and total length is 3.55" from top to bottom. Length of the threads is 1.06". Diameter is 3/8".

For my power steering conversion on my 235 I used bolts from a Jeep inline 6. The overall length is a bit longer so I ended up cutting about a 1/2" off. The thread length came out to be the same and so did the overall length, and a plus was it had a 7/16" stud on top which I used to bolt my upper alternator mount to.

More details on my conversion here
https://www.stovebolt.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=494191#Post494191