Any chance of a description of the piece you want a hinge for?
As hinges in small things like lockets, vinaigrettes , snuff boxes
cent/perfume bottles and bracelets etc are a real pain to get right in the 1st place and 2ndly when they need repair.
Never use steel pins, stainless is ok but there normally in nickel brass, hard and good self lube in silver .
Await your reply.