"Z"-type table top fasteners fit in a continuous groove in the inside of your table apron and secure the top with a #8 Pan head screw. Before assembly, mill an 1/8" wide 3/8" deep groove 3/8" from the top of the apron. Since the "Z" clip floats in the groove, it allows for seasonal movement of the top. Clips are 1-1/4" Long x 3/4" wide with a 3/8" offset and 3/4" long leg. Steel. Pack of 12