Thank you JDW.When i measure the bushing it measure 7,93mm,its 0.3125" (5/16).But the problem is I can't get any 5/16-32 easyly.
But I whill ask an old gunsmith who has worked in Husqvarna factory
if he have any left.(5/16-32 was used in ejektormek.long time ago)

Regards Lennart