At first: how do you know my real name???
sorry if I have used your real name here....
......and I hope you do not mind if Italy scored right at the end of the match with Netherland last night !!!! ;-)
You only need to include entries in BITEMS if you need to report them separately on the BOM and have included them in the Bolt Spec.
If Nuts & Washers are supplied with the Bolt, you can just include the length in BITLEN with no entry in BITEMS.
The number of entries in BITLEN does not have to match the number of entries in BITEMS