The Switch,waveguide, cataloged under National Stock Number 5985-00-956-3040, 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 14 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-956-3040 |
| Primary Part Number | 2181737-4 |
| Item Name | Switch,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Caes Mission Systems Llc |
| Status | ACTIVE |
| Switching Time | 0.1 SECONDS |
| Actuator Voltage in Volts | 20.0 MINIMUM AND 30.0 MAXIMUM |
| Coupling Position Quantity | 2 |
| Nominal Thread Size | 0.164 INCHES FLANGE CONNECTION FACILITY HOLE IN |
| Nominal Thread Size | 0.190 INCHES MOUNTING FACILITY HOLE IN |
| Minimum Crosstalk Rating in Decibels | 40.0 SINGLE |
| Switch Type | TRANSFER |
| Insertion Loss in Decibels | 0.20 SINGLE |
| Actuator Operating Method | RELAY |
| Rf Power Handling Capability | 230.0 KILOWATTS PEAK SINGLE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) MOUNTING FACILITY HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) FLANGE CONNECTION FACILITY HOLE |
| Rf Maximum Voltage Rating | 230.0 KILOVOLTS PEAK |
| 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 |
|---|---|
| 2181737-4 | Caes Mission Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 2181737-4 | 5/9 Secondary reference Cambridge Marine Industries Inc |
| 2181737-4 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
| 2181737-4 | 3/9 Design control — primary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
| 2181737-4 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-956-3040 is a Switch,waveguide, manufactured by Caes Mission Systems Llc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-956-3040 has 1 manufacturer part number on file: 2181737-4 (Caes Mission Systems Llc).
Key specifications for 2181737-4: Switching Time: 0.1 SECONDS; Overall Height: 3.000 INCHES NOMINAL IN; Actuator Voltage in Volts: 20.0 MINIMUM AND 30.0 MAXIMUM; Overall Length: 6.125 INCHES NOMINAL IN. 14 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 5985-00-956-3040 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.