PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-T-19646Thermometer,thermostat Tester

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6685-01-022-6096 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-022-6096 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-022-6096. Primary manufacturer part number: MIL-T-19646.
Features
  • Thermometer,thermostat Tester — FSC 6685
  • 5 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermometer,thermostat Tester, cataloged under National Stock Number 6685-01-022-6096, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameThermometer,thermostat Tester
FSC / FSG6685 — No Item Name Available (FSG 66)
ManufacturersMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M (CAGE 81349); Inland Mfg Co (CAGE 92418); Therm Processes Inc (CAGE 63427); Inland Radiator Equipment Inc (CAGE 62729); Ashcroft Inc Dba Heise (CAGE 38056)
Technical Specifications
ParameterValue
NSN6685-01-022-6096
Primary Part NumberMIL-T-19646
Item NameThermometer,thermostat Tester
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6685-00-522-8834 INTERCHANGEABLE
Thermometer,indicating,capillary
Cross-Reference Index
Part NumberManufacturer
MIL-T-19646 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
678A Inland Mfg Co (USA)
TP0678T Therm Processes Inc (USA)
678A Inland Radiator Equipment Inc (USA)
41GK-Y00R-A40Y Ashcroft Inc Dba Heise (USA)
Related Parts
6685-00-522-8834INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY

Frequently Asked Questions

What is NSN 6685-01-022-6096?

NSN 6685-01-022-6096 is a Thermometer,thermostat Tester, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-022-6096?

NSN 6685-01-022-6096 has 5 cross-referenced part numbers: MIL-T-19646 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 678A (Inland Mfg Co), TP0678T (Therm Processes Inc), 678A (Inland Radiator Equipment Inc), 41GK-Y00R-A40Y (Ashcroft Inc Dba Heise).

What NSN replaces 6685-01-022-6096?

There is 1 known substitute for 6685-01-022-6096: 6685-00-522-8834. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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