The Dummy Load,electrical, cataloged under National Stock Number 5985-00-951-6902, 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 Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-951-6902 |
| Primary Part Number | 90LW339 |
| Item Name | Dummy Load,electrical |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc |
| Status | ACTIVE |
| Operating Position | ALL POSITIONS |
| Termination Type | WAVEGUIDE FLANGE |
| Voltage Standing Wave Ratio | 1.15 |
| Waveguide Flange Designation | UG135/U |
| Body Width | 1.625 INCHES NOMINAL IN |
| Body Height | 1.625 INCHES NOMINAL IN |
| Style Designator | WAVEGUIDE MOUNTED |
| Cooling Method | SELF-COOLED |
| Ambient Temp at Full Rated Power | 55.0 CELSIUS DEGC |
| Frequency Range Rating | +9.000 TO 10.000 GIGAHERTZ |
| Voltage Standing Wave Ratio Frequency Range | +9.000 TO 10.000 GIGAHERTZ |
| Power Rating | 4.000 WATTS AVERAGE |
| 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 |
|---|---|
| 90LW339 PRIMARY | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 253363 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5985-00-951-6902 is a Dummy Load,electrical, manufactured by Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-951-6902 has 1 manufacturer part number on file: 90LW339 (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
1 possible match (shared part number, not a government interchangeability claim): 4720-01-234-5011. Verify interchangeability with system specifications before substitution.
Key specifications for 90LW339: Operating Position: ALL POSITIONS; Termination Type: WAVEGUIDE FLANGE; Voltage Standing Wave Ratio: 1.15; Waveguide Flange Designation: UG135/U. 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 5985-00-951-6902 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.