Product Details | VALVE SEAT

4820-00-340-0856 A replaceable item designed to provide a 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.20248100015Valves, Powered48200018Valves, Nonpowered

Part Alternates: 8U80185, 8U8018-5, 4820-00-340-0856, 00-340-0856, 4820003400856, 003400856

Valves | Valves, Nonpowered

Supply Group (FSG) NSN Assign. NIIN
48 01 JAN 1963 00-340-0856

Cross Reference | NSN 4820-00-340-0856

Part Number Cage Code Manufacturer
8U8018-5 60029 WOODWARD, INC. DBA WOODWARD HRT

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Technical Data | NSN 4820-00-340-0856

Characteristic Specifications
FLANGE DIAMETER 0.558 INCHES MINIMUM AND 0.560 INCHES MAXIMUM
BODY OUTSIDE DIAMETER 0.433 INCHES MINIMUM AND 0.435 INCHES MAXIMUM
BODY INSIDE DIAMETER 0.188 INCHES MINIMUM AND 0.189 INCHES MAXIMUM
FLANGE SEAT TO DISK END HEIGHT 0.890 INCHES MINIMUM AND 0.900 INCHES MAXIMUM
UNDER FLANGE HEIGHT 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM
MATERIAL ALUMINUM ALLOY 7075 OVERALL
SURFACE TREATMENT ANODIZE OVERALL
SPECIAL FEATURES 4 BLEED HOLES
III FSC APPLICATION DATA VALVE,LINEAR,DIRECTIONAL CONTROL,ACFT
MANUFACTURERS CODE 60029
DESIGN CONTROL REFERENCE 8U8018-5

Restrictions/Controls & Freight Information | NSN 4820-00-340-0856

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:BMunitions List Item - Mutilation (MUT) to the point of scrap required. (Formerly: Demilitarization not required. Trade Security Controls (TSCs) required at disposition.)
Precious Metals Indicator Code:UPrecious metal type is unknown
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Category Code Description
No Freight Information