RAM Single Socket Arm & 1/4" NPT Female Thread for 1" Balls
The single socket for a B size 1” ball that has a socket for Octagon Button products. This configuration gives you the ability to interface with the variety of Octagon Button bases, couplers, and pipe mounts.
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:
NPT Size (NPS)
Pipe Outer Dia. (OD)
Threads per inch
Material: Powder Coated Marine Grade Aluminium
Ball: B size 1" rubber
The "U" in the part number reflects product packaged in poly bag.