The Spider,dog,hatch, cataloged under National Stock Number 2040-01-512-8140, is classified within Federal Supply Class 2040 (Marine Hardware and Hull Items) of the Ship and Marine Equipment group. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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.
Catalog Facts
Item Name
Spider,dog,hatch
FSC / FSG
2040 — Marine Hardware and Hull Items (FSG 20)
Technical Specifications
Parameter
Value
NSN
2040-01-512-8140
Item Name
Spider,dog,hatch
FSC / FSG
2040 / 20 — Marine Hardware and Hull Items
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 Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5342-01-648-4105803-5184174 PC 35POSSIBLE MATCH
WEDGE,DOG,DOOR-HATCH
Possible match (shared part number)Naval Sea Systems Command
5315-01-648-4109803-5184174 PC 70POSSIBLE MATCH
PIN,STRAIGHT,HEADED
Possible match (shared part number)Naval Sea Systems Command
3040-01-648-5581803-5184174 PC 25POSSIBLE MATCH
CAM,CONTROL
Possible match (shared part number)Naval Sea Systems Command
5340-01-648-5593803-5184174 PC 28POSSIBLE MATCH
HANDWHEEL
Possible match (shared part number)Naval Sea Systems Command
4730-01-649-1254803-5184174 PC 15POSSIBLE MATCH
STRAINER ELEMENT,SEDIMENT
Possible match (shared part number)Naval Sea Systems Command
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
803-5184174-26
5/2Secondary reference
U.S. Government activity
JE174-26
3/2Design control — primary reference
U.S. Government activity
803-5184174
D/9Drawing number reference only
U.S. Government activity
Related Parts
5342-01-648-4105POSSIBLE MATCH
WEDGE,DOG,DOOR-HATCH
803-5184174 PC 35
5315-01-648-4109POSSIBLE MATCH
PIN,STRAIGHT,HEADED
803-5184174 PC 70
3040-01-648-5581POSSIBLE MATCH
CAM,CONTROL
803-5184174 PC 25
5340-01-648-5593POSSIBLE MATCH
HANDWHEEL
803-5184174 PC 28
4730-01-649-1254POSSIBLE MATCH
STRAINER ELEMENT,SEDIMENT
803-5184174 PC 15
Frequently Asked Questions
What is NSN 2040-01-512-8140?
NSN 2040-01-512-8140 is a Spider,dog,hatch, classified under FSC 2040, Marine Hardware and Hull Items. Status: active.
What NSN replaces 2040-01-512-8140?
5 possible matches (shared part number, not a government interchangeability claim): 5342-01-648-4105, 5315-01-648-4109, 3040-01-648-5581. Verify interchangeability with system specifications before substitution.
Is NSN 2040-01-512-8140 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.