Steinway agraffes

[Phil Ryan]

I have a job to replace one broken-off agraffe on a Steinway L (50-60 
years old).  Someone told me that Steinway pianos use/used a "different" 
size agraffe.  Is that true?  I have the 7/32" and 1/4" thread agraffes 
listed in the Schaff catalog.  Will they fit?  If not where would one 
find such a part?

Phil Ryan