I had a muffler bolt come out of my jag muffler does anybody know what size the muffler bolts are thanks michael

should be 10-24 threads, take the other one in to the hardware store to get a matching length one...

thanks michael

The two I have are 12-24


Waldo
Waco brotherhood #22

I tried a 10mm and it did not fit think it was to big well i am going to a big hardware store and try and find one what i have is a jag engine 360 muffler i put lock tight on the bolts and they backed out so i guess i will use a washer and a split washer and lock tight michael

#10 not 10mm, #10 is about 3/16", #12 is just under 1/4".

12-24 is hard to find.

well i found a 12x24 screw its not a cap head screw but it will do i am going to put a split washer on it and lock tight it and hope it wont back out again michael

Another option if backing out persists:
http://www.rc51.org/wire1.htm

Standard,or vice grip pliers will be fine for your two bolts.
Pay particular attention to the wire routing direction.
Look around the shop for a six inch piece of soft steel,light gauge,mechanics wire,or whatever small diameter stuff ya got.

iam retired us army i was a flight engineer on ch-47 and know about safity wireing bolts that was one thing i was looking at but when i replaced the screw i could not find a cap head screw so drilling it is out now thank you michael

I have a muffler that has been drilled to 1/4 standard, and it has a safety wire hole. I bought this engine from a swap meet and it was mostly junk, did retrive some good parts. Flathead