The Coupler,directional, cataloged under National Stock Number 5985-00-031-3635, 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 Northrop Grumman Systems Corporation Dba Electronic Systems. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-031-3635 |
| Primary Part Number | 990C089H02 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Systems Corporation Dba Electronic Systems |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Terminal Fitting Controlling Agency | WESTINGHOUSE ELECTRIC CORP |
| Usage Design | MAIN LINE AND SECONDARY LINE TERMINAL FITTING |
| Power Loss in Decibels | 30.0 |
| Identifying Number | TERMINAL FITTING TYPE N; PART NO. MRC750C3; PART NO. MRC750C2 |
| Design Type | BIDIRECTIONAL |
| Unit Type | 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 |
|---|---|
| 990C089H02 PRIMARY | Northrop Grumman Systems Corporation Dba Electronic Systems (USA) |
| R90B3N | Microwave Engineering Corporation (USA) |
NSN 5985-00-031-3635 is a Coupler,directional, manufactured by Northrop Grumman Systems Corporation Dba Electronic Systems, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-031-3635 has 2 manufacturer part numbers on file: 990C089H02 (Northrop Grumman Systems Corporation Dba Electronic Systems), R90B3N (Microwave Engineering Corporation).
Key specifications for 990C089H02: Overall Height: 3.590 INCHES MAXIMUM IN; FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Terminal Fitting Controlling Agency: WESTINGHOUSE ELECTRIC CORP; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING. 7 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 5985-00-031-3635 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.