7/8"-9 x 2-1/2" Hot Dip Galvanized Steel Coarse Thread Inspection Hole Coupling Nuts

Diameter: 7/8"
Length: 2-1/2"
Material: Steel
Finish: Hot Dip Galvanized
Driver Type: 1-1/4" Wrench
Thread Size: 9 (Coarse)
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.