Functional Description: TO USE REMOVE THE PROTECTIVE COVER, PRESS THE ON BUTTON AND INSET AT LEAST 1/2 INCH OF THE STEM INTO THE TESTING AREA; BY PUSHING THE ON/DH (DATA HOLD) BUTTON A SECOND TIME THE TEMPERATURE READING WILL AUTOMATICALLY BE HELD ON THE LCD DISPLAY; DEG F WILL BLINK WHEN DH IS IN OPERATION; PRESSING THE ON/DH BUTTON A THIRD TIME WILL RETURN THE THERMOMETER TO NORMAL OPERATION IN
Environmental Attribute Code: NON-MERCURY ALTERNATIVE - MEDICAL PRODUCTS - THERMOMETERS
Measurement Range: -40.0 TO 300.0 DEG FAHRENHEIT
Identification
NSN: 6685-01-457-7640
NIIN: 014577640
FSC: 6685 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
FSG: 66 — Instruments and Laboratory Equipment
General Description
The Thermometer,self-Indicating,digi, cataloged under National Stock Number 6685-01-457-7640, 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 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
6685-01-457-7640
Item Name
Thermometer,self-Indicating,digi
FSC / FSG
6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments
Status
ACTIVE
Display Type
LIQUID CRYSTAL
Functional Description
TO USE REMOVE THE PROTECTIVE COVER, PRESS THE ON BUTTON AND INSET AT LEAST 1/2 INCH OF THE STEM INTO THE TESTING AREA; BY PUSHING THE ON/DH (DATA HOLD) BUTTON A SECOND TIME THE TEMPERATURE READING WILL AUTOMATICALLY BE HELD ON THE LCD DISPLAY; DEG F WILL BLINK WHEN DH IS IN OPERATION; PRESSING THE ON/DH BUTTON A THIRD TIME WILL RETURN THE THERMOMETER TO NORMAL OPERATION IN
Environmental Attribute Code
NON-MERCURY ALTERNATIVE - MEDICAL PRODUCTS - THERMOMETERS
Measurement Range
-40.0 TO 300.0 DEG FAHRENHEIT
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
300LK
5/9Secondary reference
Air-a-Plane Corp
T101-50-03
3/9Design control — primary reference
Air-a-Plane Corp
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
GAGE,VACUUM,INDICATING
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
Related Parts in Instruments and Laboratory Equipment
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
460R-K MONEL
6685-00-001-2099
GAGE,VACUUM,INDICATING
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 6685-01-457-7640?
NSN 6685-01-457-7640 is a Thermometer,self-Indicating,digi, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
What are the specifications of 6685-01-457-7640?
Key specifications for 6685-01-457-7640: Display Type: LIQUID CRYSTAL; Special Features: AUTOMATICALLY TURNS OFF AFTER 35 MINUTES; RESOLUTION 0.1 DEG F; ACCURACY 1% FULL SCALE; SAMPLING TIME 1.0 SECOND; 1.5 V BATTERY V; Functional Description: TO USE REMOVE THE PROTECTIVE COVER, PRESS THE ON BUTTON AND INSET AT LEAST 1/2 INCH OF THE STEM INTO THE TESTING AREA; BY PUSHING THE ON/DH (DATA HOLD) BUTTON A SECOND TIME THE TEMPERATURE READING WILL AUTOMATICALLY BE HELD ON THE LCD DISPLAY; DEG F WILL BLINK WHEN DH IS IN OPERATION; PRESSING THE ON/DH BUTTON A THIRD TIME WILL RETURN THE THERMOMETER TO NORMAL OPERATION IN; Environmental Attribute Code: NON-MERCURY ALTERNATIVE - MEDICAL PRODUCTS - THERMOMETERS. 4 specifications are documented in the U.S. Government catalog.
Is NSN 6685-01-457-7640 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.