The Waveguide Assembly, cataloged under National Stock Number 5985-00-686-8078, 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 Westinghouse Electric Corp. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-686-8078 |
| Primary Part Number | 478D208G01 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| FSC Application Data | MULTIAPPLICATION |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Quantity | 3 |
| Waveguide Outside Diameter | 3.250 INCHES NOMINAL IN |
| Precious Material | SILVER |
| Bend Angle in Deg | 90.0 ALL BENDS E-PLANE |
| Style Designator | CORNER TYPE |
| Waveguide Offset Distance | 4.820 INCHES NOMINAL IN |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Diameter | 3.027 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, ROUND EXTERNAL, ROUND |
| Flange Connecting Hole Diameter | 0.406 INCHES NOMINAL SECOND FLANGE ALL CONNECTION FACILITIES IN |
| Flange Connecting Hole Diameter | 0.406 INCHES NOMINAL THIRD FLANGE ALL CONNECTION FACILITIES IN |
| Flange Depth | 3.203 INCHES NOMINAL SECOND FLANGE IN |
| Surface Treatment | SILVER ALL TUBING SEGMENT INSIDE SURFACES |
| Precious Material and Location | FLANGE AND TUBING SEGMENT SURFACES SILVER |
| Flange Connecting Facility and Quantity | 6 QUICK DISCONNECT FASTENERS FIRST FLANGE ALL CONNECTION FACILITIES |
| Flange Connecting Facility and Quantity | 6 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES |
| Flange Connecting Facility and Quantity | 6 UNTHREADED HOLE(S) THIRD FLANGE ALL CONNECTION FACILITIES |
| Flange Outside Diameter | 4.063 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Diameter | 5.219 INCHES NOMINAL THIRD FLANGE IN |
| Flange Outside Diameter | 7.187 INCHES NOMINAL SECOND FLANGE IN |
| Flange Style | CHOKE TYPE ALL FLANGES |
| Waveguide Longer Offset Distance | 6.220 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 478D208G01 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 478D208G01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-686-8078 is a Waveguide Assembly, manufactured by Westinghouse Electric Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-686-8078 has 1 manufacturer part number on file: 478D208G01 (Westinghouse Electric Corp).
Key specifications for 478D208G01: FSC Application Data: MULTIAPPLICATION; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Quantity: 3; Waveguide Outside Diameter: 3.250 INCHES NOMINAL IN. 24 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.
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.