The Waveguide Assembly, cataloged under National Stock Number 5985-00-299-0287, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-299-0287 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Tubing Wall Construction Style | STRAIGHT SEAM SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.620 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Outside Diameter | 3.179 INCHES NOMINAL IN |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE ALL TUBING SEGMENT |
| Waveguide Inside Diameter | 2.910 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, ROUND EXTERNAL, ROUND |
| Thread Direction | RIGHT-HAND ALL FLANGES SINGLE CONNECTION FACILITY |
| Waveguide Length | 5.120 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES ALL FLANGES SINGLE CONNECTION FACILITY IN |
| Flange Depth | 0.900 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 3.027 INCHES NOMINAL ALL FLANGES IN |
| Surface Treatment | SILVER ALL FLANGE INSIDE SURFACES |
| Surface Treatment | GOLD ALL FLANGE OUTSIDE SURFACES |
| Thread Class | 2A ALL FLANGES SINGLE CONNECTION FACILITY A |
| Material | COPPER ALLOY ALL FLANGE |
| Flange Outside Diameter | 5.440 INCHES NOMINAL ALL FLANGES IN |
| Thread Series Designator | UNF ALL FLANGES SINGLE CONNECTION FACILITY |
| Flange Style | COVER TYPE ALL FLANGES |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| SMD569734 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-299-0287 is a Waveguide Assembly, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
Key specifications for 5985-00-299-0287: Tubing Wall Construction Style: STRAIGHT SEAM SINGLE TUBING SEGMENT; Flange Inside Height: 0.620 INCHES NOMINAL ALL FLANGES IN; Waveguide Outside Diameter: 3.179 INCHES NOMINAL IN; Style Designator: STRAIGHT TYPE. 19 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 5985-00-299-0287 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.