The Indicator,humidity,card, cataloged under National Stock Number 6685-01-439-3172, 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 Qioptiq Ltd. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-01-439-3172 |
| Primary Part Number | 015474 |
| Item Name | Indicator,humidity,card |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Qioptiq Ltd |
| Status | ACTIVE |
| Overall Diameter | 1.200 INCHES NOMINAL IN |
| Style Designator | CIRCULAR |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 015474 | Qioptiq Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 015474 | 5/1 Secondary reference Bae Systems (operations) Limited |
| 015474 | 3/9 Design control — primary reference Pilkington Optrnics Incrprtion |
NSN 6685-01-439-3172 is a Indicator,humidity,card, manufactured by Qioptiq Ltd, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-439-3172 has 1 manufacturer part number on file: 015474 (Qioptiq Ltd).
Key specifications for 015474: Overall Diameter: 1.200 INCHES NOMINAL IN; Style Designator: CIRCULAR; Special Features: VERY LOW HUMIDITY RATING CAUSES COLOR CHANGE AS AN INDICATION THERE IS A VACUUM LEAK, SILICA GEL PAPER, .010/.008 INCH THICK IN; End Item Identification: HOUSING ASSEMBLY PART NUMBER 034534, ON THE F-16C/D AIRCRAFT. 2 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 6685-01-439-3172 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.