The Pyrometer,indicating, cataloged under National Stock Number 6685-00-063-8977, 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 Cosmodyne, Llc Dba Cosmodyne Llc. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-063-8977 |
| Primary Part Number | 257444000 |
| Item Name | Pyrometer,indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Cosmodyne, Llc Dba Cosmodyne Llc |
| Status | ACTIVE |
| Overall Diameter | 2.800 INCHES NOMINAL IN |
| Scale Calibration | CALIBRATED FOR THERMOCOUPLES WITH EXTERNAL RESISTANCE OF 10 OHMS |
| Scale Smallest Increment | 10.0 DEG CELSIUS AND 10.0 DEG FAHRENHEIT |
| Scale Accuracy Rating | 2 PCT ENTIRE RANGE |
| Measurement Type | MILLIVOLT CIRCUIT |
| Pointer/pen Type and Quantity | 1 INDICATING SINGLE |
| Case Type | HERMETICALLY SEALED |
| Mounting Bolt Circle Diameter | 2.440 INCHES NOMINAL IN |
| Scale Measurement Range | +0.000 TO 750.000 DEG FAHRENHEIT |
| Material | PLASTIC PHENOLIC 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 |
|---|---|
| 257444000 PRIMARY | Cosmodyne, Llc Dba Cosmodyne Llc (USA) |
| Reference | Meaning |
|---|---|
| 3200586-1 | 5/9 Secondary reference Cosmodyne, Llc Dba Cosmodyne Llc |
NSN 6685-00-063-8977 is a Pyrometer,indicating, manufactured by Cosmodyne, Llc Dba Cosmodyne Llc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-063-8977 has 1 manufacturer part number on file: 257444000 (Cosmodyne, Llc Dba Cosmodyne Llc).
Key specifications for 257444000: Overall Diameter: 2.800 INCHES NOMINAL IN; Scale Calibration: CALIBRATED FOR THERMOCOUPLES WITH EXTERNAL RESISTANCE OF 10 OHMS; Scale Smallest Increment: 10.0 DEG CELSIUS AND 10.0 DEG FAHRENHEIT; Scale Accuracy Rating: 2 PCT ENTIRE RANGE. 10 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.