Master Lock No 1 - Revision history

Datagram at 16:17, 21 August 2025

2025-08-21T16:17:51Z

← Older revision		Revision as of 16:17, 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. 1 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. 1 can be opened in both directions but the "commercial" series body restricts opening to clockwise rotation. The No. 1 is not a [[key retaining]] padlock.		The No. 1 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. 1 can be opened in both directions but the "commercial" series body restricts opening to clockwise rotation. The No. 1 is not a [[key retaining]] padlock.

LockpickingDev: /* Gallery */

2024-08-28T03:22:52Z

Gallery

← Older revision		Revision as of 03:22, 28 August 2024
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	File:Master Lock No. 1 insides.jpg\|thumb\|alt=Master Lock No. 1 insides\|Master Lock No. 1 insides		File:Master Lock No. 1 insides.jpg\|thumb\|alt=Master Lock No. 1 insides\|Master Lock No. 1 insides
	File:Master Lock No. 1 Pins.jpg\|thumb\|alt=Master Lock No. 1 Pins\|Master Lock No. 1 Pins		File:Master Lock No. 1 Pins.jpg\|thumb\|alt=Master Lock No. 1 Pins\|Master Lock No. 1 Pins
	[[File:Master Lock No. 1 Actuator (1).jpg\|thumb\|alt=Master Lock No. 1 Actuator (1)\|Master Lock No. 1 Actuator (1)]]		File:Master Lock No. 1 Actuator (1).jpg\|thumb\|alt=Master Lock No. 1 Actuator (1)\|Master Lock No. 1 Actuator (1)
	[[File:Master Lock No. 1 Actuator (2).jpg\|thumb\|alt=Master Lock No. 1 Actuator (2)\|Master Lock No. 1 Actuator (2)]]		File:Master Lock No. 1 Actuator (2).jpg\|thumb\|alt=Master Lock No. 1 Actuator (2)\|Master Lock No. 1 Actuator (2)
	[[File:Master Lock No. 1 Actuator (3).jpg\|thumb\|alt=Master Lock No. 1 Actuator (3)\|Master Lock No. 1 Actuator (3)]]		File:Master Lock No. 1 Actuator (3).jpg\|thumb\|alt=Master Lock No. 1 Actuator (3)\|Master Lock No. 1 Actuator (3)
	[[File:Master Lock No. 1 Actuator (4).jpg\|thumb\|alt=Master Lock No. 1 Actuator (4)\|Master Lock No. 1 Actuator (4)]]		File:Master Lock No. 1 Actuator (4).jpg\|thumb\|alt=Master Lock No. 1 Actuator (4)\|Master Lock No. 1 Actuator (4)
	</gallery></div>		</gallery></div>

LockpickingDev: /* Gallery */

2024-08-28T03:22:37Z

Gallery

← Older revision		Revision as of 03:22, 28 August 2024
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	File:Master_Lock_commercial_no1_padlock.jpg		File:Master_Lock_commercial_no1_padlock.jpg
	File:cutawaym1.JPG\|A cutaway No. 1 padlock and cylinder.		File:cutawaym1.JPG\|A cutaway No. 1 padlock and cylinder.
			File:Master Lock No. 1 insides.jpg\|thumb\|alt=Master Lock No. 1 insides\|Master Lock No. 1 insides
			File:Master Lock No. 1 Pins.jpg\|thumb\|alt=Master Lock No. 1 Pins\|Master Lock No. 1 Pins
			[[File:Master Lock No. 1 Actuator (1).jpg\|thumb\|alt=Master Lock No. 1 Actuator (1)\|Master Lock No. 1 Actuator (1)]]
			[[File:Master Lock No. 1 Actuator (2).jpg\|thumb\|alt=Master Lock No. 1 Actuator (2)\|Master Lock No. 1 Actuator (2)]]
			[[File:Master Lock No. 1 Actuator (3).jpg\|thumb\|alt=Master Lock No. 1 Actuator (3)\|Master Lock No. 1 Actuator (3)]]
			[[File:Master Lock No. 1 Actuator (4).jpg\|thumb\|alt=Master Lock No. 1 Actuator (4)\|Master Lock No. 1 Actuator (4)]]
	</gallery></div>		</gallery></div>

Mgsecure: /* Master Lock No. 1 */ specs

2022-12-26T13:55:34Z

Master Lock No. 1: specs

← Older revision		Revision as of 13:55, 26 December 2022
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	\| patent =		\| patent =
	\| related =		\| related =
			\| spec_on = true
			\| spec_comptype = [[Pin_tumbler \|Pin-tumbler]]
			\| spec_comp = 4

	}}		}}

Sandplum: added category:lock models

2021-04-07T02:17:02Z

added category:lock models

← Older revision		Revision as of 02:17, 7 April 2021
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	== See also ==		== See also ==

