The Waveguide Assembly, cataloged under National Stock Number 5985-00-264-7478, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-264-7478 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| Flange Inside Height | 0.628 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Height | 0.497 INCHES NOMINAL FIRST FLANGE IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Flange Inside Diameter | 1.383 INCHES NOMINAL FIRST FLANGE IN |
| Waveguide Inside Width | 1.122 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, ELLIPTICAL EXTERNAL, ELLIPTICAL |
| Flange Outside Height | 1.875 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Height | 1.875 INCHES NOMINAL FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.169 INCHES NOMINAL SECOND FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 1.122 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 1.253 INCHES NOMINAL SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE SINGLE CONNECTION FACILITY |
| Waveguide Length | 4.000 FEET NOMINAL FT |
| Nominal Thread Size | 0.164 INCHES FIRST FLANGE SINGLE CONNECTION FACILITY IN |
| Waveguide Outside Height | 0.625 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.250 INCHES NOMINAL IN |
| Flange Depth | 0.625 INCHES NOMINAL FIRST FLANGE IN |
| Flange Depth | 0.438 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 1.875 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 1.875 INCHES NOMINAL FIRST FLANGE IN |
| Surface Treatment | SILVER SINGLE TUBING SEGMENT INSIDE SURFACES |
| Precious Material and Location | TUBING INSIDE SURFACE SILVER |
| Waveguide Inside Height | 0.497 INCHES NOMINAL IN |
| Material | RUBBER SINGLE TUBING JACKET |
| Material | COPPER ALLOY ALL FLANGE |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| CG733U | 3/2 Design control — primary reference U.S. Government activity |
| MILW287 | 4/1 Identification reference U.S. Government activity |
NSN 5985-00-264-7478 is a Waveguide Assembly, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5985-00-543-1457, 5985-00-699-2371, 5985-00-957-0747. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-264-7478: Flange Inside Height: 0.628 INCHES NOMINAL SECOND FLANGE IN; Flange Inside Height: 0.497 INCHES NOMINAL FIRST FLANGE IN; Flange Quantity: 2; Precious Material: SILVER. 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 5985-00-264-7478 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.