I'm not a parts vendor may may just have what you're looking for . . . or can give you a name or two to contact if I don't.
Tell me a little more . . . is your a model marked 17 or 18? Does it have the speed (aka fishhook) hammer or the later standard hammer? (not sure when they switched over) Send a picture if possible.
Russ
edit: oops, I just noticed you said "standard" hammer. I believe that's what I have and can send you a picture if you'll send your email address
[email protected]