National Item Identification Number
01-181-8657
011818657
4820-01-181-8657
4820-01-181-8657
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)
43689
43689
Reference Numbers (Part Numbers)
208-4325303
208-4325303 PIE
208-4325303 PIECE 9
6553-255
6553-255 PIECE 9
Required Categories
STYLE DESIGNATOR
OVERALL HEIGHT
BODY INSIDE DIAMETER
MATERIAL
HARDNESS RATIN
Required Description
B5 PLAIN THREADED
0.634 INCHES NOMINAL
4.250 INCHES NOMINAL
NICKEL ALLOY OVER
