This is the nut portion of a 1-1/2" buttress thread union. This nut has standard male buttress threads which are compatible with most standard unions.
<b>Dimensions:</b>
Outside Diameter: 2-15/16"
Flange Inside Diameter: 2-1/4"
Thread Diameter: 2-9/16" (To outside of thread) 2-3/8" (To inside of thread)
Height: 1-3/8"