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RED-Z06

Bolts that mount the fender pan on a 312-8

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RED-Z06

Mine had no hardware, it looks like 5/16-18 x 3/4 on the seat bracket (4) and the others 5/16-18 x 1/2?

 

The gas tank is like right there in back...

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kpinnc

Can't be 100% sure on the lengths, but you're correct on the thread size.

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RED-Z06
15 minutes ago, kpinnc said:

Can't be 100% sure on the lengths, but you're correct on the thread size.

I guess if it's too close to the tank I can trim them some.

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kpinnc
12 minutes ago, RED-Z06 said:

I guess if it's too close to the tank I can trim them some.

 

I've never hit the tank, even with 3/4 lengths. And I always use washers too, but that doesn't take much length off.

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RED-Z06
5 minutes ago, kpinnc said:

 

I've never hit the tank, even with 3/4 lengths. And I always use washers too, but that doesn't take much off

You know thinking back there were reliefs on the tank i saw while power washing the inside...wonder if those happen to line up under the mounts?..

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Jeff-C175
24 minutes ago, RED-Z06 said:

You know thinking back there were reliefs on the tank i saw while power washing the inside...wonder if those happen to line up under the mounts?..

 

Yes, they do.  I just did mine and stuck my caliper down the hole to measure.  I don't recall the exact depth but it was at least an inch.  I used 1" bolts with a flat and a lock on all of them.

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RED-Z06
1 hour ago, Jeff-C175 said:

 

Yes, they do.  I just did mine and stuck my caliper down the hole to measure.  I don't recall the exact depth but it was at least an inch.  I used 1" bolts with a flat and a lock on all of them.

Ah that makes sense.  

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pacer

A little bit OT, but have you guys ever tried "flange head" bolts/nuts? I picked up a Massey garden tractor and apparently they used ALL flange heads thru out and I have fallen in love with them. I even went over to my bolt place and bought a bucketful of assorted sizes. Eliminates need for lock washers....

 

92323A558P2-c01a-digitall@1x_637171787673000923.png?ver=ImageNotFound

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pfrederi
7 minutes ago, pacer said:

A little bit OT, but have you guys ever tried "flange head" bolts/nuts? I picked up a Massey garden tractor and apparently they used ALL flange heads thru out and I have fallen in love with them. I even went over to my bolt place and bought a bucketful of assorted sizes. Eliminates need for lock washers....

 

92323A558P2-c01a-digitall@1x_637171787673000923.png?ver=ImageNotFound

  I use them a lot on my Horses  Like fender bolts asked about here.  The are really good for sheet metal.  Especially when the holes are slots or just wallowed out from age...

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RED-Z06
39 minutes ago, pfrederi said:

  I use them a lot on my Horses  Like fender bolts asked about here.  The are really good for sheet metal.  Especially when the holes are slots or just wallowed out from age...

I use flanged bolts alot but not the serrated style, they bite well but after a few uses they begin to erode the sheemetal a bit.

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Jeff-C175
12 minutes ago, RED-Z06 said:

after a few uses they begin to erode the sheemetal a bit

 

Yeah, something that gets frequently taken apart should probably not use them.  I consider them for something that goes together and stays together.

 

And they sure will mess up some paint too.  Much more so than a flat washer with a lock washer would!

 

 

Edited by Jeff-C175

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pfrederi
20 minutes ago, Jeff-C175 said:

 

Yeah, something that gets frequently taken apart should probably not use them.  I consider them for something that goes together and stays together.

 

And they sure will mess up some paint too.  Much more so than a flat washer with a lock washer would!

 

 

  Conversely they make better grounds....

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pacer

Like many things, the serrated bolts have a place among all the other hardware. On the Massey I mentioned there was a mix of different bolt types. While I was aware of them, I just had never used them other than occasionally and when I took the MF apart and reassembled it I became impressed with them.

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Jeff-C175
47 minutes ago, pfrederi said:

  Conversely they make better grounds....

 

Yes they do!

 

However, you don't want to use them for mounting a ring lug!  They'll chew those up and spit them out!  For that application a toothed washer is 'on call'.

 

Edited by Jeff-C175
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