway - FXE48774.png \| Keyway
	File:Master Lock No 4 ~~Key~~ - FXE48747.png \| Key		File:Master Lock No 4 key - FXE48747.png \| Key
	</gallery></div>		</gallery></div>

Mgsecure: /* Gallery */

2023-04-28T13:45:53Z

Gallery

← Older revision		Revision as of 13:45, 28 April 2023
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	== Gallery ==		== Gallery ==
			<div align="center"><gallery align="center">
			File:Master Lock No 4 Front - FXE48772.png \| Front
			File:Master Lock No 4 Keyway - FXE48774.png \| Keyway
			File:Master Lock No 4 Key - FXE48747.png \| Key
			</gallery></div>

	== See also ==		== See also ==

Sandplum at 11:03, 2 March 2021

2021-03-02T11:03:11Z

← Older revision		Revision as of 11:03, 2 March 2021
Line 25:		Line 25:
	== Principles of operation ==		== Principles of operation ==

	The No. 4 cylinder is a [[pin-tumbler]] lock with four pin stacks and no [[security pin]]s. The cylinder typically uses the [[M1]] [[Key#Types_of_Keys\|key profile]] but may use other profiles, as well. The standard No. 4 can be opened in both directions but the "commercial" series body restricts opening to clockwise rotation. The No. 4 is not a [[key retaining]] padlock.		The No. 4 cylinder is a [[Pin_tumbler\|pin-tumbler]] lock with four pin stacks and no [[security pin]]s. The cylinder typically uses the [[M1]] [[Key#Types_of_Keys\|key profile]] but may use other profiles, as well. The standard No. 4 can be opened in both directions but the "commercial" series body restricts opening to clockwise rotation. The No. 4 is not a [[key retaining]] padlock.

	== Disassembly instructions ==		== Disassembly instructions ==
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	[[Category:Lock_models]]		[[Category:Lock_models]]
			[[Category:Master_Lock]]
	[[Category:Padlocks]]		[[Category:Padlocks]]
	[[Category:Pin-tumbler locks]]		[[Category:Pin-tumbler locks]]

Sandplum: /* Master Lock No. 4 */

2021-03-02T10:53:10Z

Master Lock No. 4

← Older revision		Revision as of 10:53, 2 March 2021
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	}}		}}

	The '''No. 4''' is a [[pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 4 uses a laminated brass padlock body with an internal key-in-knob-style [[cylinder]]. The inner cylinder uses four pin stacks and does not use any [[security pin]]s.		The '''No. 4''' is a [[Pin_tumbler\|pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 4 uses a laminated brass padlock body with an internal key-in-knob-style [[cylinder]]. The inner cylinder uses four pin stacks and does not use any [[security pin]]s.

	The No. 4 is a common low security padlock used in the United States.		The No. 4 is a common low security padlock used in the United States.
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	* [[Padlock]]		* [[Padlock]]
	* [[Pin-tumbler]]		* [[Pin_tumbler\|Pin-tumbler]]
	* [[Master Lock]]		* [[Master Lock]]

Sandplum: /* Master Lock No. 4 */

2021-03-02T10:51:11Z

Master Lock No. 4

← Older revision		Revision as of 10:51, 2 March 2021
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	\| maker = [[Master Lock]]		\| maker = [[Master Lock]]
	\| lock_type = [[Padlock]], [[Cylinder]]		\| lock_type = [[Padlock]], [[Cylinder]]
	\| lock_design = [[Pin-tumbler]]		\| lock_design = [[Pin_tumbler\|Pin-tumbler]]
	\| years_produced =		\| years_produced =
	\| patent =		\| patent =
	\| related =		\| related =
			\| spec_on = true
			\| spec_comptype = [[Pin_tumbler\|Pin-tumbler]]
			\| spec_comp = 4
	}}		}}

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	* [[Master Lock]]		* [[Master Lock]]

			[[Category:Lock_models]]
	[[Category:Padlocks]]		[[Category:Padlocks]]
	~~[[Category:Master Lock\|No 2]]~~
	[[Category:Pin-tumbler locks]]		[[Category:Pin-tumbler locks]]

TheCre8r: /* Master Lock No. 4 */ Fixed Image Link

2019-03-14T00:36:28Z

Master Lock No. 4: Fixed Image Link

← Older revision		Revision as of 00:36, 14 March 2019
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	{{Lock model		{{Lock model
	\| name = Master Lock No. 4		\| name = Master Lock No. 4
	\| Img = File:MasterNo4.~~jpeg~~		\| Img = File:MasterNo4.jpg
	\| Img_size = 150px		\| Img_size = 150px
	\| maker = [[Master Lock]]		\| maker = [[Master Lock]]