PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81GK-Y00R-W63YThermometer,indicating,capillary

Ashcroft Inc Dba Heise · NSN 6685-00-453-5877 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-453-5877 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-453-5877. Primary manufacturer part number: 81GK-Y00R-W63Y.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • Extension Neck Length: 18.000 INCHES NOMINAL IN
  • Case Type: DUSTPROOF
  • Scale Type: CONCENTRIC DIAL
  • Indicator Connection Method: FLEXIBLE TUBE
  • Scale Smallest Increment: 10.0 DEG FAHRENHEIT
  • Material: STEEL CORROSION RESISTING BULB
  • Material: PLASTIC METER CASE
Applications
  • Applications requiring Steel Corrosion Resisting Bulb construction
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-453-5877, 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 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-453-5877
Primary Part Number81GK-Y00R-W63Y
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Extension Neck Length18.000 INCHES NOMINAL IN
Case TypeDUSTPROOF
Scale TypeCONCENTRIC DIAL
Indicator Connection MethodFLEXIBLE TUBE
Scale Smallest Increment10.0 DEG FAHRENHEIT
MaterialSTEEL CORROSION RESISTING BULB
MaterialPLASTIC METER CASE
Style DesignatorBULB W/O SOCKET
Active Portion Diameter0.933 INCHES NOMINAL IN
Bulb Overall Length19.000 INCHES NOMINAL IN
Scale Inscription/background ColorBLACK MARKING ON YELLOW BACKGROUND
Bulb TypePLAIN RIGID
Bulb Connection TypeTHREADED
Actuating MediumGAS
Case Diameter10.250 INCHES NOMINAL IN
Bulb StylePLAIN BULB W/BENDABLE EXTENSION
Flexible Tube Length756.000 INCHES NOMINAL IN
Bulb Quantity1
Dial Diameter8.500 INCHES NOMINAL IN
Bulb Tip Length3.000 INCHES NOMINAL IN
Active Portion Length3.000 INCHES NOMINAL IN
Scale Measurement Range+400.000 TO 1200.000 DEG FAHRENHEIT
Pointer/pen Type and Quantity1 INDICATING SINGLE AND 1 REFERENCE SINGLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6685-00-115-920681GJ-Y00R-W40Y INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-453-587241GJ-Y00L-W25Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
6685-00-453-587841GK-Y00L-R10Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
6685-00-453-588041GJ-Y00R-W40Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
6685-00-453-588181GJ-Y00R-W25Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
6685-00-483-860381GK-Y00R-W50Y INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-483-860481GK-Y00R-W45Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
6685-00-483-860585-T8478K-54E-000-0350-400/1200 INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-483-860745-T8478K-51E-000-0630-50/550 INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-488-558581GN-N00R-W40Y INTERCHANGEABLE
No Item Name Available
Weksler Glass Thermometer Corp
Cross-Reference Index
Part NumberManufacturer
81GK-Y00R-W63Y PRIMARY Ashcroft Inc Dba Heise (USA)
81GK-Y00R-W63Y Weksler Glass Thermometer Corp (USA)
M27-196REVP Weksler Glass Thermometer Corp (USA)
8-1MKY00RW63Y Weksler Glass Thermometer Corp (USA)
Related Parts
6685-00-115-9206INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GJ-Y00R-W40Y
6685-00-453-5872INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GJ-Y00L-W25Y
6685-00-453-5878INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-Y00L-R10Y
6685-00-453-5880INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GJ-Y00R-W40Y
6685-00-453-5881INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GJ-Y00R-W25Y
6685-00-483-8603INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GK-Y00R-W50Y
6685-00-483-8604INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GK-Y00R-W45Y
6685-00-483-8605INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
85-T8478K-54E-000-0350-400/1200
6685-00-483-8607INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
45-T8478K-51E-000-0630-50/550
6685-00-488-5585INTERCHANGEABLE
NO ITEM NAME AVAILABLE
81GN-N00R-W40Y
6685-00-522-8389INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-Y00R-W30Y
6685-00-522-8394INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-Y00R-O30Y

Frequently Asked Questions

What is NSN 6685-00-453-5877?

NSN 6685-00-453-5877 is a Thermometer,indicating,capillary, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-453-5877?

NSN 6685-00-453-5877 has 4 cross-referenced part numbers: 81GK-Y00R-W63Y (Ashcroft Inc Dba Heise), 81GK-Y00R-W63Y (Weksler Glass Thermometer Corp), M27-196REVP (Weksler Glass Thermometer Corp), 8-1MKY00RW63Y (Weksler Glass Thermometer Corp).

What NSN replaces 6685-00-453-5877?

There are 12 known substitutes for 6685-00-453-5877: 6685-00-115-9206, 6685-00-453-5872, 6685-00-453-5878 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81GK-Y00R-W63Y?

Key specifications for 81GK-Y00R-W63Y: Extension Neck Length: 18.000 INCHES NOMINAL IN; Case Type: DUSTPROOF; Scale Type: CONCENTRIC DIAL; Indicator Connection Method: FLEXIBLE TUBE. 23 total characteristics are documented in the Federal Logistics Information System.

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