When seconds matter, firefighters need tools they can count on. The Knox FDC Key Wrench is the essential, fire department-controlled tool required to quickly access every Knox locking FDC cap in your jurisdiction — giving your crew fast, reliable entry to fire sprinkler and standpipe systems the moment they arrive on scene.

The Knox FDC Wrench is common to all Knox FDC, Storz, and Standpipe Locking Caps in every jurisdiction and is required to unlock and remove caps. Whether your crew is responding to a high-rise, a commercial warehouse, or a parking garage standpipe, a single Knox FDC Key Wrench opens every Knox-protected connection — no guesswork, no delays.

The Knox FDC Spanner Wrench is a pocket-sized multipurpose tool that can quickly unlock and lock the Knox FDC, Standpipe, and Storz Locks. It is equipped with the same key firefighters use and can also be used to pry open doors and windows, open and close gas valves, and more. Compact enough to fit in turnout gear, the wrench combines several traditional firefighter hand tools into one durable, easy-to-carry solution — reducing the number of tools your crew needs to bring on scene.

Fire personnel properly equipped with a Knox FDC Wrench can quickly remove the lock. In the event of debris or ice buildup on the locking bolt head, a small flathead screwdriver or similar tool will quickly remove any foreign matter. Additionally, if a locking bolt is fully loosened but the cap won't release, the spanner end of the wrench engages the pins on the face of the Knox FDC Lock to unscrew it — giving firefighters a reliable backup method under any conditions.

When a fire department adopts the Knox FDC Protection Program, Knox Keywrenches are provided to the department at no charge. An authorized signature is required to order FDC Wrenches and receive program notifications. Should a wrench become misplaced, damaged, or destroyed, a replacement can be requested by contacting Knox Customer Service. This ensures full accountability — only authorized fire department personnel carry the wrench, preventing unauthorized removal of FDC locking caps.

Knox provides a variety of solutions for over 14,000 fire departments and governmental agencies throughout the U.S. Because every Knox FDC Wrench operates every Knox locking cap in every jurisdiction nationwide, mutual aid departments arriving from outside your area can respond just as effectively — no compatibility issues, no wasted time.

SKU: P/N 3101 Compatible With: Knox FDC Locks (1½" & 2½" NH/NST), Knox Standpipe Locks, Knox Storz Locks.

Note: The Knox FDC Key Wrench is a fire department-controlled security tool. Wrenches are issued directly to enrolled fire departments and authorized agencies. Contact your Knox Territory Sales Manager or Knox Customer Service to enroll your department or request replacement wrenches.