FAB 3***/4****
FAB 3*** Profi and 4****
| FAB 3*** Profi/4**** | |
 | |
| Name | FAB 3*** Profi/4**** |
|---|---|
| Manufacturer | Fab |
| Lock Type | Cylinder |
| Lock Design | Pin-tumbler |
| Year(s) Produced | 2021 - |
| Patent | EP3219882B1, EP3306017B1 |
FAB 3*** Profi and FAB 4**** are two new locks from FAB; FAB 3*** Profi belongs to a resistance class 3, FAB 4**** belongs to resistance class 4. These locks differ quite significantly from the previous FAB's products - both of them are six pin locks, they have a new key shoulder and shoulder stop, new pins, different cam clutch and more...
Description
Both locks are quite similar - FAB 4**** just seem to be using different keyway, core contains six more antidrill inserts and by default it contains a cam clutch allowing unlocking even when a key is inserted from the other side. Both locks are have six pin chambers, equipped with a new style pins - both keypins and drivers are thinner than in previous generations of FAB locks, keypins have even slimmer tops (no reason for that mentioned in patents or documentation). Driver pins seem to be reworked too and the thinner spools don't cause much counter-rotation, when a false set is achieved, adding to the improved picking resistance. Also springs are different and quite a bit stronger than in previous locks.
Pinning "structure" is also different compared to older top models - there is only sigle RBC pin, two spools and the rest are standard drivers (one brass, two steel ones in the back). The behavior of the lock changed too - the standard driver behavior is similar to the old bevelled/tapered ones FAB used long ago, which combined with the spools and the RBC improve the picking resistance further.
Key is also very different, and it contains interesting feature (patented) - the key shoulder has a shape that interfaces with a groove in the core. This shape can be used for master-keying purposes, as detailed in the EP3219882B1 patent.
Also the core clutch used in FAB 3*** Profi is completely different - it has no moveable parts and uses a groove milled in the core to function.
Dissassembly instructions
Vulnerabilities
The FAB 3*** Profi/4**** are vulnerable to one or more of the following:
- Lockpicking
- Decoding
- Key bumping - when sliders and RBC pin is worked around
- Impressioning
Gallery
FAB 3*** Profi front view.
FAB 3*** Profi keys.
FAB 3*** Profi keyway detail.
FAB 3*** Profi core bottom view.
FAB 3*** Profi pins detail.
FAB 3*** Profi pins on the right compared to "classical" FAB pins on the left.
FAB 3*** Profi bottom of the bible view.
FAB 3*** Profi cam clutch.
FAB 3*** Profi security card - note the number no longer corresponds with the bitting.
FAB 4**** front view.
FAB 4**** keys.
FAB 4**** keyway detail.
FAB 4**** core bottom view - note the six additional inserts.
FAB 4**** pins detail.
FAB 4**** bottom of the bible view.
FAB 4**** security card.
References
