Definition
Definition of approved item name (AIN): "NUT,PLAIN,CASTELLATED,HEXAGON"
A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, slotted, hexagon.
Identification
Item Identification Guide (IIG) and Item Name Code (INC)