CS Lock 4" Standard Threaded Door Knob Spindle. Threaded Spindle.

This sturdy spindle is designed to facilitate new or vintage doorknobs with threaded shanks of 20 TPI. Constructed of hardened steel, it provides smooth operation and long-lasting wear. With a 4" length, it's ideal for standard doors. Features a 9/32" thickness. Dimensions: 4" L x 9/32" thick. 20 TPI.