The Locksmith ShopCall (813) 832-4777
Cutaway of a door lock cylinder with its key inserted. Brass pins, steel springs and the brass plug are visible inside.

How We Unlock Doors

A look inside the lock on your front door.

Use the arrow keys, click, or swipe to move through the slides.

The same lock cut in half with no key: each stack of pins crosses the line between the plug and the housing.

Inside a pin-tumbler lock

This is the design inside many everyday door locks. A brass plug sits in the housing, and stacks of small pins cross the gap between the two. Springs keep every stack pressed down.

That gap is the shear line. While any pin crosses it, the plug can’t turn.

  • Housing
  • Springs
  • Driver pins
  • Shear line
  • Key pins
  • Plug
Before: with no key in the lock, the pin stacks cross the shear line and the plug cannot turn. The matching key is fully inserted. Every gap between the pins sits exactly on the shear line.

The right key lines every pin up at the shear line

Slide in the matching key and each stack rises by just the right amount, so every gap lands on the line. With nothing crossing it, the plug is free to turn.

  • Shear line
  • Each cut is a set depth

Watch the lock open

  1. 1The key slides in
  2. 2Every pin meets the shear line
  3. 3The plug turns and lifts the bolt
  4. 4The door is free to open
A dark front door with a brass lever handle and deadbolt, intact and undamaged.

Non-destructive entry: we open the lock, not break the door

Knowing how the pins work lets us work with the lock instead of forcing it. The aim is simple: your door, frame and finish stay the way they were.

The brass plug lifted out of the lock, with its five key pins raised above it and the key in the plug.

Then we can rekey or make new keys on the spot

Rekeying swaps the key pins for a new set of lengths. Old keys stop working, and the lock stays on your door.

Need spares? We cut new keys to match.

  • Key pins
The lock after the key has turned: the plug has rotated and the bolt has lifted clear of the strike.

Precision, not force

That’s how we unlock doors: understand the lock, open it cleanly, and leave you with keys that work.

Locked out, need a rekey, or need new keys? The Locksmith Shop, 4556 S Manhattan Ave, Tampa.

Call (813) 832-4777