The Indicator,temperature-Humidity,e, cataloged under National Stock Number 6685-01-657-6578, 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 Mcmaster-Carr Supply Company. Government technical data includes 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-657-6578 |
| Primary Part Number | 3993K61 |
| Item Name | Indicator,temperature-Humidity,e |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Mcmaster-Carr Supply Company |
| Status | ACTIVE |
| Scale Marking | NUMERALS |
| Accuracy Rating | 1.0 DEG CELSIUS FIRST INDICATOR SECOND SCALE |
| Accuracy Rating | 1.8 DEG FAHRENHEIT FIRST INDICATOR FIRST SCALE |
| Accuracy Rating | 2.5 PERCENT SECOND INDICATOR SINGLE SCALE |
| Scale Range | +10.0 TO 170.0 DEG FAHRENHEIT FIRST INDICATOR FIRST SCALE |
| Scale Range | -12.0 TO 75.0 DEG CELSIUS FIRST INDICATOR SECOND SCALE |
| Mounting Hole Diameter | 0.125 INCHES NOMINAL IN |
| Scale Marking Transparency | NONLUMINOUS |
| Dial Outside Diameter | 5.0 INCHES NOMINAL IN |
| Pointer Type | INDICATING ALL POINTERS |
| Presentation Type | DIAL |
| Material | ALUMINUM 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 |
|---|---|
| 3993K61 PRIMARY | Mcmaster-Carr Supply Company (USA) |
NSN 6685-01-657-6578 is a Indicator,temperature-Humidity,e, manufactured by Mcmaster-Carr Supply Company, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-657-6578 has 1 manufacturer part number on file: 3993K61 (Mcmaster-Carr Supply Company).
Key specifications for 3993K61: Scale Marking: NUMERALS; Accuracy Rating: 1.0 DEG CELSIUS FIRST INDICATOR SECOND SCALE; Accuracy Rating: 1.8 DEG FAHRENHEIT FIRST INDICATOR FIRST SCALE; Accuracy Rating: 2.5 PERCENT SECOND INDICATOR SINGLE SCALE. 12 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.