Nemef NF2: Difference between revisions

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| lock_design = [[Pin_tumbler|Pin-tumbler]]
| lock_design = [[Pin_tumbler|Pin-tumbler]]
| patent =  
| patent =  
| years_produced =  
| years_produced =
| ratings = SKG**
| related =  
| related =  
| spec_on      =  
| spec_on      = true
| spec_comptype =  
| spec_comptype = [[Pin_tumbler|Pin-tumbler]]
| spec_comp    =  
| spec_comp    = 6
}}
}}


'''Nemef NF2''' is claimed to be the best selling security lock in the Netherlands. It should be safe against manipulation, bumping and drilling (SKG2).
The '''NF2''' '''(or 111/9)''' is a SKG**-rated [[Pin_tumbler |pin-tumbler]] lock made by [[Nemef]].  It is resistant to manipulation, [[key bumping]], and drilling.  Nemef claims the NF2 to be the best-selling security cylinder in the Netherlands.  


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== Description ==
== Principles of operation ==
The lock contains six pin stacks. Its most distinctive feature is the use of multiple diameter keypins, which together with a special warding causes the keypin tips at rest aren't at the same level. This should make bumping of the lock difficult at least. The pinstacks alternate between serrated and spooled drivers, but due to the way the keypins rest in the chambers, the spools effectively engage only when paired with three shortest keypins. All of the drivers have slightly tapered tips, which gives this lock its bad reputation among the locksporters. The warding is not very restrictive and the keyway itself is not paracentric.
 
:''See also: [[Pin_tumbler#Principles_of_operation|Pin-tumbler (Principles of operation)]]''
 
The lock contains six pin stacks. Its most distinctive feature is the use of multiple diameter keypins, which together with a special warding causes the key pin tips at rest aren't at the same level (sometimes referred to as "shadow drilling"). These features provide additional resistance to [[key bumping]] attacks. The pin stacks alternate between serrated and spooled drivers, but due to the way the key pins rest in the chambers, the spools effectively engage only when paired with three shortest key pins. All of the drivers have slightly tapered tips. The warding is not very restrictive and the keyway itself is not paracentric.
 
== Disassembly instructions ==


== Dissassembly instructions ==
To disassemble a double euro cylinder, use of a pinning shoe is the preferred method.
To disassemble a double euro cylinder, use of a pinning shoe is the preferred method.


Other possibility is to use a segmented follower, but that requires that both cores are pulled out a bit to allow a cam removal. Then a core should be rotated to approximately 4:30 or 7:30 o'clock position (135 degrees either clockwise or anti-clockwise) to prevent driver entering a gaps for the cam clutch. Then a segmented follower can be used to remove the core.
Other possibility is to use a [[Plug_follower |segmented follower]], but that requires that both cores are pulled out a bit to allow a cam removal. Then a core should be rotated to approximately 4:30 or 7:30 o'clock position (135 degrees either clockwise or anti-clockwise) to prevent driver entering a gaps for the cam clutch. Then a segmented follower can be used to remove the core.


== Vulnerabilities ==
== Vulnerabilities ==
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* [[Lockpicking]]
* [[Lockpicking]]
* [[Decoding]]
* [[Decoding]]
* [[Key bumping]]?
* [[Key bumping]]
* [[Impressioning]]
* [[Impressioning]]


== Gallery ==
== Gallery ==
<div align="center"><gallery>
<div align="center"><gallery>
File:Nemef NF2 key least.png|Nemef NF2 key.
File:Nemef NF2 key least.png |Nemef NF2 keys.
File:Nemef NF2 keyway least.png|Nemef NF2 keyway detail.
File:Nemef NF2 keyway least.png|Nemef NF2 keyway detail.
File:Nemef NF2 pins least.png|Nemef NF2 pins detail.
File:Nemef NF2 pins least.png|Nemef NF2 pins detail.
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* [https://www.youtube.com/watch?v=0CmCtI7-CWc&t=392s Artichoke2000's Nemef NF2 analysis]
* [https://www.youtube.com/watch?v=0CmCtI7-CWc&t=392s Artichoke2000's Nemef NF2 analysis]


[[Category:Lock models]]
[[Category:Nemef]]
[[Category:Nemef]]
[[Category:Lock models]]
[[Category:Pin-tumbler locks]]
[[Category:Pin-tumbler locks]]
[[Category:SKG locks]]

Latest revision as of 22:10, 25 December 2022

Nemef NF2

Nemef NF2
Nemef NF2 least.png
Name Nemef NF2
Manufacturer Nemef
Lock Type Cylinder
Lock Design Pin-tumbler
Security Rating(s) SKG**
Specifications
# of Components 6
Component Type Pin-tumbler


The NF2 (or 111/9) is a SKG**-rated pin-tumbler lock made by Nemef. It is resistant to manipulation, key bumping, and drilling. Nemef claims the NF2 to be the best-selling security cylinder in the Netherlands.


Principles of operation

See also: Pin-tumbler (Principles of operation)

The lock contains six pin stacks. Its most distinctive feature is the use of multiple diameter keypins, which together with a special warding causes the key pin tips at rest aren't at the same level (sometimes referred to as "shadow drilling"). These features provide additional resistance to key bumping attacks. The pin stacks alternate between serrated and spooled drivers, but due to the way the key pins rest in the chambers, the spools effectively engage only when paired with three shortest key pins. All of the drivers have slightly tapered tips. The warding is not very restrictive and the keyway itself is not paracentric.

Disassembly instructions

To disassemble a double euro cylinder, use of a pinning shoe is the preferred method.

Other possibility is to use a segmented follower, but that requires that both cores are pulled out a bit to allow a cam removal. Then a core should be rotated to approximately 4:30 or 7:30 o'clock position (135 degrees either clockwise or anti-clockwise) to prevent driver entering a gaps for the cam clutch. Then a segmented follower can be used to remove the core.

Vulnerabilities

The Nemef NF2 is vulnerable to one or more of the following:

Gallery


References


See also