The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-242-2154, 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 Ashcroft Inc Dba Heise. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-242-2154 |
| Primary Part Number | N35A9490000B |
| Item Name | Thermometer,self-Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Stem Length | 3.625 INCHES NOMINAL3.625 INCHES NOMINAL IN |
| Design Type | FLUCTUATINGFLUCTUATING |
| Scale Inscription/background Color | BLACK MARKING ON SILVER BACKGROUNDBLACK MARKING ON SILVER BACKGROUND |
| Scale Smallest Increment | 5.0 DEG FAHRENHEIT5.0 DEG FAHRENHEIT |
| Style Designator | ADJUSTABLE ANGLE |
| Actuating Medium | MERCURYMERCURY |
| Features Provided | LENS MAGNIFYING FRONT AND LENS MAGNIFYING FRONT AND EXPANSION CHAMBEREXPANSION CHAMBER |
| Securing Device Type | CLIPCLIP |
| Scale Type | METALMETAL |
| Nondefinitive Spec/std Data | 3 CLASS AND E FORM AND D RANGE AND 1 STYLE AND 1 TYPE |
| Scale Measurement Range | +50.000 TO 400.000 DEG FAHRENHEIT+50.000 TO 400.000 DEG FAHRENHEIT |
| Scale Length | 9.000 INCHES NOMINAL9.000 INCHES NOMINAL IN |
| Material | ALUMINUM METER CASE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| N35A9490000B PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| GGT321 | 4/1 Identification reference U.S. Government activity |
NSN 6685-00-242-2154 is a Thermometer,self-Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-242-2154 has 1 manufacturer part number on file: N35A9490000B (Ashcroft Inc Dba Heise).
Key specifications for N35A9490000B: Stem Length: 3.625 INCHES NOMINAL3.625 INCHES NOMINAL IN; Design Type: FLUCTUATINGFLUCTUATING; Scale Inscription/background Color: BLACK MARKING ON SILVER BACKGROUNDBLACK MARKING ON SILVER BACKGROUND; Scale Smallest Increment: 5.0 DEG FAHRENHEIT5.0 DEG FAHRENHEIT. 13 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.