Author Topic: header nuts  (Read 418 times)

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Offline EZ

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header nuts
« on: July 31, 2018, 01:11:15 pm »
Does anyone have a source for the 8mm fugi header nuts? Amazon is out - Fastenal, Grainger .... no joy.  Found one source but I really don't want to spend $48.00
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Offline turbo-max

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Re: header nuts
« Reply #1 on: July 31, 2018, 01:57:15 pm »
how many do you need? im sure i have a few used...sending a PM also
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Offline EZ

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Re: header nuts
« Reply #2 on: July 31, 2018, 02:36:03 pm »
Thanks TM. Just realized this was in ZG 1000 not 1400, where it should be. If its not moved in a day or so I'll re post there..
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Offline MAN OF BLUES

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Re: header nuts
« Reply #3 on: July 31, 2018, 06:54:38 pm »
I figured that, I'll note a mod to move it, so check there later...
in the meantime, these are what work, and cheaper...

Exhaust Header Nuts (Replacements) -
McMaster-Carr 93795A230 M8.0 Oval Lock nut.  Use with stainless steel washers.
(Note:  The 2010 Service Manual shows the required torque @ 13ft/lbs.)

My personal opinion tho, working and specifying fasteners and torques and such, is that trying to achieve a 'torque' rating on a 'deformed' style lock nut, is nullified by the force it takes to simply tighten it on the threads, so I suggest just prudent 'good-n-tite' without bending the flanges.

best of luck, :great:
« Last Edit: July 31, 2018, 06:58:11 pm by MAN OF BLUES »

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Offline EZ

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Re: header nuts
« Reply #4 on: July 31, 2018, 09:32:55 pm »
I love it! I knew you'd come through if I posted it here  :truce:
Cheaper and works well, say no more. That's a done deal and as always this cat appreciates your input Rich!  :beerchug:
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Offline MAN OF BLUES

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Re: header nuts
« Reply #5 on: July 31, 2018, 11:50:37 pm »
I have not used the nut I noted, on the header studs, so I caution about their usage, being as they are a higher strength rated nut... just be careful and don't strip the studs...
In applications where lock nuts are removed maybe twice in the life of the machine, I don't worry; but in cases where more removals are required periodically, I worry they may at some point, damage the threads as they do squeeze the threads during the deformation process on the nut.

My personal opinion is to use a 'Keps' style (captive star washer), which are quite good at resisting the nut from backing off, without possibility of thread damage...
https://www.mcmaster.com/#metric-nuts/=1dyj1l1

or even 'serrated flange' nuts, which allow use without the need of a flat washer under them...
https://www.mcmaster.com/#metric-nuts/=1dyj5fo

both types in my book, work well, and are common industry standard for things like this.
and, comparably priced.

30 YEARS OF KAW.....Rich R. (the other one..)  COG 5977  JUSTAMEMBAHNOW
and if you are gonna call me names... it's MR. Analdweeb if you please...