The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-080-5401, 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 22 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-080-5401 |
| Item Name | Thermometer,self-Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Body Diameter | 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN |
| FSC Application Data | THERMOMETER,SELF-INDICATING LIQUID IN GLASS,EXCEPT METEOROLOGICAL |
| Socket Overall Length | 6.750 INCHES NOMINAL6.750 INCHES NOMINAL IN |
| Stem Length | 6.000 INCHES NOMINAL6.000 INCHES NOMINAL IN |
| Design Type | FLUCTUATINGFLUCTUATING |
| Separable Socket Style | PLAIN SOCKETPLAIN SOCKET |
| Scale Inscription/background Color | BLACK MARKING ON ALUMINUM BACKGROUNDBLACK MARKING ON ALUMINUM BACKGROUND |
| Scale Smallest Increment | 2.0 DEG FAHRENHEIT2.0 DEG FAHRENHEIT |
| Scale Accuracy Rating | 1 PCT ENTIRE RANGE1 PCT ENTIRE RANGE |
| Style Designator | ADJUSTABLE ANGLE |
| Actuating Medium | MERCURYMERCURY |
| Features Provided | LENS MAGNIFYING FRONT AND LENS MAGNIFYING FRONT AND PROTECTIVE GLASS/PLASTICPROTECTIVE GLASS/PLASTIC |
| Body Length | 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN |
| Scale Type | ETCHED TUBEETCHED TUBE |
| Bulb Tip Outside Diameter | 0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN |
| Scale Measurement Range | +30.000 TO 240.000 DEG FAHRENHEIT+30.000 TO 240.000 DEG FAHRENHEIT |
| External Thread Size | 3/4 IN. NPT3/4 IN. NPT IN |
| Surface Treatment | ENAMEL METER CASE |
| Internal Thread Size | 3/4 IN. NPT3/4 IN. NPT IN |
| Material | ALUMINUM METER CASE |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SCALE AND STEM LG |
| Tip Length | 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN |
| 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 |
|---|---|
| 9VS6 | 3/1 Design control — primary reference Weiss Instruments, Inc. |
NSN 6685-00-080-5401 is a Thermometer,self-Indicating, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-00-080-5401: Body Diameter: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN; FSC Application Data: THERMOMETER,SELF-INDICATING LIQUID IN GLASS,EXCEPT METEOROLOGICAL; Socket Overall Length: 6.750 INCHES NOMINAL6.750 INCHES NOMINAL IN; Stem Length: 6.000 INCHES NOMINAL6.000 INCHES NOMINAL IN. 22 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.