I believe that the light-line folks have saved those off of salvage jobs. Give any one of them a call.
A reminder: as you probably already know, be very careful with these bolts. These blots have a very
fine thread and to over torque them is very easy to do. Be sure the copper sealing washers are
replaced for ease of sealing. Sometimes you can get away with flipping them over when reusing.
Hope this helps.