I think I use 242, it is red regardless of the number.
The secret is to use the primer. You have to get the female threads really clean
(alchol, laquer thinner, or brake cleaner) let it dry and spray the Loctite primer into the holes.
Let the primer dry and reassemble with red loktite.
Get the primer!
I accidently found it at our local John Deere dealer.
The hardware stores didn't carry it.
They may call it something else; I'll check when I get home.
FM