PartsTable TECHNICAL DATA SHEET
NSN 2040-01-495-4231Government record, cited

Cover, Hatch2040-01-495-4231

NSN 2040-01-495-4231 · NIIN 014954231 · Part number 594-6985290-A3
Naval Sea Systems Command · FSC 2040 — Marine Hardware and Hull Items · FSG 20 — Ship and Marine Equipment · CAGE 53711
Government record, cited
NSN 2040-01-495-4231 — this item is cataloged by the U.S. Government under National Stock Number 2040-01-495-4231. Manufacturer of record part number: 594-6985290-A3.
Also searched as  2040-01-495-4231 · 2040014954231 · NIIN 014954231 · 01-495-4231 · FSC 2040 Marine Hardware and Hull Items · CAGE 53711 · 594-6985290-A3 · H541-0284 · H541-0284-A3 · 6985290
Nearby stock numbers  ·
Features
  • Cover,hatch — FSC 2040
  • Material: STEEL
  • 1 manufacturer part number on file
  • Manufacturer of record: Naval Sea Systems Command
Identification
  • NSN: 2040-01-495-4231
  • NIIN: 014954231
  • FSC: 2040 — Marine Hardware and Hull Items
  • FSG: 20 — Ship and Marine Equipment
  • Primary part number: 594-6985290-A3
  • Manufacturer: Naval Sea Systems Command
General Description

The Cover,hatch, cataloged under National Stock Number 2040-01-495-4231, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2040-01-495-4231
Primary Part Number594-6985290-A3
Item NameCover,hatch
FSC / FSG2040 / 20 — Marine Hardware and Hull Items
ManufacturerNaval Sea Systems Command
StatusACTIVE
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL D — Destroy Item
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3040-01-495-4749594-6985290-A9 POSSIBLE MATCH
CONNECTING LINK,RIGID
Possible match (shared part number)Naval Sea Systems Command
3040-01-495-4750594-6985290-A21 POSSIBLE MATCH
CONNECTING LINK,RIGID
Possible match (shared part number)Naval Sea Systems Command
2040-01-495-9587594-6985290-A2 POSSIBLE MATCH
COVER,HATCH
Possible match (shared part number)Naval Sea Systems Command
2040-01-547-19677383858-A52 POSSIBLE MATCH
COVER,HATCH
Possible match (shared part number)Naval Sea Systems Command
5315-01-643-4404EB211015947 POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
5310-01-707-6362594-6985290-95 POSSIBLE MATCH
WASHER,FLAT
Possible match (shared part number)Naval Sea Systems Command
9330-01-707-6390594-6985290-36 POSSIBLE MATCH
PLASTIC SHEET
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
594-6985290-A3 PRIMARY Naval Sea Systems Command (USA)
Reference documents
ReferenceMeaning
H541-0284 D/9 Drawing number reference only
U.S. Government activity
H541-0284-A3 5/2 Secondary reference
U.S. Government activity
6985290 D/9 Drawing number reference only
Naval Sea Systems Command
Related Parts
3040-01-495-4749POSSIBLE MATCH
CONNECTING LINK,RIGID
594-6985290-A9
3040-01-495-4750POSSIBLE MATCH
CONNECTING LINK,RIGID
594-6985290-A21
2040-01-495-9587POSSIBLE MATCH
COVER,HATCH
594-6985290-A2
2040-01-547-1967POSSIBLE MATCH
COVER,HATCH
7383858-A52
5315-01-643-4404POSSIBLE MATCH
PIN,STRAIGHT,HEADLESS
EB211015947
5310-01-707-6362POSSIBLE MATCH
WASHER,FLAT
594-6985290-95
9330-01-707-6390POSSIBLE MATCH
PLASTIC SHEET
594-6985290-36

Frequently Asked Questions

What is NSN 2040-01-495-4231?

NSN 2040-01-495-4231 is a Cover,hatch, manufactured by Naval Sea Systems Command, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.

What part numbers are listed for NSN 2040-01-495-4231?

NSN 2040-01-495-4231 has 1 manufacturer part number on file: 594-6985290-A3 (Naval Sea Systems Command).

What NSN replaces 2040-01-495-4231?

7 possible matches (shared part number, not a government interchangeability claim): 3040-01-495-4749, 3040-01-495-4750, 2040-01-495-9587. Verify interchangeability with system specifications before substitution.

What are the specifications of 594-6985290-A3?

Key specifications for 594-6985290-A3: Special Features: FAIRING ASSEMBLY,ITEMS INCLUDE 1 FAIRING COVER AFT, 1 FAIRING COVER PORT SECTION,1 FAIRING COVER MIDDLE SECTION,1 FAIRING COVER HINGE ASSEMBLY,1 FAIRING COVER STBD SECTION,AND OTHER MISCELLANEOUS ITEMS; End Item Identification: WEAPON SYSTEM:LOS ANGELES CLASS CVN; Material: STEEL. 1 specification is documented in the U.S. Government catalog.

Is NSN 2040-01-495-4231 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.

What is the DEMIL code for NSN 2040-01-495-4231?

NSN 2040-01-495-4231 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.

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.
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