New to the forum and desperate for help finding a bolt. My AC compressor locked up so of course it broke the belt. When installing new belt, i was loosening the pivot bolt on the belt tensioner and at about 1/4" turn the head snapped off. Still have not attempted to get old broken bolt out but will. Any idea what size bolt this is? I have looked high and low on the internet with no luck.
Bolt Size Help!
- Thread starter JL1034
- Start date
I messed with mine the other day and I am actually missing a bolt on the backside and need to get a new one. The one on the front should be the same two on the back side. I would take one of those and get a match with washer at a nearby Napa store or parts store. I am not sure if you need a grade 8, but I would get a grade 8 anyways. I can double check the size of the front one for you later this evening to make sure it does indeed match the rear two.
Wrong about the front be the same as the rear two.
The front is the smaller one.
Mine could also not be stock. Idk, but they do the job.
The front is the smaller one.
Mine could also not be stock. Idk, but they do the job.
Front bolt:
13mm head
8mm thread (5/16" seems to work more exact, but if it is a metric head I would stick with a metric thread.)
About 25mm length
13mm head
8mm thread (5/16" seems to work more exact, but if it is a metric head I would stick with a metric thread.)
About 25mm length
Ah shoot. You are talking about the bolts that loosen the belt. I will check those tomorrow. Disregard my previous posts. What I sent you was for the bolt that is missing in your picture.
My handy dandy string of bolt/nut thread testers tells me it’s an M8-1.25. I measured it to be an inch long so probably 25MM, which lines up with Doop’s picture above.
I would look for M8-1.25x25, or shorter. I would search for captive washer style bolts which is what this is (means washer is stuck on the bolt between head and threads, like the factory is). So an M8-1.25x25 captive washer bolt.
I would look for M8-1.25x25, or shorter. I would search for captive washer style bolts which is what this is (means washer is stuck on the bolt between head and threads, like the factory is). So an M8-1.25x25 captive washer bolt.
And if interested in the thread tester, you can find it here.
I can’t believe I waited through 7 years of Jeep owning to get one. I never knew they existed for the longest time. Just in one year it’s been extremely handy, so I highly recommend. Probably wouldn’t help you with the broken bolt situation, but still a good tool regardless.
edit: apparently links to amazon don’t work. I think I’ve learned that before but forgot again. Just search “thread checker” and look at the Amazon’s choice listing. $28.
I can’t believe I waited through 7 years of Jeep owning to get one. I never knew they existed for the longest time. Just in one year it’s been extremely handy, so I highly recommend. Probably wouldn’t help you with the broken bolt situation, but still a good tool regardless.
edit: apparently links to amazon don’t work. I think I’ve learned that before but forgot again. Just search “thread checker” and look at the Amazon’s choice listing. $28.
That is awesome! Thanks for the share.
And yes the bolt also measured a hair longer than an inch.
It is an awesome tool for sure. I kind of want to improve upon it though. It's on a hard fixed cable that can't be taken apart. I need be ab le to take the fittings off so I can freely install them. It's really difficult to test a hole in a tight spot on the jeep if I have to drag the cable and all the other fittings while I try them out on a hole. Especially because I have to spin the whole cable as I spin the fitting. I need a quick way that I can put like a cable lock on one end, and quickly remove by unthreading a thumb screw or something. The only downside then is taking all the fittings to get to the one you want, then putting them all back on in order. It would be nice if instead, the fittings could unclip themselves from the cable, and then clip back on in the right spot.
Yeah an inch is 25.4mm so it's somewhere between and inch and 25MM. I tried looking in the Mopar parts manual but didn't find it. But anything from 15-25mm would be fine I'm sure. That bolt really does not do much in the grand scheme.
All my years of wrenching pumps, vehicles etc,etc Ive never seen a "thread tester" Very handy! It gets pretty frustrating when a vehicle is 50/50 metric and SAE. Gotta say Macho, you have the bases covered here and thanks for sharing what you know.
Been bending wrenches since I was 11, and I've never seen them, ordering mine today.
I've got the old thread gauges, what a PITA those are.
Macho DOES do his homework!
I've got the old thread gauges, what a PITA those are.
Macho DOES do his homework!
Thanks sir, I'm glad I can share something that others appreciate. I am an overthinker and basically anything I spew here definitely at least has some sort of research or gathered knowledge behind it because I don't make even the simplest of decisions for myself until I've thought way too long and hard about it.
Also, I never heard of the thread tester either until a year ago. One of my buddies told me about it so I had to order.
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Spew away brother!
You've taught an old Jeeper a thing or two about these newer mochines.
You've taught an old Jeeper a thing or two about these newer mochines.
Got my thread checkers from Summit a few days ago.
I immediately knew the cable had to go, gone before I even got them home.
Couple little boxes to sort them into, Bingo.
I immediately knew the cable had to go, gone before I even got them home.
Couple little boxes to sort them into, Bingo.
That is not a bad way to do it at all! I’ve considered the same thing, the only reason I haven’t done it that way is the purist in me wants to keep them on a string like they came. No clue why lol, I guess so I can bring them with me all-in-one, and then I’d like to be able to easily take apart if needed. But your way is probably the best compromise.
May eventually get about 3/4" thick piece of acrylic and drill to fit to keep them in order, like a socket holder.
But this was fast and dirty.
That would be handy for sure. Agreed though, getting rid of the cable was a good move. It’s always a hassle unless I’m testing a loose bolt or nut. Testing any holes on the Jeep is a huge PITA.