NSN 6685-01-592-6323 · NIIN 015926323 · Part number 1621A-S
Hart Scientific Llc · FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments · FSG 66 — Instruments and Laboratory Equipment · CAGE 64841
Government record, cited
NSN 6685-01-592-6323 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-592-6323. Manufacturer of record part number: 1621A-S.
Also searched as6685-01-592-6323 ·
6685015926323 ·
NIIN 015926323 ·
01-592-6323 ·
FSC 6685 Pressure, Temperature, and Humidity Measuring and Controlling Instruments · CAGE 64841 · 1621A-S
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 1621A-S
Manufacturer: Hart Scientific Llc
General Description
The Hygrometer,digital, cataloged under National Stock Number 6685-01-592-6323, 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 4 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.
Technical Specifications
Parameter
Value
NSN
6685-01-592-6323
Primary Part Number
1621A-S
Item Name
Hygrometer,digital
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Manufacturer
Hart Scientific Llc
Status
ACTIVE
Measurement Type
THERMOELECTRICAL CIRCUIT
Style Designator
PORTABLE, BENCH
Display Type
LIQUID CRYSTAL
Environmental Attribute Code
BAROMETERS & HYGROMETERS - CONSUMER PRODUCTS - NON-MERCURY ALTERNATIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6685-00-001-1475
6685-00-001-1475 · Item name not on file
6685-00-001-1503
CONTROL,TOTALIZER
6685-00-001-1643
6685-00-001-1643 · Item name not on file
6685-00-001-1711
GAGE,PRESSURE,DIAL INDICATING
6685-00-001-2099
6685-00-001-2099 · Item name not on file
6685-00-001-2100
6685-00-001-2100 · Item name not on file
6685-00-001-2101
6685-00-001-2101 · Item name not on file
6685-00-001-2102
6685-00-001-2102 · Item name not on file
Frequently Asked Questions
What is NSN 6685-01-592-6323?
NSN 6685-01-592-6323 is a Hygrometer,digital, manufactured by Hart Scientific Llc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What part numbers are listed for NSN 6685-01-592-6323?
NSN 6685-01-592-6323 has 1 manufacturer part number on file: 1621A-S (Hart Scientific Llc).
What are the specifications of 1621A-S?
Key specifications for 1621A-S: Overall Height: 125.0 MILLIMETERS NOMINAL MM; Measurement Type: THERMOELECTRICAL CIRCUIT; Style Designator: PORTABLE, BENCH; Overall Length: 51.0 MILLIMETERS NOMINAL MM. 4 specifications are documented in the U.S. Government catalog.
Is NSN 6685-01-592-6323 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.