The Monitor Unit, cataloged under National Stock Number 6685-00-623-9573, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Meggitt (new Hampshire), Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Monitor Unit |
| FSC / FSG | 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments (FSG 66) |
| Manufacturers | Meggitt (new Hampshire), Inc (CAGE 58880) |
| Parameter | Value |
|---|---|
| NSN | 6685-00-623-9573 |
| Primary Part Number | 271-00011 |
| Item Name | Monitor Unit |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Meggitt (new Hampshire), 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 |
|---|---|
| 271-00011 PRIMARY | Meggitt (new Hampshire), Inc (USA) |
| Reference | Meaning |
|---|---|
| 0978REVBPC271-7C | 5/9 Secondary reference Meggitt (new Hampshire), Inc |
| 0980REVBPC21 | 5/9 Secondary reference Meggitt (new Hampshire), Inc |
| 271-7C | 5/9 Secondary reference Meggitt (new Hampshire), Inc |
| 3304847REVBPC21 | 5/2 Secondary reference U.S. Government activity |
| 3304845REVBPC271-7C | 5/2 Secondary reference U.S. Government activity |
| CD01020REVAPC21 | 5/9 Secondary reference Meggitt (new Hampshire), Inc |
NSN 6685-00-623-9573 is a Monitor Unit, manufactured by Meggitt (new Hampshire), Inc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-623-9573 has 1 manufacturer part number on file: 271-00011 (Meggitt (new Hampshire), Inc).
1 possible match (shared part number, not a government interchangeability claim): 6140-01-681-0077. Verify interchangeability with system specifications before substitution.
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.