Carbon Steel 8" Flange with National Pipe Tapered (NPT) Pick One Side_2 1/2 inch This thread is NOT the S5M25 Model:3117 (6.0 TPI x 3.062 OD) Program Issued Threads_NYFD x NYFD

This thread is NOT the same thread as the thread known as NYFD or FDNY thread

Brass has a stain finish and features a large one piece rubber bumper with molded teeth and a knurled base for easy secure grip

Female 1 1/2 NPSH

San Francisco and some other locations use a different thread type or size

thread and couplings in use by fire departments today is double jacket hose with aluminum NH / NST

Carbon Steel 8" Flange with National Pipe Tapered (NPT) Pick One Side_2 1 2 inch This thread is NOT the S5M25 Model:3117 (6.0 TPI x 3.062 OD) Program Issued Threads_NYFD x NYFD This thread is NOT the same thread as the thread known as NYFD or FDNY thread Brass has a stain finish and features a large one piece rubber bumper with molded teeth and a knurled base for easy secure grip