[SEL] OT Strange bolt.

[William Olson]

Yes, I've run into a bolt like this a couple of times. I believe the 
threads on these bolts are not cut, but rolled into the body of the 
bolt.  Apparently the rolling dies got out of adjustment for the bolt. 
 I also believe that all Grade 8 bolts have rolled rather than cut 
threads, more like a forged bolt then.  I could b wrong, but I think 
this is the way it's done.
William Olson - Northern Minnesota.

BillMil357 at aol.com wrote:

>Hey Men, I was mounting a seat on a 1972 Cub Cadet Lawn tractor that I am  
>restoring and a fellow gave me four 5/16 in. bolts to mount it , three of the  
>bolts were fine but the other one I could not get the nut started, checked  
>closer and I could not see a taper of the threads on the end for a left hand or  
>right hand thread, I took one of the other bolts and put my thumb nail in the  
>second thread from the end and turned the bolt to the right and my nail moved 
> right up toward the head of the bolt, I did the same thing to the other bolt 
>and  my nail never move, it stayed in the same place on the bolt, turning it 
>to the  right of the left, so this bolt just had grooves cut into it straight  
>around the bolt and not connected to the next groove, has anyone ever seen 
>one  if so what in the world are they for, it would mesh right in one of the 
>other  bolts same amount of grooves per inch. In my 76 years on this earth I have 
>never  seen anything like it, someone give me some info. on this it bugs me 
>Ha Ha. I  bet you people thought I was gone but I browse on here every day.
>Thanks,  
>Bill Miller.
>Memphis, TN.
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