The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-01-040-7710, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-040-7710 |
| Primary Part Number | 45-T8478K-51E-000-0350-50/750F |
| 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 | 420.000 INCHES NOMINAL IN |
| Bulb Type | FLEXIBLE EXTENSION PLAIN |
| Active Portion Diameter | 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Bulb Connection Type | UNION |
| Dial Diameter | 4.500 INCHES NOMINAL IN |
| Indicator Connection Method | FLEXIBLE TUBE |
| Style Designator | BULB W/O SOCKET |
| Case Diameter | 5.750 INCHES NOMINAL IN |
| Actuating Medium | GAS |
| Pointer/pen Type and Quantity | 1 INDICATING SINGLE AND 1 REFERENCE SINGLE |
| Active Portion Length | 3.000 INCHES MAXIMUM IN |
| Scale Type | DIAL |
| Scale Measurement Range | +50.000 TO 750.000 DEG FAHRENHEIT |
| Bulb Quantity | 1 |
| Bulb Tip Length | 3.000 INCHES NOMINAL IN |
| Bulb Style | PLAIN BULB W/BENDABLE EXTENSION |
| Material | STEEL CORROSION RESISTING BULB |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 41GP-Y00U-M354 | Weksler Glass Thermometer Corp (USA) |
| 45-T8478K-51E-000-0350-50/750F PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 4 1-2DL35FTCAPTXB | 5/9 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 6685-01-040-7710 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 6685-01-040-7710 has 2 manufacturer part numbers on file: 41GP-Y00U-M354 (Weksler Glass Thermometer Corp), 45-T8478K-51E-000-0350-50/750F (Ashcroft Inc Dba Heise).
Key specifications for 45-T8478K-51E-000-0350-50/750F: Flexible Tube Length: 420.000 INCHES NOMINAL IN; Bulb Type: FLEXIBLE EXTENSION PLAIN; Active Portion Diameter: 0.373 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN; Bulb Connection Type: UNION. 17 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.