How to Lock Pick an American 1100 Series

First, you’ll need basic lockpicking tools: a tension wrench and a pick (a hook pick works well for this lock). You can check out our carbon fiber special set or the trainee 2.0 which are both capable of opening this lock. The American 1100 typically has 5 or 6 pins, often with serrated key pins and sometimes serrated or spool driver pins, which add resistance to picking. Start by inserting the tension wrench into the top of the keyway (TOK tensioning is preferred over bottom-of-keyway because it provides better feedback and control with this lock). Apply light, consistent pressure in the direction the lock turns—usually clockwise.

Next, use the pick to feel each pin, starting from the back of the lock. The serrated pins will give false sets, meaning they’ll click and feel like they’re set but won’t actually be at the shear line yet. Move through the pins one by one, applying gentle upward pressure until you feel a distinct click or movement. The key is patience—serrated pins require you to work through multiple false settings before reaching the true set point. If a pin feels stuck or mushy, ease off the tension slightly; too much tension can bind the pins and make it harder to set them.

A useful technique is to pulse the tension—briefly increase it after each pin sets—to test if the lock is ready to turn. The 1100’s strong shackle spring can mask when it’s fully picked, so this helps confirm you’ve got it. If you’re new to this lock, practice with the shackle open first to reduce spring tension and get a feel for the pins without as much resistance.

The American 1100 varies in difficulty—some have more serrated pins or tighter tolerances than others—so don’t get discouraged if it takes time. Progressive pinning (starting with one pin and adding more as you master it) is a great way to learn the feel of this lock. Keep your touch light, listen for crisp clicks, and adjust tension as needed. With practice, it becomes a satisfying challenge to crack.