National Item Identification Number
National Stock Number
Federal Supply Class
An item, made of rubber or plastic, usually cylindrical, with or without a flange, having one or more holes extending through its entire length, usually parallel to its axis. The overall length must exceed 25 percent of its diameter or a distance across the peripheral flats for items without a flange. For items formed of other material see BUSHING, SLEEVE. Excludes BUMPER, NONMETALLIC and GROMMET NONMETALLIC.
Commercial and Government Entity Code (Supplier Data)
Reference Numbers (Part Numbers)
SPLIT DESIGN FEATURE
RUBBER, MIL-STD-417, TYPE R, CLASS RN, GRADE RN520BC1F1NK1