FAB 2**/3***

=FAB 2** Profi and 3***=

FAB 2** Profi and FAB 3*** are two pin-tumbler locks from FAB. FAB 2** Profi belongs to a resistance class 2, FAB 3*** belongs to resistance class 3. These locks are closely related to the FAB 3*** Profi, with the exception of being five pin locks only.

Principles of operation

 * See also: Pin-Tumbler (Principles of Operation)

Both locks are pretty much identical, with the exception of anti-drilling inserts - FAB 2** has no anti-drill elements. Also FAB 3*** comes with the identification card, which is only a convenience, because blanks for both are freely available. Both locks have six pin chambers, but the first chamber is left empty. Other than that, everything is identical to the FAB 3*** Profi.

Disassembly instructions
The core has two groves for the cam clutch at 3 and 9'o clock positions, that would allow driver to jump out before the follower would hold it. Pinning shoe can be handy, although you have to count with the stronger springs and smaller pin diameter. Segmented follower can be used for the double euro format too.

Vulnerabilities
The FAB 2** Profi/3*** are vulnerable to one or more of the following:


 * Lockpicking
 * Decoding
 * Key bumping - when RBC pin is worked around
 * Impressioning