The Coupler,directional, cataloged under National Stock Number 5985-01-138-9880, 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 Naval Sea Systems Command. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 7 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-138-9880 |
| Primary Part Number | 5347690 |
| Item Name | Coupler,directional |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Terminal Fitting Controlling Agency | MILITARY SPECIFICATION |
| Usage Design | MAIN LINE TERMINAL FITTING |
| Identifying Number | TERMINAL FITTING PART NO. M3922/59-008 |
| Design Type | UNIDIRECTIONAL |
| Radio Frequency Rating | 10.25 GIGAHERTZ MINIMUM AND 10.5 GIGAHERTZ MAXIMUM |
| 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 |
|---|---|
| 90XT729 | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| 5347690 | Microlab/fxr Llc (USA) |
| 5347690 PRIMARY | Naval Sea Systems Command (USA) |
| 5347690 | Microtech Inc Dba Microtech Inc (USA) |
| 5347690 | Axillon Aerospace (baltimore) Inc. (USA) |
| 5347690 | Waveline Inc (USA) |
| 5347690 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 5347690 | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
NSN 5985-01-138-9880 is a Coupler,directional, manufactured by Naval Sea Systems Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-138-9880 has 7 manufacturer part numbers on file: 90XT729 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc), 5347690 (Microlab/fxr Llc), 5347690 (Naval Sea Systems Command), 5347690 (Microtech Inc Dba Microtech Inc), 5347690 (Axillon Aerospace (baltimore) Inc.) and 2 more.
1 possible match (shared part number, not a government interchangeability claim): 5310-01-692-7877. Verify interchangeability with system specifications before substitution.
Key specifications for 5347690: Overall Height: 2.630 INCHES NOMINAL IN; Terminal Fitting Controlling Agency: MILITARY SPECIFICATION; Usage Design: MAIN LINE TERMINAL FITTING; Identifying Number: TERMINAL FITTING PART NO. M3922/59-008. 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.
NSN 5985-01-138-9880 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.