The Waveguide Assembly, cataloged under National Stock Number 5985-00-072-8550, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 29 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-072-8550 |
| Primary Part Number | 2269558 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.872 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Height | 3.593 INCHES NOMINAL IN |
| Flange Quantity | 2 |
| Bend Angle in Deg | 90.0 ALL BENDS H-PLANE |
| Style Designator | DOUBLE BEND TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 1.872 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 40.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Connecting Hole Diameter | 0.203 INCHES MINIMUM AND 0.209 INCHES MAXIMUM SECOND FLANGE SECOND CONNECTION FACILITY IN |
| Waveguide Center to Center Distance | 6.215 INCHES MINIMUM AND 6.235 INCHES MAXIMUM IN |
| Flange Inside Width | 1.872 INCHES NOMINAL ALL FLANGES IN |
| Thread Direction | RIGHT-HAND SECOND FLANGE FIRST CONNECTION FACILITY |
| Thread Direction | RIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITY |
| Nominal Thread Size | 0.190 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Nominal Thread Size | 0.190 INCHES SECOND FLANGE FIRST CONNECTION FACILITY IN |
| Waveguide Outside Height | 1.185 INCHES NOMINAL IN |
| Waveguide Outside Width | 2.185 INCHES NOMINAL IN |
| Flange Depth | 0.594 INCHES NOMINAL ALL FLANGES IN |
| Surface Treatment | ENAMEL ALL TUBING SEGMENT OUTSIDE SURFACES |
| Waveguide Inside Height | 0.872 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE SINGLE CONNECTION FACILITY |
| Thread Class | 2B SECOND FLANGE FIRST CONNECTION FACILITY |
| Material | ALUMINUM ALLOY ALL TUBING SEGMENT |
| Material | ALUMINUM ALLOY ALL TUBING JACKET |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 1 UNTHREADED HOLE(S) SECOND FLANGE SECOND CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 7 THREADED HOLE(S) SECOND FLANGE FIRST CONNECTION FACILITY |
| 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 |
|---|---|
| 2269558 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1024594 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5985-00-072-8550 is a Waveguide Assembly, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-072-8550 has 1 manufacturer part number on file: 2269558 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 5945-00-984-1796. Verify interchangeability with system specifications before substitution.
Key specifications for 2269558: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.872 INCHES NOMINAL ALL FLANGES IN; Waveguide Height: 3.593 INCHES NOMINAL IN; Flange Quantity: 2. 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 5985-00-072-8550 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.