National Item Identification Number
01-040-4180
010404180
4820-01-040-4180
4820-01-040-4180
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)
59364
72914
Reference Numbers (Part Numbers)
98D63-1
98D63-1
Required Categories
MATERIAL
MATERIAL DOCUMENT AND CLASSIFICATION
HARDNESS RATING
SEATING SURFACE
Required Description
STEEL COMP 440A OVERALL
AMS5631 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
51.0