The Humidity Element,resistance, cataloged under National Stock Number 6685-01-705-6522, 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 Bae Systems Integrated System Technologies Ltd. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-705-6522 |
| Primary Part Number | 25831153 |
| Item Name | Humidity Element,resistance |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bae Systems Integrated System Technologies Ltd |
| Status | ACTIVE |
| Mounting Method | PIN(S) |
| Active Ingredient | MANUFACTURERS SECRET |
| Body Nominal Height | 22.17 MILLIMETERS MM |
| Nominal Width | 4.27 MILLIMETERS MM |
| Media for Which Designed | MOISTURE |
| Material | PLASTIC AND COPPER |
| Nominal Thickness | 2.03 MILLIMETERS MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 25831153 | Bae Systems Integrated System Technologies Ltd (GBR) |
| 25831153 | Bae Systems Electronics Limited Div Underwater Systems Division (GBR) |
| Reference | Meaning |
|---|---|
| HIH-4000-03 | 5/2 Secondary reference U.S. Government activity |
| HIH-4000-003 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6685-01-705-6522 is a Humidity Element,resistance, manufactured by Bae Systems Integrated System Technologies Ltd, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-705-6522 has 2 manufacturer part numbers on file: 25831153 (Bae Systems Integrated System Technologies Ltd), 25831153 (Bae Systems Electronics Limited Div Underwater Systems Division).
Key specifications for 25831153: Mounting Method: PIN(S); Active Ingredient: MANUFACTURERS SECRET; Body Nominal Height: 22.17 MILLIMETERS MM; Special Features: MOLDED THERMOSET PLASTIC HOUSING.. 7 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.
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.