I am in the process of refurbishing the 1966 Ludwig Downbeat Piccolo snare I picked up from a member and I am a bit confused about some of the tension rods.

They are the typical 2 1/4" overall - 1 7/8" shank - 7/8" thread length, however the part of the rod that has me baffled is the top of the tension rod head. It is has a square indent.

I think I have seen these before but I don't have access to my other snares to check as I am at my Canada house.

So, are these original from a 1966 Downbeat Ludwig or are they replacements?

I reached out to our Guru Mike Layton and he suggested I post this for input.

Of course, once I receive answers, look for a post in the wanted section as I need 4 of them to complete the rebuild.

Also, Any ideas on repairing a lug where the threaded part sheared off? I would like to either repair it or replace it so the drum can have all of the original screws and washers.

Thanks !

Michael