The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-01-616-3023, 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 29 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-616-3023 |
| Item Name | Thermometer,indicating,capillary |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Flexible Tube Length | 720.0 INCHES NOMINAL IN |
| Bulb Overall Length | 19.6875 INCHES NOMINAL IN |
| Bulb Type | PLAIN RIGID |
| Active Portion Diameter | 0.375 INCHES NOMINAL IN |
| Scale Calibration | PER MIL-T-19646 |
| Separable Socket Style | SREW-IN TYPE, EXTERNAL THREAD, RIGID |
| Scale Smallest Increment | 2.0 DEG FAHRENHEIT |
| Scale Accuracy Rating | 1 PERCENT OF INCLUDED SCALE RANGES |
| Bulb Connection Type | FLANGE UNION |
| Dial Diameter | 4.500 INCHES NOMINAL IN |
| Indicator Connection Method | FLEXIBLE TUBE |
| Style Designator | BULB W/O SOCKET |
| Mounting Facility Screw Thread Series Designator | UNEF |
| Case Diameter | 5.875 INCHES NOMINAL IN |
| Actuating Medium | DRY NITROGEN |
| Pointer/pen Type and Quantity | 1 INDICATING SINGLE AND 1 REFERENCE SINGLE |
| Active Portion Length | 3.6875 INCHES NOMINAL IN |
| Extension Neck Length | 16.000 INCHES NOMINAL IN |
| Mounting Thread Quantity | 18 2A PER INCH A |
| Scale Type | DIAL |
| Mounting Facility Nominal Screw Thread Diameter | 1.250 INCHES IN |
| Bulb Tip Outside Diameter | 0.625 INCHES NOMINAL IN |
| Scale Measurement Range | +20.0 TO 240.0 DEG FAHRENHEIT |
| Bulb Quantity | 1 |
| Bulb Tip Length | 3.500 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OR CHROMATE AND PRIMER AND ENAMEL METER CASE |
| Bulb Style | PLAIN BULB |
| Material | ALUMINUM METER CASE |
| Material | ALUMINUM DIAL FACE |
| 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 |
|---|---|
| M19646-C224D460 | 5/9 Secondary reference Moeller Instrument Company, Inc. Dba Moeller Instrument Co |
| MIL-T-19646 | 4/1 Identification reference U.S. Government activity |
| M19646-C224D460 | 2/2 Government specification standardization U.S. Government activity |
NSN 6685-01-616-3023 is a Thermometer,indicating,capillary, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-616-3023: Flexible Tube Length: 720.0 INCHES NOMINAL IN; Bulb Overall Length: 19.6875 INCHES NOMINAL IN; Bulb Type: PLAIN RIGID; Active Portion Diameter: 0.375 INCHES NOMINAL IN. 29 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.