Nominal Size: 3/4"
Thread: 10 TPI (Coarse)
Width Across Flats: 1-1/8"
Length: 2-1/4"
Material: Steel
Finish: Hot Dip Galvanized
Style: Inspection Hole
Type: Coupling Nut
Box of 10.
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.