NSN 5821-01-438-3684 · NIIN 014383684 · Part number 185A540-1
Lockheed Martin Corporation Div Rotary and Mission Systems · FSC 5821 — Radio and Television Communication Equipment, Airborne · FSG 58 — Communication, Detection, and Coherent Radiation Equipment · CAGE 03640
Government record, cited
NSN 5821-01-438-3684 — this item is cataloged by the U.S. Government under National Stock Number 5821-01-438-3684. Manufacturer of record part number: 185A540-1.
Also searched as5821-01-438-3684 ·
5821014383684 ·
NIIN 014383684 ·
01-438-3684 ·
FSC 5821 Radio and Television Communication Equipment, Airborne · CAGE 03640 · 185A540-1
Nearby stock numbers← 5821-01-438-1046 Receiver Subassembly, Radio
·
5821-01-438-6558 Monitor, Receiver-Transmitter, Rad →
Features
Receiver Subassembly,radio — FSC 5821
Criticality Code Justification: FEAT
Nuclear Hardness Critical Feature: HARDENED
1 manufacturer part number on file
Manufacturer of record: Lockheed Martin Corporation Div Rotary and Mission Systems
Identification
NSN: 5821-01-438-3684
NIIN: 014383684
FSC: 5821 — Radio and Television Communication Equipment, Airborne
FSG: 58 — Communication, Detection, and Coherent Radiation Equipment
Primary part number: 185A540-1
Manufacturer: Lockheed Martin Corporation Div Rotary and Mission Systems
General Description
The Receiver Subassembly,radio, cataloged under National Stock Number 5821-01-438-3684, is classified within Federal Supply Class 5821 (Radio and Television Communication Equipment, Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 2 specifications, 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. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5821-01-438-3684
Primary Part Number
185A540-1
Item Name
Receiver Subassembly,radio
FSC / FSG
5821 / 58 — Radio and Television Communication Equipment, Airborne
Manufacturer
Lockheed Martin Corporation Div Rotary and Mission Systems
Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
No interchangeability data on file.
Other items in FSC 5821 — Radio and Television Communication Equipment, Airborne
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5821-00-001-1888
5821-00-001-1888 · Item name not on file
5821-00-001-1893
TUNER,RADIO FREQUENCY
5821-00-001-1894
TUNER,RADIO FREQUENCY
5821-00-001-1895
TUNER,RADIO FREQUENCY
5821-00-001-1896
5821-00-001-1896 · Item name not on file
5821-00-001-1897
5821-00-001-1897 · Item name not on file
5821-00-001-1898
TUNER,RADIO FREQUENCY
5821-00-001-2755
MEMORY ASSEMBLY,RADIO SET
Frequently Asked Questions
What is NSN 5821-01-438-3684?
NSN 5821-01-438-3684 is a Receiver Subassembly,radio, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5821, Radio and Television Communication Equipment, Airborne. Status: active.
What part numbers are listed for NSN 5821-01-438-3684?
NSN 5821-01-438-3684 has 1 manufacturer part number on file: 185A540-1 (Lockheed Martin Corporation Div Rotary and Mission Systems).
What are the specifications of 185A540-1?
Key specifications for 185A540-1: Criticality Code Justification: FEAT; Special Features: H.C.I. AND E.S.D. CRITICAL UNIT; End Item Identification: PACER SPECIAL; Nuclear Hardness Critical Feature: HARDENED. 2 specifications are documented in the U.S. Government catalog.
Is NSN 5821-01-438-3684 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 5821-01-438-3684?
NSN 5821-01-438-3684 has DEMIL Code C. 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.