The Coupler,directional, cataloged under National Stock Number 5985-01-370-2099, 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 Lockheed Martin Corporation Div Rms. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-370-2099 |
| Primary Part Number | 1209252-201 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Power Loss in Decibels | 0.4 |
| Design Type | BIDIRECTIONAL |
| Radio Frequency Rating | 1.2 GIGAHERTZ MINIMUM AND 1.4 GIGAHERTZ MAXIMUM |
| Unit Type | COAXIAL LINE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1209252-201 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1209252-201 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| 27509 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-01-370-2099 is a Coupler,directional, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-370-2099 has 1 manufacturer part number on file: 1209252-201 (Lockheed Martin Corporation Div Rms).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-371-1306. Verify interchangeability with system specifications before substitution.
Key specifications for 1209252-201: Overall Height: 0.400 INCHES MAXIMUM IN; Power Loss in Decibels: 0.4; Design Type: BIDIRECTIONAL; Radio Frequency Rating: 1.2 GIGAHERTZ MINIMUM AND 1.4 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.
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.