PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

45-T8478K-54E-350-0250-20-240FThermometer,indicating,capillary

Ashcroft Inc Dba Heise · NSN 6685-00-483-8601 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-483-8601 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-483-8601. Primary manufacturer part number: 45-T8478K-54E-350-0250-20-240F.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • Bulb Type: PLAIN RIGID
  • Scale Type: CONCENTRIC DIALCONCENTRIC DIAL
  • Material: ALUMINUM METER CASE
  • Material: STEEL CORROSION RESISTING BULB
  • Style Designator: BULB W/O SOCKET
  • Scale Smallest Increment: 2.0 DEG FAHRENHEIT
  • Flexible Tube Length: 300.000 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Meter Case construction
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-483-8601, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-483-8601
Primary Part Number45-T8478K-54E-350-0250-20-240F
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusCANCELLED
Bulb TypePLAIN RIGID
Scale TypeCONCENTRIC DIALCONCENTRIC DIAL
MaterialALUMINUM METER CASE
MaterialSTEEL CORROSION RESISTING BULB
Style DesignatorBULB W/O SOCKET
Scale Smallest Increment2.0 DEG FAHRENHEIT
Flexible Tube Length300.000 INCHES NOMINAL IN
Dial Diameter4.500 INCHES NOMINAL4.500 INCHES NOMINAL IN
Bulb Overall Length6.000 INCHES NOMINAL6.000 INCHES NOMINAL IN
Bulb Quantity11
Bulb Connection TypeUNION
Scale Inscription/background ColorBLACK MARKING ON YELLOW BACKGROUND
Actuating MediumGASGAS
Indicator Connection MethodFLEXIBLE TUBE
Scale Measurement Range+20.000 TO 240.000 DEG FAHRENHEIT+20.000 TO 240.000 DEG FAHRENHEIT
Case Diameter5.875 INCHES NOMINAL5.875 INCHES NOMINAL IN
Bulb StylePLAIN BULB
Active Portion Length3.500 INCHES NOMINAL3.500 INCHES NOMINAL IN
Pointer/pen Type and Quantity1 INDICATING SINGLE AND 1 REFERENCE SINGLE
Active Portion Diameter0.933 INCHES NOMINAL IN
Bulb Tip Length6.000 INCHES NOMINAL IN
Extension Neck Length2.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
6685-00-453-5870 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-00-453-587941GK-YX0R-F30Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
6685-00-459-898441GK-Y00R-A60Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
6685-00-477-2169 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-00-483-860045-T8478K-54E-000-0600-20-240DEG INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-483-860241GK-Y00R-A20Y INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-522-882341GK-Y00R-A10Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
6685-00-522-8834 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-00-522-8835 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-00-522-8843 INTERCHANGEABLE
Thermometer,indicating,capillary
Cross-Reference Index
Part NumberManufacturer
45-T8478K-54E-350-0250-20-240F Ashcroft Inc Dba Heise (USA)
M27-400REVC Weksler Glass Thermometer Corp (USA)
ITR-45-24-A-025-33-0 Moeller Instrument Company, Inc. Dba Moeller Instrument Co (USA)
MIL-T-19646 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
6685PL1378209 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
6685-00-453-5870INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-453-5879INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-YX0R-F30Y
6685-00-459-8984INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-Y00R-A60Y
6685-00-477-2169INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-483-8600INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
45-T8478K-54E-000-0600-20-240DEG
6685-00-483-8602INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-Y00R-A20Y
6685-00-522-8823INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-Y00R-A10Y
6685-00-522-8834INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-522-8835INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-522-8843INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY

Frequently Asked Questions

What is NSN 6685-00-483-8601?

NSN 6685-00-483-8601 is a Thermometer,indicating,capillary, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-483-8601?

NSN 6685-00-483-8601 has 5 cross-referenced part numbers: 45-T8478K-54E-350-0250-20-240F (Ashcroft Inc Dba Heise), M27-400REVC (Weksler Glass Thermometer Corp), ITR-45-24-A-025-33-0 (Moeller Instrument Company, Inc. Dba Moeller Instrument Co), MIL-T-19646 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 6685PL1378209 (Jednolity Indeks Materialowy - Uniform Material Index).

What NSN replaces 6685-00-483-8601?

There are 10 known substitutes for 6685-00-483-8601: 6685-00-453-5870, 6685-00-453-5879, 6685-00-459-8984 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 45-T8478K-54E-350-0250-20-240F?

Key specifications for 45-T8478K-54E-350-0250-20-240F: Bulb Type: PLAIN RIGID; Scale Type: CONCENTRIC DIALCONCENTRIC DIAL; Material: ALUMINUM METER CASE; Material: STEEL CORROSION RESISTING BULB. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-483-8601 still in active supply?

NSN 6685-00-483-8601 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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