The Isolator,radio Frequency Reflect, cataloged under National Stock Number 5985-01-421-1372, 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 Frontgrade Technologies Inc.. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Isolator,radio Frequency Reflect |
| FSC / FSG | 5985 — Antennas, Waveguides, and Related Equipment (FSG 59) |
| Manufacturers | Frontgrade Technologies Inc. (CAGE 66544); Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (CAGE 06481) |
| Parameter | Value |
|---|---|
| NSN | 5985-01-421-1372 |
| Primary Part Number | 339805 |
| Item Name | Isolator,radio Frequency Reflect |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 339805 | Frontgrade Technologies Inc. (USA) |
| 270242-0001 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| 270242-0001 | 3/9 Design control — primary reference Litton Systems Inc. Div Navigation Systems Division |
| 339805 | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
| 339805 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-01-421-1372 is a Isolator,radio Frequency Reflect, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-421-1372 has 2 manufacturer part numbers on file: 339805 (Frontgrade Technologies Inc.), 270242-0001 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
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.