The Waveguide Assembly, cataloged under National Stock Number 5985-01-199-1415, 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 29 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-199-1415 |
| Primary Part Number | 5187404 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| FSC Application Data | RADAR EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.394 INCHES MINIMUM SECOND FLANGE IN |
| Flange Inside Height | 0.309 INCHES MINIMUM AND 0.313 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.07 |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 1.360 INCHES MINIMUM AND 1.420 INCHES MAXIMUM IN |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.620 INCHES MINIMUM AND 0.625 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 10.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.298 INCHES MINIMUM AND 1.328 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Outside Height | 1.297 INCHES MINIMUM AND 1.327 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.144 INCHES MINIMUM ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 0.705 INCHES MINIMUM SECOND FLANGE IN |
| Flange Inside Width | 0.620 INCHES MINIMUM AND 0.624 INCHES MAXIMUM FIRST FLANGE IN |
| Waveguide Outside Height | 0.388 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN |
| Waveguide Outside Width | 0.699 INCHES MINIMUM AND 0.705 INCHES MAXIMUM IN |
| Flange Depth | 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Depth | 0.360 INCHES MINIMUM AND 0.390 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Outside Width | 1.298 INCHES MINIMUM AND 1.328 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Outside Width | 1.297 INCHES MINIMUM AND 1.327 INCHES MAXIMUM FIRST FLANGE IN |
| Waveguide Inside Height | 0.309 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Material | COPPER ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES SINGLE CONNECTION FACILITY |
| Flange Style | COVER TYPE FIRST FLANGE |
| Flange Style | COVER TYPE SECOND FLANGE |
| Waveguide Longer Offset Distance | 2.660 INCHES MINIMUM AND 2.720 INCHES MAXIMUM 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 |
|---|---|
| 5187404 PRIMARY | Naval Sea Systems Command (USA) |
| 5187404 | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5187404 | 5/9 Secondary reference 3dbm Co Inc Waveguide Group |
| 5985PL1293721 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 5187404 | 5/9 Secondary reference Astro Microwave Inc |
NSN 5985-01-199-1415 is a Waveguide Assembly, manufactured by Naval Sea Systems Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-199-1415 has 2 manufacturer part numbers on file: 5187404 (Naval Sea Systems Command), 5187404 (Frontgrade Technologies Inc.).
Key specifications for 5187404: FSC Application Data: RADAR EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.394 INCHES MINIMUM SECOND FLANGE IN; Flange Inside Height: 0.309 INCHES MINIMUM AND 0.313 INCHES MAXIMUM FIRST FLANGE IN. 29 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 5985-01-199-1415 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.