Broken bolt ID
#1
Member
Thread Starter
Broken bolt ID
Greetings all;
Found two identical broken bolts lying next to my truck in two different (map) locations.
Haven't been able to see anything underneath. I'm hoping one of you might recognize it.
Truck is a 2017 XLT 4WD 4DOOR. Thanks...
Found two identical broken bolts lying next to my truck in two different (map) locations.
Haven't been able to see anything underneath. I'm hoping one of you might recognize it.
Truck is a 2017 XLT 4WD 4DOOR. Thanks...
#2
Member
Thread Starter
Found it
Took 10 guys at the dealer... Tow hitch bolts. Could have been a disaster since I tow a 32' travel trailer.
They think they were overtightened at the factory.. Beware..
Last time I towed was in November. Can't figure how they fell off now. They will be replaced under warranty however I think I will put in stronger after market bolts.
They think they were overtightened at the factory.. Beware..
Last time I towed was in November. Can't figure how they fell off now. They will be replaced under warranty however I think I will put in stronger after market bolts.
#3
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Scary, what are those, 3/8" grade 8?
#4
Member
Looking at that bolt it appears it was a defect to begin with, notice the rust on certain portions. It probably cracked when installed, heat treatment went south. They use pre calibrated tools when building the truck on the line so I doubt they over torqued it.
#5
Senior Member
Looks like a metric 10 series, 10.9 I expect. That's what the bolt heads should say. Might want to make sure the bolts match the nuts. Someone may have subbed in a lesser grade at some point.
10.9's aren't that much stronger #8 farm bolt you find at tractor supply ..or what not.
10.9's aren't that much stronger #8 farm bolt you find at tractor supply ..or what not.
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#8
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Aftermarket fasteners are NOT stronger than OE or service replacements.
I'd be curious about the weight of this 32' TT (gross & tongue), and whether it was ever dragged through a pothole, or backed into something, or the LDH was set wrong.
I'd be curious about the weight of this 32' TT (gross & tongue), and whether it was ever dragged through a pothole, or backed into something, or the LDH was set wrong.
#9
Senior Member
I just slid under my '13 and it has a similar arrangement, 3 bolts per side. They are 12 mm/10.9 so a pretty stout bolt. Looking at the picture, I'd say those are 12's also.
#10
Senior Member
Guessing roughly 7500 dry with tongue at 10 % plus. Some of those LDH's aren't the greatest, don't fit correctly. The propane pan can get in the way. I've seen a few where they decided not to move the pan and fudged the LDH instead....not good. Could be anything like that.