The Hatch,marine, cataloged under National Stock Number 2040-00-554-4056, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
2040-00-554-4056
Item Name
Hatch,marine
FSC / FSG
2040 / 20 — Marine Hardware and Hull Items
Status
ACTIVE
Spring Balance Feature
NOT INCLUDED
Opening Length
60.000 INCHES NOMINAL IN
Opening Width
30.000 INCHES NOMINAL IN
Test Pressure Rating
30.0
Coaming Height
12.000 INCHES NOMINAL IN
Rectangular Hatch Hinge Location
SHORT SIDE
Nondefinitive Spec/std Data
2 ASSEMBLY
Coaming Thickness
0.188 INCHES NOMINAL IN
Scuttle
NOT INCLUDED
Hasp
INCLUDED
Operating Location
ABOVE
Material
STEEL PANEL
Installation Design
RAISED
Operating Control Type
INDIVIDUAL DOG
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5340-01-683-3383805-1624076 PC 78POSSIBLE MATCH
PAD,CUSHIONING
Possible match (shared part number)Naval Ship Systems Command
5340-01-683-4686805-1624093 REV E PC NO. 75POSSIBLE MATCH
BRACKET,MOUNTING
Possible match (shared part number)Naval Ship Systems Command
5340-01-683-4704805-1624093 REV E PC NO. 86POSSIBLE MATCH
STAPLE,HASP
Possible match (shared part number)Naval Ship Systems Command
5340-01-686-7756805-1624093 REV E PC NO. 84POSSIBLE MATCH
STAPLE,HASP
Possible match (shared part number)Naval Ship Systems Command
5340-01-688-2306805-1624076 PC 121POSSIBLE MATCH
BRACKET,MOUNTING
Possible match (shared part number)Naval Ship Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
805-1624076ASSY2
5/2Secondary reference
U.S. Government activity
805-1624076
3/1Design control — primary reference
U.S. Government activity
Related Parts
5340-01-683-3383POSSIBLE MATCH
PAD,CUSHIONING
805-1624076 PC 78
5340-01-683-4686POSSIBLE MATCH
BRACKET,MOUNTING
805-1624093 REV E PC NO. 75
5340-01-683-4704POSSIBLE MATCH
STAPLE,HASP
805-1624093 REV E PC NO. 86
5340-01-686-7756POSSIBLE MATCH
STAPLE,HASP
805-1624093 REV E PC NO. 84
5340-01-688-2306POSSIBLE MATCH
BRACKET,MOUNTING
805-1624076 PC 121
Frequently Asked Questions
What is NSN 2040-00-554-4056?
NSN 2040-00-554-4056 is a Hatch,marine, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
What NSN replaces 2040-00-554-4056?
5 possible matches (shared part number, not a government interchangeability claim): 5340-01-683-3383, 5340-01-683-4686, 5340-01-683-4704. Verify interchangeability with system specifications before substitution.
What are the specifications of 2040-00-554-4056?
Key specifications for 2040-00-554-4056: Spring Balance Feature: NOT INCLUDED; Opening Length: 60.000 INCHES NOMINAL IN; Opening Width: 30.000 INCHES NOMINAL IN; Test Pressure Rating: 30.0. 14 specifications are documented in the U.S. Government catalog.
Is NSN 2040-00-554-4056 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.