Over the years my 1985 110 County has broken 3 or 4 wheel studs. They are very easy to replace. new ones available from 4WD's in Blackburn, Melbourne. With new nuts and postage about $9 or $10 a set. probably just old age and hard yakka, you can see the gradual crystalization of the stud at the break. (I've done 300k on bush roads)

