BobUK
Member
If you are looking for the names of ordinary leatherwork tools, buckles, rivets, catches, D rings etc. have a look at Tandy Leather.
tandyleather.com
Not the cheapest, but it gives you an idea of item names to search for elsewhere.
If it is camera specific items you have a bit of work on your plate.

Tandy Leather
Leather materials and supplies for all crafters ranging from the hobby level to commercial.

Not the cheapest, but it gives you an idea of item names to search for elsewhere.
If it is camera specific items you have a bit of work on your plate.