General Characteristics Item Description: 1/2 IN. DIA BY 5 IN. LG WITH A 3/4 IN. BY 16 IN. WELDED-ON MOUNTING ADAPTER FOR HYGROMETER END; NO ADAPTER FOR PROBE END; 5 FT. STANDARD CABLE WITH POLYVINYL CHLORIDE COVERING MATERIAL IN
Identification
NSN: 6685-01-137-4666
NIIN: 011374666
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Probe,hygrometer, cataloged under National Stock Number 6685-01-137-4666, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6685-01-137-4666
Item Name
Probe,hygrometer
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Status
ACTIVE
General Characteristics Item Description
1/2 IN. DIA BY 5 IN. LG WITH A 3/4 IN. BY 16 IN. WELDED-ON MOUNTING ADAPTER FOR HYGROMETER END; NO ADAPTER FOR PROBE END; 5 FT. STANDARD CABLE WITH POLYVINYL CHLORIDE COVERING MATERIAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
DY-150
3/9Design control — primary reference
Ondyne Inc
No interchangeability data on file.
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 6685-01-137-4666?
NSN 6685-01-137-4666 is a Probe,hygrometer, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What are the specifications of 6685-01-137-4666?
Key specifications for 6685-01-137-4666: General Characteristics Item Description: 1/2 IN. DIA BY 5 IN. LG WITH A 3/4 IN. BY 16 IN. WELDED-ON MOUNTING ADAPTER FOR HYGROMETER END; NO ADAPTER FOR PROBE END; 5 FT. STANDARD CABLE WITH POLYVINYL CHLORIDE COVERING MATERIAL IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 6685-01-137-4666 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.