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Thread: seats out, false floor in, bolts too short

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    seats out, false floor in, bolts too short

    Hi folks, I took out the rear 'dicky' seats and their mounts, and slid in my false floor and even manged to get some holes lined up pretty well. The four existing Nissan bolts are too short to go through the thickness of my false floor but I'm keen to secure it down. I took one to a bolt place and the guy confidently said "Oh yeah mate that's a _______________" - I have forgotten what he said of course but he sold me the four I needed that were a bit longer.

    They don't fit - the thread is off.

    Can anybody tell me what I need to know to find/order/ask for the right thread?

    2003, GU wagon.

    Thank you, Peter

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    Moderator MudRunnerTD's Avatar
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    Nissan is a Metric bolt. the Seat bolts have a slight taper in then with a thread cut and are installed inte h factory to cut the thread at the same time. Pain in the arse to be honest. Note the originals have a slightly smaller end on them. You should be able to lay the new and old bolts on top of each other end for end, if the threads sit into each other then they are the same. and should be ok. can be a bit of a bugger though. even feel a little cross threaded to be honest. Check that they lay into each other before giving it any force.
    Its a Nissan! =====> Its a Keeper!! ....... Got a TD42 in it BONUS!! ....... I'm a lucky bugger! I've got 2 of em!
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    Quote Originally Posted by Rogue Dung Beetle View Post
    Wish it was Nissan though, Toyotas just can't keep up with the Pootrol pace.
    The only good thing about an 80 series is..... the front end?? Wrong!!, the Engine?? Wrong!! the Full Time 4WD system?? Wrong!! Its the NissanPatrol.com.au stubby holder fitted over the transfer lever.
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    Moderator MudRunnerTD's Avatar
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    They will be an M10 or M12 though, i cant remember.
    Its a Nissan! =====> Its a Keeper!! ....... Got a TD42 in it BONUS!! ....... I'm a lucky bugger! I've got 2 of em!
    Check out my Toy --> MudRunnerTD's GQ From the Ground Up

    Quote Originally Posted by Rogue Dung Beetle View Post
    Wish it was Nissan though, Toyotas just can't keep up with the Pootrol pace.
    The only good thing about an 80 series is..... the front end?? Wrong!!, the Engine?? Wrong!! the Full Time 4WD system?? Wrong!! Its the NissanPatrol.com.au stubby holder fitted over the transfer lever.
    WARNING: Towballs used for recoveries can, and do kill people and damage property.

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    Thanks MudRunner - are you saying if the thread is the same, put them in and because of the Nissan taper they may feel like they’re cross threading but just keep on going?

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    They are a fine pitch metric bolt in that size. I know because i have the taps now for the nissan threads. eg M10 x 1.5 is metric coarse, but the patrol bolts are either 1.25 or 1.0. If they don't match using MR's method, zip down to the local bolt supplier and they will sort it out pretty quickly. this goes for the m12 and m14 bolts as well, fine pitch. Below this nissan adopt metric coarse, such as m6 x 1p and m8 x 1.25P. I wasn't aware of the tapered profile as such, thought this was a design aspect to aid misaligned bolts and improve centering rather than a taper like a pipe thread - maybe i am wrong - seems odd though.

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    Just for interest there are some fine threads on my Patrol which appear not to be metric. They are in the chassis toward the back. I posted once before & no-one was able to ID what they were, & more surprisingly when I took the car to a bolt supplier with comprehensive stocks they too were surprised when they went through a heap of different bolts, checked with thread gauges etc & were unable to match the thread. They remain a mystery

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    Quote Originally Posted by Peter Comber View Post
    Thanks MudRunner - are you saying if the thread is the same, put them in and because of the Nissan taper they may feel like they’re cross threading but just keep on going?
    In a nutshell....

    19665236_10158820902195447_3259339701812564848_n.jpg

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    On my 2015 GU wagon they are definitely M10 x 1.25. I use several of the existing seat anchor holes to secure my gear with non-Nissan bolts.

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    Patrol God threedogs's Avatar
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    The front seat bolts on my 04 patrol are 10mm x 1.25 pitch which is the fine thread
    Last edited by threedogs; 10th July 2020 at 09:28 AM. Reason: right thread now
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    Get a bolt/thread guage off ebay. They're worth everything.
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