I need to raise my hitch and lower my pinbox. Height is perfect now but need to get the hitch head up higher so my Bedsaver will also be higher, and pinbox will not hit tailgate if pinbox slides off onto the Bedsaver.
Question is, what should I torque rating on the pinbox bolts? Any reason to upgrade the bolts to grade 8?
I went to a grade 8 when I went with the Demco pin box they had me torque them to 110
what size bolts did you use? Did the Demco come with grade 5 and you just upgraded? I sure see no downside of going with grade 8 but the charts show 5/8" rating at 220 ft lbs. I don't have a torque wrench that will go that high.
Also, I've never heard of anyone shearing a grade 5 bolt in a pinbox. Edited by: pulpwood007
Just upgraded when I put the new pin box on. I have also never hears of the bolts shearing out of the pin box. 110 lbs is enough. used the same size bolts as came in it. The holes showed no sign of wear
Frank and Janet Henn
2017 380MBH pushing a 2007 Dodge
CDT with a six speed Automatic
Traveling with Hoover and Rainbow the wonder dogs and now with Sunshine the rescue Schnauzer.
When I upgraded my pin box to a MorRyde, I used the same bolts as were in the old one. Grade 5. There was absolutely no wear on them. It's not a real convenient place to get wrenches, so I used a drop of loktite on each bolt and tightened them up with an 2 ft. breaker bar. Had to get an open end inside to hold it from turning.
2008 Cruiser CF26RK
2013 Ford Eco-Boost
Heavy duty payload - Max tow
The recommended torque rating for a specific size and grade of a bolt can be found on the Internet -- when I moved my pin box I inspected each bolt/nut and replaced any that didn't look almost new......I did however, replace all the split lock washers with new.Edited by: efavilajr
First I do not know what the recommended torque value for the pin box is, the manufacturer would give that. All that being said remember that the torque values in the charts are the recommended maximum torque for a given bolt. The material being held will also have a max (aluminum and cast Iron will be lower than steel) and the operation of a device or assembly may have different requirements than the bolt. In this case it may be a factor of deformation that could lower the required value. As I said at the begininng check with the manufacturer first. Edited by: Chrisnan23