The Hygrometer,dial Indicating, cataloged under National Stock Number 6685-00-159-6020, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 6685-00-159-6020 |
| Item Name | Hygrometer,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 25-811270-1 | 3/9 Design control — primary reference General Dynamics Advanced Information Systems Inc. Dba General Dynamics Advanced Information Systems |
| 22-7059 | 5/9 Secondary reference Bacharach, Inc. |
NSN 6685-00-159-6020 is a Hygrometer,dial Indicating, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6130-01-553-1348. Verify interchangeability with system specifications before substitution.
Key specifications for 6685-00-159-6020: Special Features: 0 TO 100 PCT SCALE WITH 1 PCT DIVISIONS;BLACK NUMERALS,WHITE BACKGROUND;OPERATING TEMP 35 DEGREES FAHRENHEIT TO 130 DEGREES FAHRENHEIT;FLUSH MTG;ALUMINUM 2024-T3;BLACK ENAMEL. 0 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.