The Switch,waveguide, cataloged under National Stock Number 5985-01-140-1167, 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 Caes Mission Systems Llc. Government technical data includes 1 specification, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-140-1167 |
| Primary Part Number | MD-25K27 |
| Item Name | Switch,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Caes Mission Systems Llc |
| Status | ACTIVE |
| Minimum Crosstalk Rating in Decibels | 25.0 SINGLE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| MD-25K27 | Caes Mission Systems Llc (USA) |
| 8370120006 | Thales Deutschland Gmbh Div Customer Services (DEU) |
| SM-A-858393 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| SM-A-858393 | 3/2 Design control — primary reference U.S. Government activity |
| MA8319-4Z2 | 5/2 Secondary reference U.S. Government activity |
NSN 5985-01-140-1167 is a Switch,waveguide, manufactured by Caes Mission Systems Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-140-1167 has 3 manufacturer part numbers on file: MD-25K27 (Caes Mission Systems Llc), 8370120006 (Thales Deutschland Gmbh Div Customer Services), SM-A-858393 (Microwave Engineering Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5985-01-159-3137. Verify interchangeability with system specifications before substitution.
Key specifications for MD-25K27: Minimum Crosstalk Rating in Decibels: 25.0 SINGLE; Special Features: MATERIALS NON-NUTRIENT TO FUNGUS. 1 specification is 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 5985-01-140-1167 has DEMIL Code B. 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.