The Coupler,rotary Asse, cataloged under National Stock Number 5985-00-421-9150, 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 Fisica Applied Technologies, Inc. Div Randtron Antenna Systems. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 5985-00-421-9150 |
| Primary Part Number | 220400-2 |
| Item Name | Coupler,rotary Asse |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Fisica Applied Technologies, Inc. Div Randtron Antenna Systems |
| Status | ACTIVE |
| General Characteristics Item Description | PART OF AN/APA171,USED ON EZC AIRCRAFT |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SOURCE CONTROL DWG NO. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 123SCAV5072-3 | Northrop Grumman Systems Corporation (USA) |
| 220400-2 | Fisica Applied Technologies, Inc. Div Randtron Antenna Systems (USA) |
| Reference | Meaning |
|---|---|
| 220400-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple |
| CU1929APA171 | 5/3 Secondary reference U.S. Government activity |
| 220400-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation Div Es Defensive Systems Division |
| 123SCAV5072-1 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 123SCAV5072-1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
NSN 5985-00-421-9150 is a Coupler,rotary Asse, manufactured by Fisica Applied Technologies, Inc. Div Randtron Antenna Systems, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-421-9150 has 2 manufacturer part numbers on file: 123SCAV5072-3 (Northrop Grumman Systems Corporation), 220400-2 (Fisica Applied Technologies, Inc. Div Randtron Antenna Systems).
3 possible matches (shared part number, not a government interchangeability claim): 6530-01-004-8969, 4810-01-369-8642, 4810-01-373-2514. Verify interchangeability with system specifications before substitution.
Key specifications for 220400-2: General Characteristics Item Description: PART OF AN/APA171,USED ON EZC AIRCRAFT; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SOURCE CONTROL DWG NO.. 2 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 5985-00-421-9150 has DEMIL Code Q. 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.