The Waveguide Assembly, cataloged under National Stock Number 5985-00-299-0063, 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 Northrop Grumman Support Services Corp. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-299-0063 |
| Primary Part Number | 337D780G01 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Support Services Corp |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 1.502 INCHES MINIMUM AND 1.505 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Quantity | 2 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 2.834 INCHES MINIMUM AND 2.846 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Connecting Hole Diameter | 0.257 INCHES MINIMUM AND 0.260 INCHES MAXIMUM FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 3.002 INCHES MINIMUM AND 3.005 INCHES MAXIMUM FIRST FLANGE IN |
| Waveguide Length | 7.980 INCHES MINIMUM AND 8.020 INCHES MAXIMUM IN |
| Waveguide Outside Height | 1.494 INCHES MINIMUM AND 1.506 INCHES MAXIMUM IN |
| Waveguide Outside Width | 2.994 INCHES MINIMUM AND 3.006 INCHES MAXIMUM IN |
| Flange Depth | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM FIRST FLANGE IN |
| Surface Treatment | CHROMATE ZINC ALL TUBING SEGMENT AND FLANGE ALL SURFACES |
| Waveguide Inside Height | 1.334 INCHES MINIMUM AND 1.346 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY ALL TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES |
| Flange Outside Diameter | 5.298 INCHES MINIMUM AND 5.328 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Style | COVER TYPE FIRST FLANGE |
| 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 |
|---|---|
| 337D780G01 PRIMARY | Northrop Grumman Support Services Corp (USA) |
| 337D780G01 | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 337D780G01 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5985-00-299-0063 is a Waveguide Assembly, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-299-0063 has 2 manufacturer part numbers on file: 337D780G01 (Northrop Grumman Support Services Corp), 337D780G01 (Frontgrade Technologies Inc.).
Key specifications for 337D780G01: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 1.502 INCHES MINIMUM AND 1.505 INCHES MAXIMUM FIRST FLANGE IN; Flange Quantity: 2. 20 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 5985-00-299-0063 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.