Manifold Stud Size? 1950 Buick

[Dan O]

I just left town without my sample stud - can anyone tell me what size I need for exhaust manifold mounting stud for 1950 Buick 320?  It's coarse thread on one end and fine on the other.

 

I see Bob's sells them but I'd like to just get some new ones at my local parts shop.

 

Also - anyone know a source for the manifold washers besides $4.50 each at Bob's Automobila? 

 

Edited May 30, 2020 by Dan O (see edit history)

[Fr. Buick]

The closest I could get 20 years ago were heavy round washers and slightly longer studs that all had to be trimmed down on a grinding wheel.  A lot of work, and then painted with manifold paint.  If you want pretty and simple, go with Bob's.

[Dan O]

Thanks, Doug.  The bolts are 5/16" standard thread one end and fine on the other.  The length from Bob's and Cars is 2".  Dorman makes them and are available from parts shops.

Edited June 2, 2020 by Dan O (see edit history)