NSN 4921-01-481-6639 · NIIN 014816639 · Part number 3322805-014-101
Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems · FSC 4921 — Torpedo Maintenance, Repair, and Checkout Specialized Equipment · FSG 49 — Maintenance and Repair Shop Equipment · CAGE 25500
Government record, cited
NSN 4921-01-481-6639 — this item is cataloged by the U.S. Government under National Stock Number 4921-01-481-6639. Manufacturer of record part number: 3322805-014-101.
Also searched as4921-01-481-6639 ·
4921014816639 ·
NIIN 014816639 ·
01-481-6639 ·
FSC 4921 Torpedo Maintenance, Repair, and Checkout Specialized Equipment · CAGE 25500 · 3322805-014-101
Manufacturer of record: Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems
Identification
NSN: 4921-01-481-6639
NIIN: 014816639
FSC: 4921 — Torpedo Maintenance, Repair, and Checkout Specialized Equipment
FSG: 49 — Maintenance and Repair Shop Equipment
Primary part number: 3322805-014-101
Manufacturer: Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems
General Description
The Heater Duct Assy, cataloged under National Stock Number 4921-01-481-6639, is classified within Federal Supply Class 4921 (Torpedo Maintenance, Repair, and Checkout Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems (USA)
No interchangeability data on file.
Other items in FSC 4921 — Torpedo Maintenance, Repair, and Checkout Specialized Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4921-00-001-6500
4921-00-001-6500 · Item name not on file
4921-00-003-1270
4921-00-003-1270 · Item name not on file
4921-00-003-1271
4921-00-003-1271 · Item name not on file
4921-00-003-1273
TEST SET SUBASSEMBLY,TORPEDO COM
4921-00-003-1274
4921-00-003-1274 · Item name not on file
4921-00-003-1275
4921-00-003-1275 · Item name not on file
4921-00-003-1276
4921-00-003-1276 · Item name not on file
4921-00-003-1278
4921-00-003-1278 · Item name not on file
Frequently Asked Questions
What is NSN 4921-01-481-6639?
NSN 4921-01-481-6639 is a Heater Duct Assy, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems, classified under FSC 4921, Torpedo Maintenance, Repair, and Checkout Specialized Equipment. Status: active.
What part numbers are listed for NSN 4921-01-481-6639?
NSN 4921-01-481-6639 has 1 manufacturer part number on file: 3322805-014-101 (Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems).
Is NSN 4921-01-481-6639 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.