The Control,temperature,indicating, cataloged under National Stock Number 6685-01-176-4398, 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 Chromalox Inc Dba Chromalox Precision Heat and Control, Inc. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-176-4398 |
| Primary Part Number | 328840 |
| Item Name | Control,temperature,indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
| Status | ACTIVE |
| Sensing Element Type | THERMOCOUPLE REMOTE |
| Maximum Overall Width | 6.125 INCHES IN |
| Maximum Overall Length | 6.125 INCHES IN |
| Maximum Overall Height | 3.750 INCHES IN |
| Power Source | SELF-CONTAINED |
| Operating Range | 0 TO 300 DEG F DEGF |
| 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 |
|---|---|
| 328840 PRIMARY | Chromalox Inc Dba Chromalox Precision Heat and Control, Inc (USA) |
| Reference | Meaning |
|---|---|
| E-AR1 | 5/9 Secondary reference Chromalox Inc Dba Chromalox Precision Heat and Control, Inc |
NSN 6685-01-176-4398 is a Control,temperature,indicating, manufactured by Chromalox Inc Dba Chromalox Precision Heat and Control, Inc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-176-4398 has 1 manufacturer part number on file: 328840 (Chromalox Inc Dba Chromalox Precision Heat and Control, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5965-01-708-6699. Verify interchangeability with system specifications before substitution.
Key specifications for 328840: Sensing Element Type: THERMOCOUPLE REMOTE; Maximum Overall Width: 6.125 INCHES IN; Maximum Overall Length: 6.125 INCHES IN; Maximum Overall Height: 3.750 INCHES IN. 6 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.