The Indicator,temperature-Humidity,e, cataloged under National Stock Number 6685-01-535-3216, 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 Hart Scientific Llc. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-535-3216 |
| Primary Part Number | 1620-S |
| Item Name | Indicator,temperature-Humidity,e |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Hart Scientific Llc |
| Status | ACTIVE |
| Length | 2.000 INCHES NOMINAL IN |
| Current Type | DC |
| DC Voltage Rating | 12.0 VOLTS NOMINAL |
| Presentation Type | DIGITAL DISPLAY |
| Display Type | LIGHT EMITTING DIODE (L.E.D.). |
| Height | 4.900 INCHES NOMINAL IN |
| Width | 8.300 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
NSN 6685-01-535-3216 is a Indicator,temperature-Humidity,e, manufactured by Hart Scientific Llc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-535-3216 has 2 manufacturer part numbers on file: 1620-S (Hart Scientific Llc), 1620-S (Technical Communities, Inc. Dba Technical Communities Inc Div Testmart).
Key specifications for 1620-S: Length: 2.000 INCHES NOMINAL IN; Current Type: DC; DC Voltage Rating: 12.0 VOLTS NOMINAL; Presentation Type: DIGITAL DISPLAY. 7 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.