Has a #18 thread size with 5/16 in Dia.

Our straight top plate furniture hardware makes Waddell wooden table legs easy to install. The ease of installation means a Waddell straight top plate is the ideal mounting hardware for your table legs, whether you're building from scratch or restoring an old favorite. Our straight top plate provides a solid base to screw the table leg into and allows the leg to hang straight from the table to the floor.

Waddell Hanger Bolt, Thread Size: #18, Dimensions: 5/16 in Dia x 1-1/2 in L, Steel, Includes: Mounting Hardware