security-mechanisms

Asymmetric Stepped T-Pins Trapping Against Counter-Bored Plug Lips

Engineering Overview: Engineering breakdown of asymmetric T-pins (stepped driver pins) trapping in counter-bored plug chambers under lock picking.

Technical & Engineering Specifications

Material Solid Hardened H59 Brass
Pin Format Asymmetric T-Shaped Stepped Driver Pin
Anti-Attack Rating High-Grade Covert Manipulation Defense
Chamber Compatibility Counter-Bored Precision Chambers

Asymmetric Step Kinematics

T-Pins (Stepped Pins) feature an asymmetric T-shape with a narrow stem and a wide top hat shoulder ($\Phi 2.4\text{ mm}$ expanding to $\Phi 2.8\text{ mm}$).

Deep Shoulder Binding

When picked, the narrow stem drops past the shear line, causing the wide top hat shoulder to wedge firmly against a counter-bored lip inside the plug chamber.

Frequently Asked Engineering & Selection Questions

Q1: What anti-attack mechanism is detailed here?

Engineering breakdown of asymmetric T-pins (stepped driver pins) trapping in counter-bored plug chambers under lock picking.