			* [[Master Lock]]
	* [[Padlock]]		* [[Padlock]]
	* [[Pin-tumbler]]		* [[Pin-tumbler]]
	* [[Master Lock]]

			[[Category:Lock models]]
			[[Category:Master Lock]]
	[[Category:Padlocks]]		[[Category:Padlocks]]
	~~[[Category:Master Lock\|No 1]]~~
	[[Category:Pin-tumbler locks]]		[[Category:Pin-tumbler locks]]

Datagram at 15:59, 5 June 2012

2012-06-05T15:59:46Z

← Older revision		Revision as of 15:59, 5 June 2012
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	__TOC__		__TOC__
			<br clear=all>

	== Principles of operation ==		== Principles of operation ==

Datagram: Reverted edits by A1 (talk) to last revision by Datagram

2012-06-05T15:43:25Z

Reverted edits by A1 (talk) to last revision by Datagram

← Older revision		Revision as of 15:43, 5 June 2012
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	\| patent =		\| patent =
	\| related =		\| related =
	}		}}

	The '''No. 1''' is a [[pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 1 uses a laminated 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. 1''' is a [[pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 1 uses a laminated 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.

A1 at 17:51, 4 June 2012

2012-06-04T17:51:06Z

← Older revision		Revision as of 17:51, 4 June 2012
Line 11:		Line 11:
	\| patent =		\| patent =
	\| related =		\| related =
	}}		}

	The '''No. 1''' is a [[pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 1 uses a laminated 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. 1''' is a [[pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 1 uses a laminated 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.

Datagram at 19:47, 8 February 2012

2012-02-08T19:47:35Z

← Older revision		Revision as of 19:47, 8 February 2012
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	'''Notes'''		'''Notes'''
	* The No. 1 cylinder requires a small diameter plug follower.		* The No. 1 cylinder requires a small diameter plug follower.
			* The No. 1 plug is retained by a crimp, rather than a C-clip or [[cam]]. Above are the generic pin-tumbler disassembly instructions.

	== Vulnerabilities ==		== Vulnerabilities ==

Mcm151201: /* Master Lock No. 1 */

2010-11-25T22:13:33Z

Master Lock No. 1

← Older revision		Revision as of 22:13, 25 November 2010
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	}}		}}

	The '''No. 1''' is a [[pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 1 uses a laminated padlock body with an internal key-in-knob [[cylinder]]. The inner cylinder uses four pin stacks and does not use any [[security pin]]s.		The '''No. 1''' is a [[pin-tumbler]] [[padlock]] made by [[Master Lock]]. The No. 1 uses a laminated 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. 1 is one of the most common low security padlocks used in the United States.		The No. 1 is one of the most common low security padlocks used in the United States.

← Older revision		Revision as of 03:22, 28 August 2024
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	File:Master Lock No. 1 insides.jpg\|thumb\|alt=Master Lock No. 1 insides\|Master Lock No. 1 insides		File:Master Lock No. 1 insides.jpg\|thumb\|alt=Master Lock No. 1 insides\|Master Lock No. 1 insides
	File:Master Lock No. 1 Pins.jpg\|thumb\|alt=Master Lock No. 1 Pins\|Master Lock No. 1 Pins		File:Master Lock No. 1 Pins.jpg\|thumb\|alt=Master Lock No. 1 Pins\|Master Lock No. 1 Pins
	[[File:Master Lock No. 1 Actuator (1).jpg\|thumb\|alt=Master Lock No. 1 Actuator (1)\|Master Lock No. 1 Actuator (1)]]		File:Master Lock No. 1 Actuator (1).jpg\|thumb\|alt=Master Lock No. 1 Actuator (1)\|Master Lock No. 1 Actuator (1)
	[[File:Master Lock No. 1 Actuator (2).jpg\|thumb\|alt=Master Lock No. 1 Actuator (2)\|Master Lock No. 1 Actuator (2)]]		File:Master Lock No. 1 Actuator (2).jpg\|thumb\|alt=Master Lock No. 1 Actuator (2)\|Master Lock No. 1 Actuator (2)
	[[File:Master Lock No. 1 Actuator (3).jpg\|thumb\|alt=Master Lock No. 1 Actuator (3)\|Master Lock No. 1 Actuator (3)]]		File:Master Lock No. 1 Actuator (3).jpg\|thumb\|alt=Master Lock No. 1 Actuator (3)\|Master Lock No. 1 Actuator (3)
	[[File:Master Lock No. 1 Actuator (4).jpg\|thumb\|alt=Master Lock No. 1 Actuator (4)\|Master Lock No. 1 Actuator (4)]]		File:Master Lock No. 1 Actuator (4).jpg\|thumb\|alt=Master Lock No. 1 Actuator (4)\|Master Lock No. 1 Actuator (4)
	</gallery></div>		</gallery></div>