The Seal,waveguide, cataloged under National Stock Number 5985-01-274-6476, 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. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Seal,waveguide |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711); Brush Wellman Inc (CAGE 8V474); American Beryllia Inc (CAGE 1U1C3) |
| Parameter | Value |
|---|---|
| NSN | 5985-01-274-6476 |
| Primary Part Number | 2901392-1 |
| Item Name | Seal,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Sea Systems Command |
| 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 |
|---|---|
| 2901392-1 PRIMARY | Naval Sea Systems Command (USA) |
| P(M16)-2.500-.780-.035 | Brush Wellman Inc (USA) |
| CM4542-000 | American Beryllia Inc (USA) |
| Reference | Meaning |
|---|---|
| CM4542-000 | 5/9 Secondary reference General Ceramics Inc National Beryllia Div |
| CM4542 | 5/9 Secondary reference General Ceramics Inc National Beryllia Div |
NSN 5985-01-274-6476 is a Seal,waveguide, manufactured by Naval Sea Systems Command, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-274-6476 has 3 manufacturer part numbers on file: 2901392-1 (Naval Sea Systems Command), P(M16)-2.500-.780-.035 (Brush Wellman Inc), CM4542-000 (American Beryllia Inc).
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 5985-01-274-6476 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.