Definition
Definition of approved item name (AIN): "PIN,SHOULDER,HEADLESS"
A cylindrically-shaped headless item, having a shank at one or both ends. It is used for aligning, fastening, or transfer of torque and/or thrust by fitting into corresponding holes of another item. It may be threaded on one end.
Identification
Item Identification Guide (IIG) and Item Name Code (INC)