The Thermometer,self-Indicating, cataloged under National Stock Number 6685-01-360-2591, 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 Sigma Products & Mfg. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-360-2591 |
| Primary Part Number | 5-09241 |
| Item Name | Thermometer,self-Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Sigma Products & Mfg |
| Status | ACTIVE |
| Design Type | FLUCTUATINGFLUCTUATING |
| Overall Diameter | 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN |
| Style Designator | CUP CASE |
| Actuating Medium | MERCURYMERCURY |
| Securing Device Type | RINGRING |
| Scale Type | ETCHED STEMETCHED STEM |
| Scale Measurement Range | +0.000 TO 180.000 DEG FAHRENHEIT+0.000 TO 180.000 DEG FAHRENHEIT |
| Scale Length | 12.000 INCHES NOMINAL12.000 INCHES NOMINAL IN |
| Material | WOOD METER CASE |
| 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 |
|---|---|
| 5-09241 PRIMARY | Sigma Products & Mfg (USA) |
| Reference | Meaning |
|---|---|
| 5-09241 | 5/9 Secondary reference Psg Controls, Inc. |
NSN 6685-01-360-2591 is a Thermometer,self-Indicating, manufactured by Sigma Products & Mfg, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-360-2591 has 1 manufacturer part number on file: 5-09241 (Sigma Products & Mfg).
1 possible match (shared part number, not a government interchangeability claim): 6220-01-532-0548. Verify interchangeability with system specifications before substitution.
Key specifications for 5-09241: Design Type: FLUCTUATINGFLUCTUATING; Overall Diameter: 0.750 INCHES NOMINAL0.750 INCHES NOMINAL IN; Style Designator: CUP CASE; Overall Length: 14.500 INCHES NOMINAL14.500 INCHES NOMINAL IN. 9 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.