The Coupler,directional, cataloged under National Stock Number 5985-01-199-9181, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-199-9181 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Usage Design | MAIN LINE AND SECONDARY LINE TERMINAL FITTING |
| Power Loss in Decibels | 10.0 |
| Design Type | BIDIRECTIONAL |
| Unit Type | COAXIAL LINE OR TRANSMISSION LINE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 25057 | 5/9 Secondary reference U.S. Government activity |
| RME-U-0125 | 5/9 Secondary reference Rme Filters Inc |
| 170221-1 | 5/9 Secondary reference Advanced Technical Materials, Inc. Dba a T M |
| 170221-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-199-9181 is a Coupler,directional, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-246-7418, 5340-01-384-4631, 4720-01-540-6265. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-199-9181: Overall Height: 0.370 INCHES NOMINAL IN; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING; Power Loss in Decibels: 10.0; Design Type: BIDIRECTIONAL. 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 5985-01-199-9181 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.