The Waveguide Assembly, cataloged under National Stock Number 5985-00-177-6786, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-177-6786 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 0.394 INCHES MINIMUM AND 0.396 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Quantity | 2 |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 0.817 INCHES NOMINAL IN |
| Flexibility | RIGID ALL TUBING SEGMENT |
| Waveguide Inside Width | 0.619 INCHES MINIMUM AND 0.624 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.298 INCHES MINIMUM AND 1.328 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.144 INCHES MINIMUM AND 0.147 INCHES MAXIMUM FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 0.705 INCHES MINIMUM AND 0.707 INCHES MAXIMUM FIRST FLANGE IN |
| Waveguide Outside Height | 0.388 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN |
| Waveguide Outside Width | 0.699 INCHES MINIMUM AND 0.705 INCHES MAXIMUM IN |
| Flange Depth | 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Outside Width | 1.298 INCHES MINIMUM AND 1.328 INCHES MAXIMUM FIRST FLANGE IN |
| Surface Treatment | CHROMATE AND PRIMER AND ENAMEL ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES |
| Flange Style | COVER TYPE FIRST FLANGE |
| Waveguide Longer Offset Distance | 1.100 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 |
| Reference | Meaning |
|---|---|
| 654459-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-00-177-6786 is a Waveguide Assembly, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5935-01-286-6639. Verify interchangeability with system specifications before substitution.
Key specifications for 5985-00-177-6786: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.394 INCHES MINIMUM AND 0.396 INCHES MAXIMUM FIRST FLANGE IN; Flange Quantity: 2. 22 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 5985-00-177-6786 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.