The Thermowell, cataloged under National Stock Number 6685-01-169-5243, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-169-5243 |
| Item Name | Thermowell |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Bulb Tip Outside Diameter | 0.625 INCHES NOMINAL IN |
| Bulb Tip Length | 2.000 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| M24270/1-E2CRES | 2/2 Government specification standardization U.S. Government activity |
| MIL-T-24270/1 | 4/1 Identification reference U.S. Government activity |
NSN 6685-01-169-5243 is a Thermowell, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 6685-01-246-5847, 6685-01-615-6742. Verify interchangeability with system specifications before substitution.
Key specifications for 6685-01-169-5243: Overall Length: 3.312 INCHES NOMINAL IN; Bulb Tip Outside Diameter: 0.625 INCHES NOMINAL IN; Bulb Tip Length: 2.000 INCHES NOMINAL IN; Special Features: REMOVABLE BRASS CUP AFFIXED W/CHAIN:NOT PROVIDED;. 3 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.