I have a new Reese 2" trailer coupler that I will be installing on the trailer I'm refurbishing. I will also add a coupler handle. The items were purchased separately. When I went to find grade 5 or grade 8 bolts in size 1/2-13 I could only find 4" or 5". With the coupler handle the 4" is too short and the 5" is too long. I then went to Northern Tool because I remember seeing a Reese 2" coupler with the coupler handle already attached. I measured the bolt that was included and it was a 4 1/2" grade 5. I checked Lowes, Home Depot and Tractor Supply. Any suggestions?