Hello,
On Ludwig Supraphonic/Acrolite snare drums the lugs are mounted with a cup washer, hexagonal bolt AND a split lock washer between bolt and cup washer.
On Jazz Festival snare drums the lugs are mounted with a flat washer and a hexagonal bolt but... without this split lock washer between bolt and flat washer.
Does someone know why and should I put a split lock washer myself during restoration to be sure bolts wouldn't come loose?
Thank you