The Coupling,waveguide, cataloged under National Stock Number 5985-00-569-5849, 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 Frontgrade Technologies Inc.. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5985-00-569-5849 |
| Primary Part Number | 680051 |
| Item Name | Coupling,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | CANCELLED |
| FSC Application Data | ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT |
| Coupling Outside Width | 2.680 INCHES MINIMUM AND 2.810 INCHES MAXIMUM IN |
| Style Designator | RECTANGULAR |
| Coupling Outside Height | 2.390 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE SINGLE COUPLING OUTSIDE SURFACES |
| Material | STEEL CORROSION RESISTING SINGLE COUPLING |
| Coupling Overall Depth | 0.680 INCHES MINIMUM AND 0.810 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| G400080-1 | L3harris Technologies, Inc Div Space & Airborne Systems (USA) |
| 680051 | Ministry of Defence, De&s Air Defence Electronic Warfare Systems (adews Dt) (GBR) |
| 680051 PRIMARY | Frontgrade Technologies Inc. (USA) |
| 272216198012 | Thales Deutschland Gmbh Div Naval (DEU) |
| 352250017874 | Thales Nederland (NLD) |
| Reference | Meaning |
|---|---|
| G230901 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 680051 | 5/9 Secondary reference U.S. Government activity |
| 680051H | 5/9 Secondary reference U.S. Government activity |
| 8531063 | 5/1 Secondary reference Us Army Aviation and Missile Command |
| SM-A-778244 | 5/9 Secondary reference U.S. Government activity |
| SM-A-778244-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| 48110 | C/1 Advisory reference — outside the item-of-supply concept Frontgrade Technologies Inc. |
| 680051H | C/1 Advisory reference — outside the item-of-supply concept Frontgrade Technologies Inc. |
| 1811265 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| 48110 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-569-5849 is a Coupling,waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: cancelled.
NSN 5985-00-569-5849 has 5 manufacturer part numbers on file: G400080-1 (L3harris Technologies, Inc Div Space & Airborne Systems), 680051 (Ministry of Defence, De&s Air Defence Electronic Warfare Systems (adews Dt)), 680051 (Frontgrade Technologies Inc.), 272216198012 (Thales Deutschland Gmbh Div Naval), 352250017874 (Thales Nederland).
3 possible matches (shared part number, not a government interchangeability claim): 5330-01-070-3361, 4710-01-126-9440, 5930-01-302-6880. Verify interchangeability with system specifications before substitution.
Key specifications for 680051: FSC Application Data: ANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT; Coupling Outside Width: 2.680 INCHES MINIMUM AND 2.810 INCHES MAXIMUM IN; Style Designator: RECTANGULAR; Coupling Outside Height: 2.390 INCHES NOMINAL IN. 7 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 5985-00-569-5849 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
NSN 5985-00-569-5849 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.