The Horn,waveguide, cataloged under National Stock Number 5985-01-031-1980, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-031-1980 |
| Item Name | Horn,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| FSC Application Data | RADAR EQUIPMENT |
| Connection Method | WAVEGUIDE FLANGE |
| Mouth Length | 1.408 INCHES MINIMUM AND 1.528 INCHES MAXIMUM IN |
| Accommodated Conductor Type | WAVEGUIDE |
| Mouth Width | 1.096 INCHES MINIMUM AND 1.216 INCHES MAXIMUM IN |
| Frequency Range Rating | +18.0 TO 26.5 GIGAHERTZ |
| Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 663-15 | 5/9 Secondary reference U.S. Government activity |
| 42-441-6 | 3/2 Design control — primary reference U.S. Government activity |
| 638 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-031-1980 is a Horn,waveguide, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5920-01-156-8705, 4720-01-323-4275, 5950-01-518-4253. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-01-031-1980: Overall Height: 1.096 INCHES MINIMUM AND 1.216 INCHES MAXIMUM IN; FSC Application Data: RADAR EQUIPMENT; Connection Method: WAVEGUIDE FLANGE; Mouth Length: 1.408 INCHES MINIMUM AND 1.528 INCHES MAXIMUM IN. 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 5985-01-031-1980 has DEMIL Code Q. 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.