The Dummy Load,electrical, cataloged under National Stock Number 5985-01-203-1187, 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 Northrop Grumman Systems Corporation. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-01-203-1187 |
| Primary Part Number | 166997 |
| Item Name | Dummy Load,electrical |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Operating Position | ALL POSITIONS |
| Termination Type | WAVEGUIDE FLANGE |
| Overall Diameter | 3.125 INCHES NOMINAL IN |
| Voltage Standing Wave Ratio | 1.10 |
| Waveguide Flange Designation | UG-441/U |
| Body Width | 1.625 INCHES MAXIMUM IN |
| Body Height | 0.875 INCHES MAXIMUM IN |
| Style Designator | WAVEGUIDE MOUNTED |
| Cooling Method | SELF-COOLED |
| Frequency Range Rating | +5.400 TO 5.900 GIGAHERTZ |
| Voltage Standing Wave Ratio Frequency Range | +5.400 TO 5.900 GIGAHERTZ |
| Power Rating | 375.000 WATTS AVERAGE AND 300.000 KILOWATTS PEAK |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 166997 | Microlab/fxr Llc (USA) |
| AW1403 | Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc (USA) |
| 166997 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| MA59074 | Semic Rf Electronic Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| MA59074 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-203-1187 is a Dummy Load,electrical, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-203-1187 has 4 manufacturer part numbers on file: 166997 (Microlab/fxr Llc), AW1403 (Antenna & Radome Research Associates Corp Dba Arra Inc Div Arra Inc), 166997 (Northrop Grumman Systems Corporation), MA59074 (Semic Rf Electronic Gmbh).
1 possible match (shared part number, not a government interchangeability claim): 2530-01-220-0621. Verify interchangeability with system specifications before substitution.
Key specifications for 166997: Operating Position: ALL POSITIONS; Termination Type: WAVEGUIDE FLANGE; Overall Diameter: 3.125 INCHES NOMINAL IN; Voltage Standing Wave Ratio: 1.10. 12 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 5985-01-203-1187 has DEMIL Code Q. 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.