Knox Box FDC Lock 2 1/2" NH/NST Male Locking Cap (Swivel-Guard) Model:3153 (6.0 TPI x 3.062 OD) 3 inch NH / NST

3 inch NH / NST fittings measure approximately 3 5/8"

Type "B" polypropylene 1 1/2 inch female camlock (Cam & Groove) coupler to 1 1/2 inch male NPT threads

The female threaded side of this adapter will only connect to a 2 inch male National Pipe Tapered (NPT) thread

Designed to interchange with all products produced to MIL-C-27487F

Our 2 inch Made in the USA fire hose is manufactured to this specification shall meet and exceed all performance requirements of NFPA 1961 and Underwriter’s Laboratories standards

Knox Box FDC Lock 2 1/2" NH/NST Male Locking Cap (Swivel-Guard) Model:3153 (6.0 TPI x 3.062 OD) 3 inch NH / NSTKnox FDC Locks protect fire department connections (FDCs), keeping pipes clean of debris to ensure the delivery of high pressure water flow to fire sprinkler systems. Swivel Guard versions also enhance security against vandalism. Operated with Knox Keywrench. Ensures ready and reliable connections to fire sprinkler systems FDC Swivel Guard brings added protection against vandalism Protects check valves from freezing in cold climate areas Eliminates