The Waveguide Assembly, cataloged under National Stock Number 5985-01-026-7642, 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 27 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-026-7642 |
| Primary Part Number | 2897218-3 |
| 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 |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | BELLOWS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.397 INCHES MINIMUM AND 0.403 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Voltage Standing Wave Ratio | 1.10 |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 2.056 INCHES NOMINAL IN |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.900 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 15.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.578 INCHES MINIMUM AND 1.608 INCHES MAXIMUM ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.193 INCHES MINIMUM AND 0.199 INCHES MAXIMUM ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 0.897 INCHES MINIMUM AND 0.903 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Outside Height | 0.530 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN |
| Waveguide Outside Width | 1.120 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN |
| Flange Depth | 0.290 INCHES MINIMUM ALL FLANGES IN |
| Flange Outside Width | 2.078 INCHES MINIMUM AND 2.108 INCHES MAXIMUM ALL FLANGES IN |
| Surface Treatment | SILVER SINGLE TUBING SEGMENT AND FLANGE ALL SURFACES |
| Precious Material and Location | TUBING INTERNALSURFACES SILVER |
| Waveguide Inside Height | 0.400 INCHES NOMINAL IN |
| Material | COPPER ALLOY ALL TUBING SEGMENT AND FLANGE |
| Material | RUBBER SINGLE TUBING JACKET |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | CONTACT TYPE ALL FLANGES |
| Waveguide Longer Offset Distance | 8.000 INCHES NOMINAL 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 |
|---|---|
| TS641499 | Microwave Engineering Corporation (USA) |
| 2897218-3 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 223086 | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| 46652 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-01-026-7642 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 5985-01-026-7642 has 3 manufacturer part numbers on file: TS641499 (Microwave Engineering Corporation), 2897218-3 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 223086 (Microtech Inc Dba Microtech Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4320-01-141-2826, 6515-01-679-1069, 4235-01-690-1961. Verify interchangeability with system specifications before substitution.
Key specifications for 2897218-3: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: BELLOWS SINGLE TUBING SEGMENT; Flange Inside Height: 0.397 INCHES MINIMUM AND 0.403 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 2. 27 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 5985-01-026-7642 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.