Muffler fastener thread type

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Feb 17, 2018 | 08:40 PM

16Stingray

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Muffler fastener thread type

Does anyone know what the thread type is for the two screws that bolt the two mufflers together?
I have tried M8x1.25 and M8x1.0 as well as 5/16-18 and 5/16-24.
The M8x1.25 seemed the closest but after a few turns it got hard to turn.

Anyone know for sure?

Feb 17, 2018 | 11:25 PM

Max Bet

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From: Henderson NV

Well I have a base exhaust sitting in the garage and the bolts are M8X1.25. I ran one through a die just to be sure. Is it the same as the NPP? Don't know.

Feb 18, 2018 | 11:39 AM

16Stingray

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Quote:

Originally Posted by Max Bet

Well I have a base exhaust sitting in the garage and the bolts are M8X1.25. I ran one through a die just to be sure. Is it the same as the NPP? Don't know.

ok thanks, i was leaning toward thats what it should be, i will try with a little more effort in putting the screw in and hope for the best.

Thanks

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