TM10-3930-660-34 Figure C-4 Planetary Hub Drag Tool Item Description 1 Steel Bar Stock,  5/16 in.  X 1 in.  x 13-1/2 in. 2 Hexagon Nut,  1/2-16,  NSN 5310-01-270-173 WARNING Wear eye shields and protective gloves when drilling holes in the bar stock. Heated and flying metal parts may cause serious personal injury. 1.  Drill two 1/2 inch diameter holes in the bar stock at the locations shown in the above illustration. 2.  Remove burrs with a hand file. 3.  Center hexagon nut (2) on bar stock (1) at location shown in above illustration. 4.  Hold nut in place with a C-clamp,  and weld a single layer bead around the circumference of the nut. C-4