1 definition by 1ofmanytoo

UNF

For all of you vulgar people it can also mean the abbreviation for Unified National Fine (as in thread of a mechanical device that has a spiral groove cut in it for holding and fastening things together, most times called a "screw" that has no connotations to vulgarity.

When purchasing screws be sure to specify the thread type UNF as opposed to UNC

by 1ofmanytoo July 12, 2011