The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-419-0643, 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 Weksler Glass Thermometer Corp. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-419-0643 |
| Primary Part Number | 43GL-P00L-WAAY |
| Item Name | Thermometer,indicating,capillary |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Weksler Glass Thermometer Corp |
| Status | ACTIVE |
| Flexible Tube Length | 120.000 INCHES NOMINAL IN |
| Bulb Overall Length | 10.000 INCHES NOMINAL IN |
| Bulb Type | PLAIN RIGID |
| Active Portion Diameter | 0.975 INCHES NOMINAL IN |
| Scale Inscription/background Color | BLACK MARKING ON YELLOW |
| Scale Smallest Increment | 10.0 DEG FAHRENHEIT |
| Bulb Connection Type | INTEGRAL FLANGE |
| Dial Diameter | 4.500 INCHES NOMINAL IN |
| Indicator Connection Method | RIGID STEM WITH SWIVEL |
| Style Designator | BULB W/O SOCKET |
| Case Diameter | 5.875 INCHES NOMINAL IN |
| Actuating Medium | GAS |
| Pointer/pen Type and Quantity | 1 INDICATING SINGLE AND 1 REFERENCE SINGLE |
| Active Portion Length | 3.500 INCHES NOMINAL IN |
| Extension Neck Length | 6.500 INCHES NOMINAL IN |
| Scale Type | CONCENTRIC DIAL |
| Case Type | DUSTPROOF |
| Scale Measurement Range | +400.000 TO 1200.000 DEG FAHRENHEIT |
| Bulb Quantity | 1 |
| Bulb Tip Length | 3.500 INCHES NOMINAL IN |
| Bulb Style | PLAIN BULB W/BENDABLE EXTENSION |
| 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 |
|---|---|
| 45-T8478K-40E-010-400 -1200F | Ashcroft Inc Dba Heise (USA) |
| 43GL-P00L-WAAY PRIMARY | Weksler Glass Thermometer Corp (USA) |
| 41GL-P00U-W10Y | Weksler Glass Thermometer Corp (USA) |
| Reference | Meaning |
|---|---|
| M27-400REVD | 5/1 Secondary reference Weksler Glass Thermometer Corp |
| MIL-T-19646 | 4/1 Identification reference U.S. Government activity |
NSN 6685-00-419-0643 is a Thermometer,indicating,capillary, manufactured by Weksler Glass Thermometer Corp, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-419-0643 has 3 manufacturer part numbers on file: 45-T8478K-40E-010-400 -1200F (Ashcroft Inc Dba Heise), 43GL-P00L-WAAY (Weksler Glass Thermometer Corp), 41GL-P00U-W10Y (Weksler Glass Thermometer Corp).
7 possible matches (shared part number, not a government interchangeability claim): 6685-00-422-2192, 6685-00-422-2201, 6685-00-459-4319. Verify interchangeability with system specifications before substitution.
Key specifications for 43GL-P00L-WAAY: Flexible Tube Length: 120.000 INCHES NOMINAL IN; Bulb Overall Length: 10.000 INCHES NOMINAL IN; Bulb Type: PLAIN RIGID; Active Portion Diameter: 0.975 INCHES NOMINAL IN. 23 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.