The Coupler,directional, cataloged under National Stock Number 5985-00-421-0811, 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 Microlab/fxr Llc. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-421-0811 |
| Primary Part Number | HM20N |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microlab/fxr Llc |
| Status | ACTIVE |
| Terminal Fitting Controlling Agency | MICROLAB FXR DIVISION; MICROLAB FXR DIVISION |
| Usage Design | MAIN LINE AND SECONDARY LINE TERMINAL FITTING |
| Identifying Number | TERMINAL FITTING TYPE N MALE AND FEMALE; TYPE N FEMALE |
| Design Type | UNIDIRECTIONAL |
| Radio Frequency Rating | 0.0 GIGAHERTZ MINIMUM AND 4.0 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 |
|---|---|
| HM20N PRIMARY | Microlab/fxr Llc (USA) |
NSN 5985-00-421-0811 is a Coupler,directional, manufactured by Microlab/fxr Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-421-0811 has 1 manufacturer part number on file: HM20N (Microlab/fxr Llc).
Key specifications for HM20N: Terminal Fitting Controlling Agency: MICROLAB FXR DIVISION; MICROLAB FXR DIVISION; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING; Identifying Number: TERMINAL FITTING TYPE N MALE AND FEMALE; TYPE N FEMALE; Design Type: UNIDIRECTIONAL. 6 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.