National Item Identification Number
00-474-2021
004742021
4820-00-474-2021
4820-00-474-2021
National Stock Number
Item Name
SEAT,VALVE
Federal Supply Class
4820
Description
A replaceable item designed to provide a circular stationary seating surface for a mating, moveable item such as a valve disk or the like. The body may have a flange of various shapes. For diesel and gasoline reciprocating engines, see INSERT, ENGINE VALVE SEAT.
Commercial and Government Entity Code (Supplier Data)
26512
Reference Numbers (Part Numbers)
96014
Required Categories
MATERIAL
HARDNESS RATING
SEATING SURFACE SHAPE
THREAD SERIES DESIGNATOR
NOMI
Required Description
STEEL OVERALL
33.0 ROCKWELL C MINIMUM AND
37.0 ROCKWELL C MAXIMUM BODY
FLAT;