Nominal Size: 7/8"
Thread: 9 TPI (Coarse)
Width Across Flats: 1-1/4"
Length: 2-1/2"
Material: Steel
Finish: Hot Dip Galvanized
Style: Inspection Hole
Type: Coupling Nut
Box of 3.
A coupling nut is a long nut tapped from each side to meet in the middle, rather than all the way through in the same direction, used to connect two threaded rods end to end.