Medeco M4: Difference between revisions
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|maker = [[Medeco]] | |maker = [[Medeco]] | ||
|lock_type = [[Cylinder]] | |lock_type = [[Cylinder]] | ||
|lock_design = [[Pin-tumbler]], [[Sidebar]] | |lock_design = [[Pin_tumbler |Pin-tumbler]], [[Sidebar]] | ||
|years_produced = 2021 - Present | |years_produced = 2021 - Present | ||
|patent = Expires 2040 | |patent = Expires 2040 | ||
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}} | }} | ||
The '''M4''' (or '''M<sub>4</sub>''') is a [[UL 437]] rated [[Pin_tumbler|pin-tumbler]] lock made by [[Medeco]]. The pin tumblers use [[axial rotation]] to interface with a [[sidebar]] located at 3 o'clock in the [[plug]]. It also features four spring biased [[Side_pin|side pins]] that restrict movement of the sidebar until properly positioned. One of the side pins is lifted by the Shuttle Pin movable element in the key. The M4 is easily identified by the "M<sub>4</sub>" logo to the left of the keyway. | The '''M4''' (or '''M<sub>4</sub>''') is a [[UL 437]]-rated [[Pin_tumbler|pin-tumbler]] lock made by [[Medeco]]. The pin tumblers use [[axial rotation]] to interface with a [[sidebar]] located at 3 o'clock in the [[plug]]. It also features four spring biased [[Side_pin|side pins]] that restrict movement of the sidebar until properly positioned. One of the side pins is lifted by the Shuttle Pin movable element in the key. The M4 is easily identified by the "M<sub>4</sub>" logo to the left of the keyway. | ||
It is called the M4 because it is the forth generation of Medeco's axial rotation system, following the [[Medeco Original]], [[Medeco Biaxial]], and [[Medeco M3]] designs. | It is called the M4 because it is the forth generation of Medeco's axial rotation system, following the [[Medeco Original]], [[Medeco Biaxial]], and [[Medeco M3]] designs. | ||
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== Principles of operation == | == Principles of operation == | ||
:''See also [[Medeco Biaxial#Principles_of_operation|Medeco Biaxial (Principles of | :''See also [[Medeco Biaxial#Principles_of_operation|Medeco Biaxial (Principles of operation)]]'' | ||
The M4 uses five or six pin-tumblers that provide axial rotation to interface with a sidebar. It uses standard, [[Security_pins|mushroom]], and barrel drivers. | The M4 uses five or six pin-tumblers that provide axial rotation to interface with a sidebar. It uses standard, [[Security_pins|mushroom]], and barrel drivers. | ||
The M4 sidebar differs from previous models because it has small grooves cut out where the side pins fit into. Once side pins are properly lifted by the correct side bitting and shuttle pin on the key, | The M4 sidebar differs from previous models because it has small grooves cut out where the side pins fit into. Once side pins are properly lifted by the correct side bitting and shuttle pin on the key, and pin tumblers are properly rotated by the correct key, the sidebar legs can interface with the gates on each pin-tumbler. | ||
The M4 side pins are spring-biased components located to the left of the sidebar. In their default state, the side pins block the sidebar from retracting. A | The M4 side pins are spring-biased components located to the left of the sidebar. In their default state, the side pins block the sidebar from retracting. A moveable element on the right side of the key lifts the single Lift Pin into the correct position. Side milling on the key moves the three Finger Pins into the correct position. There are three different Finger Pins, with true gates at different heights, and false gates. | ||
<div align="center"><gallery> | <div align="center"><gallery> | ||
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'''Notes''' | '''Notes''' | ||
* Original, Biaxial, and M3 sidebars are ''not'' compatible with the M4. | * Original, Biaxial, and M3 sidebars are ''not'' compatible with the M4. | ||
== Disassembly instructions == | == Disassembly instructions == | ||
Add to me! | Add to me! | ||
== Vulnerabilities == | == Vulnerabilities == | ||
The M4 is thought to be an improvement to the M3, allowing for enhanced key control and pick resistance. Research by the [[locksport]] community has shown a picking attack is possible. | The M4 is thought to be an improvement to the M3, allowing for enhanced key control and pick resistance. Research by the [[locksport]] community has shown a picking attack is possible. | ||
== Gallery == | == Gallery == | ||
<div align="center"><gallery> | <div align="center"><gallery> | ||
File:Medeco_M4_sidebar_side_view-Septclues.jpg | |||
File:Medeco_M4_sidebar-Septclues.jpg | |||
File:Medeco_M4_plug_rear_view-Septclues.jpg | |||
</gallery></div> | |||
== References == | == References == | ||
<references /> | <references /> | ||
== See also == | == See also == | ||
* [[Medeco]] | * [[Medeco]] | ||
* [[Pin-tumbler]] | * [[Pin_tumbler |Pin-tumbler]] | ||
* [[Sidebar]] | * [[Sidebar]] | ||
* [[Axial rotation]] | * [[Axial rotation]] | ||
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{{Stub}} | {{Stub}} | ||
[[Category:Lock models]] | |||
[[Category:Axial rotation]] | [[Category:Axial rotation]] | ||
[[Category:Medeco]] | [[Category:Medeco]] | ||
[[Category:Pin-tumbler locks]] | [[Category:Pin-tumbler locks]] | ||
[[Category:Sidebar locks]] | [[Category:Sidebar locks]] | ||
[[Category:UL 437 locks]] | [[Category:UL 437 locks]] | ||
Revision as of 22:22, 1 January 2023
Medeco M4
| Medeco M4 | |
 | |
| Name | Medeco M4 |
|---|---|
| Manufacturer | Medeco |
| Lock Type | Cylinder |
| Lock Design | Pin-tumbler, Sidebar |
| Year(s) Produced | 2021 - Present |
| Patent | Expires 2040 |
| Related Locks | |
| Medeco Original Medeco Biaxial Medeco Bilevel Medeco M3 | |
The M4 (or M4) is a UL 437-rated pin-tumbler lock made by Medeco. The pin tumblers use axial rotation to interface with a sidebar located at 3 o'clock in the plug. It also features four spring biased side pins that restrict movement of the sidebar until properly positioned. One of the side pins is lifted by the Shuttle Pin movable element in the key. The M4 is easily identified by the "M4" logo to the left of the keyway.
It is called the M4 because it is the forth generation of Medeco's axial rotation system, following the Medeco Original, Medeco Biaxial, and Medeco M3 designs.
Principles of operation
The M4 uses five or six pin-tumblers that provide axial rotation to interface with a sidebar. It uses standard, mushroom, and barrel drivers.
The M4 sidebar differs from previous models because it has small grooves cut out where the side pins fit into. Once side pins are properly lifted by the correct side bitting and shuttle pin on the key, and pin tumblers are properly rotated by the correct key, the sidebar legs can interface with the gates on each pin-tumbler.
The M4 side pins are spring-biased components located to the left of the sidebar. In their default state, the side pins block the sidebar from retracting. A moveable element on the right side of the key lifts the single Lift Pin into the correct position. Side milling on the key moves the three Finger Pins into the correct position. There are three different Finger Pins, with true gates at different heights, and false gates.
Notes
- Original, Biaxial, and M3 sidebars are not compatible with the M4.
Disassembly instructions
Add to me!
Vulnerabilities
The M4 is thought to be an improvement to the M3, allowing for enhanced key control and pick resistance. Research by the locksport community has shown a picking attack is possible.
Gallery
References
See also
 |
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