Note:The "U" in the part number reflects product packaged in poly bag.
NPT Thread and Pipe Sizing: NPT (National Pipe Thread) is a standard used in joining pipes
and fittings that have a tapered thread. As a general rule, the
NPT inch size is the inside diameter of the threaded pipe and
is known as the NPS (Nominal Pipe Size). The outer diameter
(OD) of the pipe is shown in the table below.
(NPS) Pipe Outer Dia. (OD)
Threads per inch
Compatible Arms and Mounts
RAM® Double Socket Arm with RAM® Pin-Lock™ Security Knob