PDQ GT Series: Heavy-Duty Grade 1 Cylindrical Locks & Parts
PDQ GT Series
The PDQ GT Series is a heavy-duty Grade 1 cylindrical lock designed for high-traffic and high-abuse environments. Engineered to exceed ANSI/BHMA standards by 300%, the GT Series is factory tested to over 3 million cycles and features a staggering 2,100 in-lb lever torque resistance. With its unique "Triple Thick" leaf springs to eliminate lever sag and a 41-degree rotation for easier use, the GT Series is the preferred choice for K-12 schools, universities, and government facilities. Proudly assembled in the USA, this series is backed by an industry-leading 25-year limited warranty.
View the complete PDQ's GT Series Catalog for a full overview of available finishes, lever styles, and certified features. This comprehensive guide provides the architectural specifications and ordering information needed to select the right hardware for your project.
Download the precise PDQ GT Series Installation Template(s) for accurate door and frame preparation. These technical drawings ensure proper hole spacing and alignment for standard 161 door preps, helping installers avoid costly errors and ensuring the lock or hinge functions perfectly upon installation.
GT Series Parts
Maintain your facility’s security with authentic PDQ GT Series parts. Because the GT Series uses a specialized billet steel spindle and unique anti-rotation plates, using genuine factory parts is essential to preserving its 2,200 lbf-in torque rating. We stock a complete range of replacement latchbolts (including 3/4" fire latches), architectural strikes, and specialized tailpieces for SFIC and LFIC core integrations.
GT Series Locksets
Browse our selection of complete PDQ GT Series locksets, available in 29 different functions. This series features a heavy-duty zinc diecast chassis and a machined billet steel spindle for ultimate durability. A standout innovation is the GT135 LED Classroom Intruder, which uses a patent-pending LED indicator to confirm a door is locked without requiring staff to open it. Available in three ADA-compliant lever styles—Philadelphia, Boston, and Miami—and 7 architectural finishes.