The Coupling,waveguide, cataloged under National Stock Number 5985-01-018-2368, 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 Rfs Technologies, Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-018-2368 |
| Primary Part Number | 399271 |
| Item Name | Coupling,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Rfs Technologies, Inc. |
| Status | ACTIVE |
| Style Designator | ROUND |
| Coupling Outside Diameter | 6.250 INCHES NOMINAL IN |
| Material | ALUMINUM SINGLE FLANGE |
| Coupling Overall Depth | 4.750 INCHES NOMINAL IN |
| 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 |
|---|---|
| 399271 PRIMARY | Rfs Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 191-284 | 5/9 Secondary reference Rfs Technologies, Inc. |
| PA139-71-1 | 5/9 Secondary reference U.S. Government activity |
| 191-284 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-018-2368 is a Coupling,waveguide, manufactured by Rfs Technologies, Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-018-2368 has 1 manufacturer part number on file: 399271 (Rfs Technologies, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-049-9691. Verify interchangeability with system specifications before substitution.
Key specifications for 399271: Style Designator: ROUND; Coupling Outside Diameter: 6.250 INCHES NOMINAL IN; Material: ALUMINUM SINGLE FLANGE; Coupling Overall Depth: 4.750 INCHES NOMINAL IN. 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 5985-01-018-2368 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.