![1675 - 5/8" Digging Bar Jam Nut for Ground Hog Inc T-4 Trencher](http://workhorseeq.com/cdn/shop/products/289-image_{width}x.jpg?v=1610564681)
Part Number: 1675
This is the lock nut for the large adjustment screw on the side of the digging bar that is used to adjust the digging chain tension.Note: When ordering a Digging Bar or Digging Bar assembly, this part, along with the adjustment screw, is included.