Diameter: 7/16"
Length: 1-1/4"
Material: Steel
Finish: Zinc
Driver Type: 9/16" Wrench
Thread Size: 20 (Fine)
Style: Hex
Type: Coupling Nut
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.