Amy-Navy Approved AN931 Specification MIL-G-3036 GROMMETS Grommets charted,with the exception 0f an930.Grommets listed, are standard 1/16 groove width,AN931 drawing,however,does provide for larger groove width by addition of letters,A-1/8",B-3/16",C-1/4",etc.indicated example:AN931-B6-10,these cab vbe supplied if ordered per above example."s" betwen first and second dash numbers indicates split ...