The Thermometer,self-Indicating,digi, cataloged under National Stock Number 6685-01-211-9000, 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 Naval Inventory Control Point Mechanicsburg. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-01-211-9000 |
| Primary Part Number | 6440TWCP |
| Item Name | Thermometer,self-Indicating,digi |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Environmental Attribute Code | NON-MERCURY ALTERNATIVE - MEDICAL PRODUCTS - THERMOMETERS |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 6440TWCP | Naval Inventory Control Point Mechanicsburg (USA) |
| 190409-1CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 190409-1 | 5/9 Secondary reference Hex Industries Inc |
| 6440TW | 3/1 Design control — primary reference Ashcroft Inc Dba Heise |
NSN 6685-01-211-9000 is a Thermometer,self-Indicating,digi, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-211-9000 has 2 manufacturer part numbers on file: 6440TWCP (Naval Inventory Control Point Mechanicsburg), 190409-1CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for 6440TWCP: Criticality Code Justification: ZZZY; Environmental Attribute Code: NON-MERCURY ALTERNATIVE - MEDICAL PRODUCTS - THERMOMETERS; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 3 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.