9/16"-12 tpi Coarse Hex-Drive Rethreading tap from 410 /per Qty. Sold Out This item is currently on backorder, but you can still purchase it now and we'll ship as soon as more become available. 9/16" diameter NC-USS (12 threads per inch) hex thread-restoring tap (2-1/16" long) You can use a 5/8" wrench or socket to run rethreading tap into threaded hole Rethreading tap will not crosscut or undercut the thread the way a cutting tap will Silver zinc–plated MADE IN USA SKU:TC6