83553-78X3 PIECE 2

View detailed technical data, stock status, and sourcing information for: 83553-78X3 PIECE 2
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Federal Supply Group

Valves

Federal Supply Classification

4820 Nonpowered Valves

National Stock Number

4820-00-085-2285

Item Name Code

22113

Assigment Date

10/09/1974 (51 years ago)

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.

zzzy criticality code justification, items that support a level i or subsafe critical system/component that has undergone quality assurance during the acquisition process and requires objective quality evidence (oqe) traceable to permanent marking on the material reference number differentiating characteristics

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Criticality Code Justification: zzzy
Reference Number Differentiating Characteristics: items that support a level i or subsafe critical system/component that has undergone quality assurance during the acquisition process and requires objective quality evidence (oqe) traceable to permanent marking on the material

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-00-535-3039	No Name Available	07/01/1997

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
77553-78X14PC2	Valve Seat
77553-78X14PC2Q3	Valve Seat
803-4384539 PIECE 114	Valve Seat
803-4384539 PIECE 114Q3	Valve Seat
803-4384539-X-114	Valve Seat
803-4384539-X-114Q3	Valve Seat
810-4384539 PIECE 114	Valve Seat
810-4384539 PIECE 114Q3	Valve Seat
83553-78X3 PIECE 2	Valve Seat
83553-78X3 PIECE 2Q3	Valve Seat
SSN637-515-2143625PC2	Valve Seat
SSN637-515-2143625PC2Q3	Valve Seat

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 4820-00-085-2285?

The FSCG of the NSN 4820-00-085-2285 is 4820

Does the NSN 4820-00-085-2285 have a Schedule B code assigned?

Yes, the Schedule B code is 8481909090

Does NSN 4820-00-085-2285 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 4820-00-085-2285 contain precious materials?

Item does not contain precious metal.

Does NSN 4820-00-085-2285 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 4820-00-085-2285 was assigned to the Federal Catalog?

It was assigned 51 years ago, on Wed, Oct 9, 1974