The Flange,waveguide, cataloged under National Stock Number 5985-01-088-5417, 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 L3 Technologies, Inc. Div L3 Keo. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-088-5417 |
| Primary Part Number | 055996 |
| Item Name | Flange,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | L3 Technologies, Inc. Div L3 Keo |
| Status | ACTIVE |
| Flange Inside Height | 0.218 INCHES MINIMUM AND 0.219 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Outside Height | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Connecting Hole Diameter | 0.128 INCHES NOMINAL SINGLE FLANGE SINGLE CONNECTION FACILITY IN |
| Flange Inside Width | 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Depth | 0.188 INCHES NOMINAL SINGLE FLANGE IN |
| Flange Outside Width | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM SINGLE FLANGE IN |
| Material | COPPER ALLOY SINGLE TUBING JACKET |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SINGLE FLANGE SINGLE CONNECTION FACILITY |
| Flange Style | COVER 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 |
|---|---|
| 055996 PRIMARY | L3 Technologies, Inc. Div L3 Keo (USA) |
| Reference | Meaning |
|---|---|
| 933C055996 | 5/9 Secondary reference L3 Technologies, Inc. Div L3 Keo |
NSN 5985-01-088-5417 is a Flange,waveguide, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-088-5417 has 1 manufacturer part number on file: 055996 (L3 Technologies, Inc. Div L3 Keo).
Key specifications for 055996: Flange Inside Height: 0.218 INCHES MINIMUM AND 0.219 INCHES MAXIMUM SINGLE FLANGE IN; Flange Outside Height: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM SINGLE FLANGE IN; Flange Connecting Hole Diameter: 0.128 INCHES NOMINAL SINGLE FLANGE SINGLE CONNECTION FACILITY IN; Flange Inside Width: 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM SINGLE FLANGE IN. 9 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 5985-01-088-5417 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.