The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-01-121-0571, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6685-01-121-0571 |
| Primary Part Number | 35T8478K51E000020020/240F |
| 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 | 240.000 INCHES NOMINAL IN |
| Bulb Type | PLAIN RIGID |
| Active Portion Diameter | 0.375 INCHES NOMINAL IN |
| Bulb Connection Type | UNION |
| Dial Diameter | 3.500 INCHES NOMINAL IN |
| Indicator Connection Method | FLEXIBLE TUBE |
| Case Diameter | 4.620 INCHES NOMINAL IN |
| Actuating Medium | GAS |
| Pointer/pen Type and Quantity | 1 INDICATING SINGLE |
| Active Portion Length | 3.000 INCHES NOMINAL IN |
| Scale Type | DIAL |
| Case Type | SHOCK PROOF |
| Mounting Bolt Circle Diameter | 4.250 INCHES NOMINAL IN |
| Bulb Quantity | 1 |
| Material | ALUMINUM METER CASE |
| 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 |
|---|---|
| 35T8478K51E000020020/240F PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 35-T8478K51E0200-20-240DEG | 5/9 Secondary reference Ashcroft Inc Dba Heise |
NSN 6685-01-121-0571 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 6685-01-121-0571 has 1 manufacturer part number on file: 35T8478K51E000020020/240F (Ashcroft Inc Dba Heise).
Key specifications for 35T8478K51E000020020/240F: Flexible Tube Length: 240.000 INCHES NOMINAL IN; Bulb Type: PLAIN RIGID; Active Portion Diameter: 0.375 INCHES NOMINAL IN; Bulb Connection Type: UNION. 16 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.