They are certainly no bigger than 3/8 or 5/16 so if nothing normal fits they must be metric.
q-tec sells locking nut kits, look those up and see if the size is listed.
"The right to be heard does not necessarily include the right to be taken seriously." —Hubert Humphrey
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.