The Altimeter,pressurized Compartmen, cataloged under National Stock Number 6685-01-028-4220, 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 Honeywell International, Inc Div Aerospace-Tucson. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Altimeter,pressurized Compartmen |
| FSC / FSG | 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments (FSG 66) |
| Manufacturers | Honeywell International, Inc Div Aerospace-Tucson (CAGE 64547) |
| Parameter | Value |
|---|---|
| NSN | 6685-01-028-4220 |
| Primary Part Number | 139620-4 |
| Item Name | Altimeter,pressurized Compartmen |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Part Number | Manufacturer |
|---|---|
| 139620-4 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| Reference | Meaning |
|---|---|
| 139620-4 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 6685-01-028-4220 is a Altimeter,pressurized Compartmen, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-028-4220 has 1 manufacturer part number on file: 139620-4 (Honeywell International, Inc Div Aerospace-Tucson).
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 6685-01-028-4220 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.