The recessed nut that holds the front brake on is a special nut. Does anyone out there in Seven land know where I can find one of these. I've tried Seven and Reynolds (the fork manufacturer) -- no joy. A local bike shop "loaned" me one, but I promised to replace it since it came off a show room bike.

Thanks in advance.

Determine what length you'll require and pay this site a visit:
http://www.hyperbolts.com/catalog/index.php
They carry a wide selection of small parts.

if it is a reynolds made 7 branded fork then 7 has the bolt and top cap you need in stock. they may charge you for it, but they have it. if it is an older generation, straight leg wound up fork then you might need to call advanced composites (parent company of wound up) to get the part.