The Coupler,rotary,radio Frequency, cataloged under National Stock Number 5985-00-400-8153, 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. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-400-8153 |
| Primary Part Number | 1881130 |
| Item Name | Coupler,rotary,radio Frequency |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Overall Diameter | 2.781 INCHES NOMINAL IN |
| Radio Frequency Rating | 9.345 GIGAHERTZ MINIMUM AND 9.405 GIGAHERTZ MAXIMUM |
| Unit Type | WAVEGUIDE |
| Mounting Configuration | FOUR 0.166 IN. DIA MTG HOLES ON 1.634 IN. BY 1.634 IN. MTG CENTERS IN |
| Material | ALUMINUM AND STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1881130 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1405A00 | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
| 1405A00 | 5/1 Secondary reference Axillon Aerospace (baltimore) Inc. |
NSN 5985-00-400-8153 is a Coupler,rotary,radio Frequency, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-400-8153 has 1 manufacturer part number on file: 1881130 (Northrop Grumman Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-185-7286. Verify interchangeability with system specifications before substitution.
Key specifications for 1881130: Overall Diameter: 2.781 INCHES NOMINAL IN; Radio Frequency Rating: 9.345 GIGAHERTZ MINIMUM AND 9.405 GIGAHERTZ MAXIMUM; Overall Length: 13.711 INCHES NOMINAL IN; Unit Type: WAVEGUIDE. 5 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 5985-00-400-8153 has DEMIL Code D. 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.