question about bolt

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sstein
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question about bolt

Postby sstein » Sun Sep 08, 2019 7:27 pm

I am putting my stock exhaust back on. Lost the original bolt to fasten it to the bracket

It is a HEXAGON SCREW WITH FLANGE - M8X40-8.8-ZNS3

I get that this is a metric 8 mm diameter bolt, 40 mm long. What is the 8.8 and the ZNS3?

Is this something I can get at like Home Depot or a local hardware place? Or more specific?
2002 R1150R
"Better is the enemy of good enough"
- my brother-in-law's brother

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towerworker
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Re: question about bolt

Postby towerworker » Sun Sep 08, 2019 7:57 pm

Not sure what the ZNS3 is but the 8.8 designates a high strength bolt. Equivalent to a Grade 8 in a SAE bolt. Also probably a fine thread bolt. Pitch of 1.25 or 1.0. A pitch of 1.5 is considered a coarse thread. And yes a good hardware or building supply should have it.
The Older I Get, The Less I know. (in honor of MikeCam)

sstein
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Posts: 398
Joined: Thu May 05, 2011 10:52 pm
Donating Member #: 25
Location: Providence, RI

Re: question about bolt

Postby sstein » Mon Sep 09, 2019 4:04 am

Great thanks.
2002 R1150R
"Better is the enemy of good enough"
- my brother-in-law's brother

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Mr.Frequent
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Re: question about bolt

Postby Mr.Frequent » Tue Sep 10, 2019 11:47 pm

ZN just designates a zinc coating ,but I think Motorrad switched to a different plating method now.
8.8 is the strength ; wish tje had hashmarks on them like SAE does.

sstein
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Posts: 398
Joined: Thu May 05, 2011 10:52 pm
Donating Member #: 25
Location: Providence, RI

Re: question about bolt

Postby sstein » Thu Sep 12, 2019 4:54 am

Thanks. I ended finding the right bolt at the hardware store. It is zinc coated but I don't know what the strength is. seems to work fine.
2002 R1150R
"Better is the enemy of good enough"
- my brother-in-law's brother

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Mr.Frequent
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Posts: 26
Joined: Thu Jun 11, 2015 9:13 pm

Re: question about bolt

Postby Mr.Frequent » Thu Sep 12, 2019 10:28 pm

I can't imagine that even a bit softer bolt would hurt since it's just the exhaust.


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