This metric screw is used with the extra-capacity kit. Three of these screws attach the two flanges and the drum spacer together. They will require a M5 metric hex key wrench for tightening, such as our item #4003 hex wrench.
NOTE: If you're buying these to replace the screws for the TRITON model GH168-WG or for any model sold prior to May 2012, you'll also need the M6 metric nut (Item # 4015) to match up with it, as all Rapid Reel models sold prior to May 2012 came equipped with 1/4" threaded screws and nuts. If you simply want to purchase a replacement screw at a local hardware store, a 1/4"-20 x 4-3/4" screw with any type of head (Phillips, hex, socket, etc.) will suffice.