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  #11  
Old 08-06-2018, 09:52 AM
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Shellback Shellback is online now
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Quote:
Originally Posted by Huntindave View Post
The next step up in diameter would be to use a 13MM bolt which is .5118 inch diameter. I'm guessing a 13MM would go in your present holes without the need to open them to 9/16 (.5625) That way you take out the slop without losing any, or at least less, material in the hinge.
That's good info. I will check around to see if I can get a couple to keep with me.
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  #12  
Old 08-16-2018, 01:21 PM
frozen fish frozen fish is offline
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The factory Grade 5 bolt in my Fulton swing tongue on my Ezloader trailer broke causing $3191 damage to my truck. When the bolt broke, the trailer swung on the pin, hitting the truck twice. I've now replaced it with a grade 8 bolt.
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  #13  
Old 08-16-2018, 02:25 PM
Marty59 Marty59 is offline
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A grade 10.9 metric bolt is about equivelent to a grade 8 bolt in tensile strength. I put a 10.9 13 mm bolt in my swing tongue 5 years ago. Tight as can be..still!

Marty
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  #14  
Old 08-22-2018, 06:58 AM
Bill Krejca Bill Krejca is online now
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After reading posts a few times, and determining the A325 on the heads meant they were grade 5, decided to replace the bolts on my 2001 Shorelander. I miked the mounting holes, and they came out as .500 dia, seemed pretty good, apparently little wear. The bolts were .488 dia, turns out to be 1/2 - 20, according to the hardware store thread size tester. I picked up 2 grade 8's, kept the same nuts and bottom washer. When I tightened the bolts down, there was a small gap between the separate mating flanges, but after a bit of tightening them each a bit at a time, was able to make most of the gap disappear. The heads of the new bolts were 1/16 smaller than the old ones, 3/4 vs 7/8, but decided not to add a washer, as the shoulder on the new bolts was somewhat shorter than the old, figured the new bolts are much stronger than the old, so shouldn't be a problem. Kept the old bolts as spares. End of report!!

Bill
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  #15  
Old 08-22-2018, 07:16 AM
Hot Runr Guy Hot Runr Guy is online now
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Quote:
Originally Posted by Bill Krejca View Post
When I tightened the bolts down, there was a small gap between the separate mating flanges, but after a bit of tightening them each a bit at a time, was able to make most of the gap disappear.

Bill
Bill,
I'm such a nerd, I addressed the gap issue by buying an assortment of precision shims, and inserting them in the gap, rather than bending the flanges.

HRG
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  #16  
Old 08-22-2018, 07:59 AM
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I use to get grade 9 bolts (L9) locally for wear applications.

Also, grade 12.9 metric (similar to grade 9) are used in our cat construction equipment. I suppose if someone wanted to find these hard bolts, most construction equipment dealers should have different sizes in stock. FYI

Iím sure local hardware wonít have the L9 or 12.9.
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  #17  
Old 08-22-2018, 04:11 PM
Bill Krejca Bill Krejca is online now
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Quote:
Originally Posted by Hot Runr Guy View Post
Bill,
I'm such a nerd, I addressed the gap issue by buying an assortment of precision shims, and inserting them in the gap, rather than bending the flanges.

HRG
Ha! Probably a better solution than mine! Maybe i'll follow up on it. The thing is, that that gap must have existed before I change out the bolts, so I'm not sure I caused any extra stress on the flanges. I gotta admit the shim/washer addition does make a lot of sense, tho!

Bill
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  #18  
Old 08-26-2018, 03:11 AM
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Default My tongue

Ok, I installed my fulton fold away about 6 yrs ago, and I trailer about 10,000 miles a year, now I am worried as I see a little bit of play in that bolt. Plus, where can I get more of those rubber snubbers that meet where the two pieces of the tongue meet ?
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