Specifying Ferrule Bolts

Ferrule bolts do need nuts to be ordered.

If your bolt report has ferrule bolts, then you have to specify what is the Bolt Dia and Length of the Bolt dia. Also you must specify no nut required.

The other thing to note is that, You cannot give extra length. Your bolt length should be a bit less than the Thread in the ferrule + the washer + the material to be bolted.

If we nomintate extra length, then the Bolt will bottom out on the ferrule.

Problems with Incorrect specifications.

• Any thing like FEB in bolt report does not make any sense to our clients.
• Unless we annotate nuts are not required, large number of nuts will be purchased
• If we give extra length, the bolt cannot be used. Costing significant delays at site.