The Thermostat Assembly, cataloged under National Stock Number 6680-01-159-5345, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Trac Regulator Co., Inc. Dba Trac Regulator Co Inc. Government technical data includes 1 specification, 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 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 | 6680-01-159-5345 |
| Primary Part Number | 50198-05 |
| Item Name | Thermostat Assembly |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| Status | ACTIVE |
| General Characteristics Item Description | ALL MACHINED SURFACES 125 MICROINCH FINISH; TEMPERATURE RANGE 60 TO O 100 DEG F; FIVE FEET LENGTH CAPILLARY TUBING DEGF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 50198-05 PRIMARY | Trac Regulator Co., Inc. Dba Trac Regulator Co Inc (USA) |
NSN 6680-01-159-5345 is a Thermostat Assembly, manufactured by Trac Regulator Co., Inc. Dba Trac Regulator Co Inc, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-159-5345 has 1 manufacturer part number on file: 50198-05 (Trac Regulator Co., Inc. Dba Trac Regulator Co Inc).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-406-4555. Verify interchangeability with system specifications before substitution.
Key specifications for 50198-05: General Characteristics Item Description: ALL MACHINED SURFACES 125 MICROINCH FINISH; TEMPERATURE RANGE 60 TO O 100 DEG F; FIVE FEET LENGTH CAPILLARY TUBING DEGF; End Item Identification: TRAC REGULATOR CO,OXYGEN REGULATOR,MODEL NO. 40416. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.