The Flange,waveguide, cataloged under National Stock Number 5985-01-679-5243, 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 Maury Microwave, Inc. Dba Maury Microwave. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Flange,waveguide |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Maury Microwave, Inc. Dba Maury Microwave (CAGE 13047); Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (CAGE 1W025) |
| Parameter | Value |
|---|---|
| NSN | 5985-01-679-5243 |
| Primary Part Number | P340N3 |
| Item Name | Flange,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Maury Microwave, Inc. Dba Maury Microwave |
| Status | ACTIVE |
| 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 |
|---|---|
| P340N3 PRIMARY | Maury Microwave, Inc. Dba Maury Microwave (USA) |
| DAF7257P004-227 | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| Reference | Meaning |
|---|---|
| DAF7257P004 | D/9 Drawing number reference only Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
NSN 5985-01-679-5243 is a Flange,waveguide, manufactured by Maury Microwave, Inc. Dba Maury Microwave, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-679-5243 has 2 manufacturer part numbers on file: P340N3 (Maury Microwave, Inc. Dba Maury Microwave), DAF7257P004-227 (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-691-3684. Verify interchangeability with system specifications before substitution.
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 5985-01-679-5243 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.