Call your local electrical supply house(or whomever you can get a PO for).
Most time there will be a hole for attachment where the writing is.
Some not all lugs might also have a dual rating as to cover multiple wire sizing so don't let that throw you. Since the wire is so large sometimes the lug is built to even allow for two wires.
"polaris" lugs (a brand name) might be a good, safer alternate depending on the lugs usuage. It is a lug with a non conductive plastic covers.
ILSCO is another lug manufacture.