The Horn,waveguide, cataloged under National Stock Number 5985-00-557-8259, 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 Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems. Government technical data includes 10 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 | 5985-00-557-8259 |
| Primary Part Number | 185N1625-1 |
| Item Name | Horn,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems |
| Status | ACTIVE |
| Connection Method | FLANGE |
| Throat Depth | 4.000 INCHES NOMINAL IN |
| Mouth Length | 13.840 INCHES NOMINAL IN |
| Accommodated Conductor Type | WAVEGUIDE |
| Mouth Width | 8.500 INCHES NOMINAL IN |
| Frequency Range Rating | +1250.0 TO 1350.0 MEGAHERTZ |
| Throat Width | 5.440 INCHES NOMINAL IN |
| Surface Treatment | PHOSPHATE INSIDE |
| Throat Length | 8.680 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 185N1625-1 PRIMARY | Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems (USA) |
| 185N1625-1 | Goodyear Tire and Rubber Co the (USA) |
NSN 5985-00-557-8259 is a Horn,waveguide, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-557-8259 has 2 manufacturer part numbers on file: 185N1625-1 (Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems), 185N1625-1 (Goodyear Tire and Rubber Co the).
Key specifications for 185N1625-1: Overall Height: 22.500 INCHES NOMINAL IN; Connection Method: FLANGE; Throat Depth: 4.000 INCHES NOMINAL IN; Mouth Length: 13.840 INCHES NOMINAL IN. 10 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 5985-00-557-8259 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.