NSN 5310-01-504-1590 · NIIN 015041590 · Part number 6390821-9
Naval Sea Systems Command · FSC 5310 — Nuts and Washers · FSG 53 — Hardware and Abrasives · CAGE 53711
Government record, cited
NSN 5310-01-504-1590 — this item is cataloged by the U.S. Government under National Stock Number 5310-01-504-1590. Manufacturer of record part number: 6390821-9.
Also searched as5310-01-504-1590 ·
5310015041590 ·
NIIN 015041590 ·
01-504-1590 ·
FSC 5310 Nuts and Washers · CAGE 53711 · 6390821-9 · 5793295 FIND 170 · 5793295 · 6390821
The Washer,flat, cataloged under National Stock Number 5310-01-504-1590, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 11 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Washer,flat
FSC / FSG
5310 — Nuts and Washers (FSG 53)
Manufacturers
Naval Sea Systems Command (CAGE 53711); Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (CAGE 31442)
Technical Specifications
Parameter
Value
NSN
5310-01-504-1590
Primary Part Number
6390821-9
Item Name
Washer,flat
FSC / FSG
5310 / 53 — Nuts and Washers
Manufacturer
Naval Sea Systems Command
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items11
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5365-01-504-19847326723-1POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-504-20956394458-4POSSIBLE MATCH
SPACER,PLATE
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-504-21086394458-2POSSIBLE MATCH
SPACER,PLATE
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-504-21156394458-3POSSIBLE MATCH
BUSHING,NONMETALLIC
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-504-21345793295-5POSSIBLE MATCH
SPACER,PLATE
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-504-24795793295-1POSSIBLE MATCH
SPACER,PLATE
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-504-24835793295-2POSSIBLE MATCH
SPACER,PLATE
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5365-01-504-24855793295-3POSSIBLE MATCH
SPACER,PLATE
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
4730-01-504-5325H823T-16-T2-LW-Z-TPOSSIBLE MATCH
ELBOW,TUBE TO BOSS
Possible match (shared part number)Admiral Valve Llc Dba Cpv Manufacturing
4710-01-504-54056390939POSSIBLE MATCH
TUBE ASSEMBLY,METAL
Possible match (shared part number)Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
NSN 5310-01-504-1590 is a Washer,flat, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
What part numbers are listed for NSN 5310-01-504-1590?
NSN 5310-01-504-1590 has 3 manufacturer part numbers on file: 5793295 FIND 170 (Naval Sea Systems Command), 6390821-9 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 6390821-9 (Naval Sea Systems Command).
What NSN replaces 5310-01-504-1590?
11 possible matches (shared part number, not a government interchangeability claim): 5365-01-504-1984, 5365-01-504-2095, 5365-01-504-2108. Verify interchangeability with system specifications before substitution.
Is NSN 5310-01-504-1590 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.