3/4"-10 x 2" Zinc Plated Steel Coarse Thread Inspection Hole Coupling Nuts

Diameter: 3/4"
Length: 2"
Material: Steel
Finish: Zinc
Driver Type: 1" Wrench
Thread Size: 10 (Coarse)
Style: Inspection Hole and Stop
Type: Coupling Nut

Box of 15.

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.