View source for ALPHA FB

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{{Lock model
| name 			= ALPHA FB
| Img 			= File:Alpha_FB_Face.jpeg
| Img_size 		= 200
| maker 		= [[ALPHA]]
| lock_type 	= [[Cylinder]]
| lock_design 	= [[Pin_tumbler|Pin-tumbler]], [[Dimple]]
| spec_on       = true
| spec_comptype = [[Pin_tumbler|Pin-tumbler]]
| spec_comp     = up to 20
| ratings		= 
| patent		= 
| related		= 
}}
The '''FB''' is a [[dimple]] lock made by the Japanese manufacturer [[ALPHA]]. It contains up to 20 [[Pin_tumbler|pin-tumbler]] stacks. Pins are arranged in four rows to the left side of the keyway, the right side as well as two diagonal rows at 10 o'clock and 2 o'clock.
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== Principles of operation ==

The [[ALPHA]] FB utilizes [[dimple]] keys but functions the same as a standard [[Pin_tumbler |pin-tumbler]] lock. The key is bitted on the sides and edges of the blade and is reversible. To open the lock, all active pin-tumblers -- across all four rows of pins -- must be aligned at the [[shear line]]. ''(See also [[Pin_tumbler#Principles_of_operation|Pin-tumbler, Principles of operation]])''.

The lock contains up to 20 pin-tumbler stacks. ALPHA utilizes a variety of [[security pin]]s to deter picking. The FB uses a combination of tapered mushroom spools and standard driver pins which are all cupped to allow the spring to nest inside the pins. Key pins are multi-section tapered spools. Two pin stacks use interactive elements and feature different pin types and springs. In addition, there is over-milling in the core.

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== See also ==

* [[ALPHA]]
* [[Dimple|Dimple locks]]
* [[:Category:Lock_models|List of lock model articles]]

[[Category:Lock models]]
[[Category:ALPHA]]
[[Category:Dimple_locks]]
[[Category:Pin-tumbler_locks]]

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