The Flange,waveguide, cataloged under National Stock Number 5985-01-476-6589, 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 Naval Sea Systems Command. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-476-6589 |
| Primary Part Number | 6640201 PC 8 |
| Item Name | Flange,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flange Inside Height | 0.493 INCHES MINIMUM AND 0.501 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Connecting Hole Diameter | 0.177 INCHES NOMINAL SINGLE FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 1.118 INCHES MINIMUM AND 1.126 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Depth | 0.651 INCHES MINIMUM AND 0.661 INCHES MAXIMUM SINGLE FLANGE IN |
| Material | COPPER ALLOY SINGLE FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Flange Outside Diameter | 2.497 INCHES MINIMUM AND 2.498 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Style | CHOKE TYPE SINGLE 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 |
|---|---|
| 6640198 PC 12 | Naval Sea Systems Command (USA) |
| 6640201 PC 8 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6640201 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5985-01-476-6589 is a Flange,waveguide, manufactured by Naval Sea Systems Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-476-6589 has 2 manufacturer part numbers on file: 6640198 PC 12 (Naval Sea Systems Command), 6640201 PC 8 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 5985-01-476-6593, 5315-01-476-8559, 5305-01-627-3493. Verify interchangeability with system specifications before substitution.
Key specifications for 6640201 PC 8: Flange Inside Height: 0.493 INCHES MINIMUM AND 0.501 INCHES MAXIMUM SINGLE FLANGE IN; Flange Connecting Hole Diameter: 0.177 INCHES NOMINAL SINGLE FLANGE SINGLE CONNECTION FACILITY IN; Flange Inside Width: 1.118 INCHES MINIMUM AND 1.126 INCHES MAXIMUM SINGLE FLANGE IN; Flange Depth: 0.651 INCHES MINIMUM AND 0.661 INCHES MAXIMUM SINGLE FLANGE IN. 8 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 5985-01-476-6589 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.