Zinc plated Steel Nut for Spindles 3/8-Inch 20-TPI

Hexagonal screw for optional use with doorknob spindles. Intended for use with split spindles in doors that have a knob from only one side. By tightening the nut against the door lock’s hub, it helps set the spindle in the lock. Made of steel and zinc plated.

Dimensions: 5/8" D x 3/16" thick
Thread: 3/8" - 20 TPI

Most vintage home hardware falls into one major era of the last few centuries: Colonial, Federal, Victorian, Arts & Crafts, and Modern.