The Coupler,directional, cataloged under National Stock Number 5985-01-111-3405, 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 Naval Sea Systems Command. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-111-3405 |
| Primary Part Number | 5381501 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Usage Design | MAIN LINE AND SECONDARY LINE TERMINAL FITTING |
| Design Type | BIDIRECTIONAL |
| Radio Frequency Rating | 8.9 GIGAHERTZ MINIMUM AND 9.5 GIGAHERTZ MAXIMUM |
| Unit Type | COAXIAL LINE AND WAVEGUIDE |
| 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 |
|---|---|
| 1205019 | Lockheed Martin Corporation Div Rms (USA) |
| 5381501 | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| 5381501 PRIMARY | Naval Sea Systems Command (USA) |
| 5381501 | Axillon Aerospace (baltimore) Inc. (USA) |
| 5381501 | Waveline Inc (USA) |
| Reference | Meaning |
|---|---|
| 5381501 | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
| 1205019 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5985-01-111-3405 is a Coupler,directional, manufactured by Naval Sea Systems Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-111-3405 has 5 manufacturer part numbers on file: 1205019 (Lockheed Martin Corporation Div Rms), 5381501 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc), 5381501 (Naval Sea Systems Command), 5381501 (Axillon Aerospace (baltimore) Inc.), 5381501 (Waveline Inc).
Key specifications for 5381501: Overall Height: 1.688 INCHES NOMINAL IN; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING; Design Type: BIDIRECTIONAL; Radio Frequency Rating: 8.9 GIGAHERTZ MINIMUM AND 9.5 GIGAHERTZ MAXIMUM. 4 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 5985-01-111-3405 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.