The Coupler,directional, cataloged under National Stock Number 5985-00-461-0040, 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 Watkins Johnson Co. Government technical data includes 9 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-461-0040 |
| Primary Part Number | 643567-001 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Watkins Johnson Co |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Terminal Fitting Controlling Agency | OMNI SPECTRA INC; OMI SPECTRA INC |
| Unpackaged Unit Weight | 1.900 OUNCES NOMINAL OZ |
| Usage Design | MAIN LINE TERMINAL FITTING |
| Power Loss in Decibels | 10.0 |
| Identifying Number | TERMINAL FITTING TY OSM; TY NO. 20020 |
| Design Type | BIDIRECTIONAL |
| Radio Frequency Rating | 1.0 GIGAHERTZ MINIMUM AND 2.0 GIGAHERTZ MAXIMUM |
| Unit Type | TRANSMISSION 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 |
|---|---|
| 643567-001 PRIMARY | Watkins Johnson Co (USA) |
| Reference | Meaning |
|---|---|
| 7912006-01 | C/1 Advisory reference — outside the item-of-supply concept L3 Technologies, Inc. Dba Communication Systems-West Div Communication Systems-West |
| 2023-6122-10 | 5/9 Secondary reference U.S. Government activity |
| 70063-10-8752 | 5/9 Secondary reference U.S. Government activity |
| 643567-001 | 5/9 Secondary reference Watkins-Johnson Co |
NSN 5985-00-461-0040 is a Coupler,directional, manufactured by Watkins Johnson Co, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-461-0040 has 1 manufacturer part number on file: 643567-001 (Watkins Johnson Co).
Key specifications for 643567-001: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Terminal Fitting Controlling Agency: OMNI SPECTRA INC; OMI SPECTRA INC; Unpackaged Unit Weight: 1.900 OUNCES NOMINAL OZ; Usage Design: MAIN LINE TERMINAL FITTING. 9 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.