The Altimeter,pressurized Compartmen, cataloged under National Stock Number 6685-01-441-6528, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-441-6528 |
| Item Name | Altimeter,pressurized Compartmen |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Scale Quantity | 1 |
| Contact Type | PIN |
| Scale Marking | LETTERS AND NUMERALS AND LINED INCREMENTS |
| Mechanical Connection Quantity | 1 |
| Scale Name | CABIN PRESSURE ALTITUDE |
| Electrical Connection Quantity | 1 |
| Overall Diameter | 2.180 INCHES NOMINAL IN |
| Electrical Connection Identifying Number | DM5600-3P OR EQUIVALENT |
| Mounting Method | THREADED BEZEL |
| Mechanical Connection Type | INTERNAL UNF BOSS |
| Scale Marking Transparency | NONLUMINOUS |
| Mechanical Connection Size | 7/16-20 UNF PER MS33649-4 |
| Contact Quantity | 3 |
| Nonluminous Scale Marking and Color | LINED INCREMENTS WHITE |
| Nonluminous Scale Marking and Color | NUMERALS WHITE |
| Nonluminous Scale Marking and Color | LETTERS WHITE |
| Specification/standard Data | 81349-MIL-A-25933 GOVERNMENT SPECIFICATION AND 98810-24194 MANUFACTURERS SPECIFICATION |
| Pointer Quantity | 1 |
| Nondefinitive Spec/std Data | AAU-3A/A TYPE A |
| Connector Controlling Agency | DEUTSCH |
| Pointer Color | WHITE |
| Pointer Finish | NONLUMINOUS |
| Scale Smallest Increment Graduation | 1000 FEET FT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 45050-8114 | 3/2 Design control — primary reference U.S. Government activity |
| 2109-5-M-3 | 5/1 Secondary reference Kearflex Engineering Company |
NSN 6685-01-441-6528 is a Altimeter,pressurized Compartmen, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-441-6528: Scale Quantity: 1; Overall Height: 2.375 INCHES NOMINAL IN; Contact Type: PIN; Scale Marking: LETTERS AND NUMERALS AND LINED INCREMENTS. 23 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 6685-01-441-6528 has DEMIL Code B. 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.