FSC: 1270 — Aircraft Gunnery Fire Control Components
FSG: 12 — Fire Control Equipment
General Description
The Gearcase Assembly, cataloged under National Stock Number 1270-00-321-2473, is classified within Federal Supply Class 1270 (Aircraft Gunnery Fire Control Components) of the Fire Control Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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
Gearcase Assembly
FSC / FSG
1270 — Aircraft Gunnery Fire Control Components (FSG 12)
Technical Specifications
Parameter
Value
NSN
1270-00-321-2473
Item Name
Gearcase Assembly
FSC / FSG
1270 / 12 — Aircraft Gunnery Fire Control Components
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL B — Remove Demilitarization Key Points
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3110-00-554-52386206ZMAXPOSSIBLE MATCH
BEARING,BALL,ANNULAR
Possible match (shared part number)Naval Ship Systems Command
2915-00-805-6497403391POSSIBLE MATCH
CORE ASSEMBLY,FUEL
Possible match (shared part number)Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
6920-01-206-635740339-1POSSIBLE MATCH
FAIRING,AFTERBODY
Possible match (shared part number)Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
403391
3/2Design control — primary reference
U.S. Government activity
Related Parts
3110-00-554-5238POSSIBLE MATCH
BEARING,BALL,ANNULAR
6206ZMAX
2915-00-805-6497POSSIBLE MATCH
CORE ASSEMBLY,FUEL
403391
6920-01-206-6357POSSIBLE MATCH
FAIRING,AFTERBODY
40339-1
Frequently Asked Questions
What is NSN 1270-00-321-2473?
NSN 1270-00-321-2473 is a Gearcase Assembly, classified under FSC 1270, Aircraft Gunnery Fire Control Components. Status: active.
What NSN replaces 1270-00-321-2473?
3 possible matches (shared part number, not a government interchangeability claim): 3110-00-554-5238, 2915-00-805-6497, 6920-01-206-6357. Verify interchangeability with system specifications before substitution.
Is NSN 1270-00-321-2473 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 1270-00-321-2473?
NSN 1270-00-321-2473 has DEMIL Code B. 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.