[TowerTalk] LM-354 Tower Base Bolts

[Ron W8RJL]

I am installing a used Tri-Ex LM-354 crank up tower. Can anyone tell me the proper grade of bolt (hardness) to use in this application. The LM-354 tower is 54 foot self supporting and will have a 3 element SteppIR for wind load. There are three 3/4" bolts securing each leg to the steel ears sticking out of the concrete base. I'm sure I can purchase the 3/4" bolts from Tashjian Tower in California but shipping is very expensive. Tashjian wanted $400 shipping and handling for getting the base to the east coast. I started looking through the archives but did not see anything on bolts. Thanks, Ron W8RJL