The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-01-235-7450, 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 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-235-7450 |
| Primary Part Number | 35-T8478K-51E-000-0400 20/240 |
| Item Name | Thermometer,indicating,capillary |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Flexible Tube Length | 480.000 INCHES NOMINAL IN |
| Bulb Type | FLEXIBLE EXTENSION PLAIN |
| Bulb Connection Type | UNION |
| Dial Diameter | 3.500 INCHES NOMINAL IN |
| Indicator Connection Method | FLEXIBLE TUBE |
| Style Designator | BULB W/O SOCKET |
| Case Diameter | 4.750 INCHES NOMINAL IN |
| Actuating Medium | GAS |
| Pointer/pen Type and Quantity | 1 INDICATING SINGLE |
| Scale Type | DIAL |
| Scale Measurement Range | +20.000 TO 240.000 DEG FAHRENHEIT |
| Bulb Quantity | 1 |
| Bulb Style | PLAIN BULB W/BENDABLE EXTENSION |
| Material | ALUMINUM METER CASE |
| Material | STEEL CORROSION RESISTING BULB |
| Material | STEEL CORROSION RESISTING CAPILLARY TUBE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 35-T8478K-51E-000-0400 20/240 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| 31GP-Y00R-F40Y | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 31GP-Y00R-F40Y | 5/9 Secondary reference Weksler Glass Thermometer Corp |
| 63A146429P5 | 5/9 Secondary reference Lockheed Martin Corporation Div Rotary and Mission Systems |
| 35-T8478K-51E-000-0400 20/240 F | 5/9 Secondary reference Ashcroft Inc Dba Heise |
NSN 6685-01-235-7450 is a Thermometer,indicating,capillary, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-235-7450 has 2 manufacturer part numbers on file: 35-T8478K-51E-000-0400 20/240 (Ashcroft Inc Dba Heise), 31GP-Y00R-F40Y (Ashcroft Inc Dba Heise).
Key specifications for 35-T8478K-51E-000-0400 20/240: Flexible Tube Length: 480.000 INCHES NOMINAL IN; Bulb Type: FLEXIBLE EXTENSION PLAIN; Bulb Connection Type: UNION; Dial Diameter: 3.500 INCHES NOMINAL IN. 16 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.