The Base,mast, cataloged under National Stock Number 5985-00-221-5566, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-221-5566 |
| Primary Part Number | 114D003 |
| Item Name | Base,mast |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| Status | ACTIVE |
| FSC Application Data | RADIO SET,COMMUNICATION EXCEPT AIRBORNE |
| Mounting Facility Quantity | 2 |
| Mounting Facility Circle Radius | 3.875 INCHES NOMINAL IN |
| Mounting Method | UNTHREADED HOLE(S) AND BINDING POST AND THREADED RETAINER |
| Mounting Hole Diameter | 0.437 INCHES NOMINAL IN |
| Basic Shape Style | IRREGULAR |
| Surface Treatment | ENAMEL |
| Material | CERAMIC AND STEEL |
| Mounting Hole Type | PLAIN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 114D003 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA) |
| Reference | Meaning |
|---|---|
| 71-699CTYPEMP47A | 5/2 Secondary reference U.S. Government activity |
| SCD11221B | 5/2 Secondary reference U.S. Government activity |
| MP47 | 5/2 Secondary reference U.S. Government activity |
| SC-D-11221 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-221-5566 is a Base,mast, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-221-5566 has 1 manufacturer part number on file: 114D003 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple).
1 possible match (shared part number, not a government interchangeability claim): 3130-00-278-6869. Verify interchangeability with system specifications before substitution.
Key specifications for 114D003: FSC Application Data: RADIO SET,COMMUNICATION EXCEPT AIRBORNE; Mounting Facility Quantity: 2; Mounting Facility Circle Radius: 3.875 INCHES NOMINAL IN; Mounting Method: UNTHREADED HOLE(S) AND BINDING POST AND THREADED RETAINER. 9 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5985-00-221-5566 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.