FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Psychrometer, cataloged under National Stock Number 6685-01-100-1672, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
Psychrometer
FSC / FSG
6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments (FSG 66)
Technical Specifications
Parameter
Value
NSN
6685-01-100-1672
Item Name
Psychrometer
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
⇄Related Items5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
6515-01-183-2092POSSIBLE MATCH
SYRINGE,HYPODERMIC
Possible match (shared part number)
3110-01-288-10089086100062POSSIBLE MATCH
BEARING,ROLLER,NEEDLE
Possible match (shared part number)Grove U.s. Llc Dba Grove Us Llc
5330-01-395-5156POSSIBLE MATCH
SEAL,PLAIN ENCASED
Possible match (shared part number)
5950-01-436-91555662POSSIBLE MATCH
COIL,RADIO FREQUENCY
Possible match (shared part number)Prem Magnetics Inc
3431-01-666-43045662POSSIBLE MATCH
TRIGGER,WELDER
Possible match (shared part number)Bernard Welding
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
566-2
5/9Secondary reference
Smiths Detection Inc. Dba Smiths Detection Inc Casc
566-2
3/2Design control — primary reference
U.S. Government activity
Related Parts
6515-01-183-2092POSSIBLE MATCH
SYRINGE,HYPODERMIC
3110-01-288-1008POSSIBLE MATCH
BEARING,ROLLER,NEEDLE
9086100062
5330-01-395-5156POSSIBLE MATCH
SEAL,PLAIN ENCASED
5950-01-436-9155POSSIBLE MATCH
COIL,RADIO FREQUENCY
5662
3431-01-666-4304POSSIBLE MATCH
TRIGGER,WELDER
5662
Frequently Asked Questions
What is NSN 6685-01-100-1672?
NSN 6685-01-100-1672 is a Psychrometer, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What NSN replaces 6685-01-100-1672?
5 possible matches (shared part number, not a government interchangeability claim): 6515-01-183-2092, 3110-01-288-1008, 5330-01-395-5156. Verify interchangeability with system specifications before substitution.
Is NSN 6685-01-100-1672 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.