PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81GK-Y00R-W25YThermometer,indicating,capillary

Weksler Glass Thermometer Corp · NSN 6685-00-428-8789 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-428-8789 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-428-8789. Primary manufacturer part number: 81GK-Y00R-W25Y.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • Scale Inscription/background Color: BLACK MARKING ON YELLOW
  • Case Type: DUSTPROOF
  • Bulb Connection Type: THREADED
  • Scale Smallest Increment: 10.0 DEG FAHRENHEIT
  • Active Portion Length: 3.500 INCHES NOMINAL IN
  • Style Designator: BULB W/O SOCKET
  • Material: PLASTIC METER CASE
Applications
  • Applications requiring Plastic Meter Case construction
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-428-8789, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Weksler Glass Thermometer Corp. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-428-8789
Primary Part Number81GK-Y00R-W25Y
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerWeksler Glass Thermometer Corp
StatusCANCELLED
Scale Inscription/background ColorBLACK MARKING ON YELLOW
Case TypeDUSTPROOF
Bulb Connection TypeTHREADED
Scale Smallest Increment10.0 DEG FAHRENHEIT
Active Portion Length3.500 INCHES NOMINAL IN
Style DesignatorBULB W/O SOCKET
MaterialPLASTIC METER CASE
Bulb Quantity1
Dial Diameter8.500 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING BULB
Indicator Connection MethodFLEXIBLE TUBE
Active Portion Diameter0.933 INCHES NOMINAL IN
Bulb Tip Length3.500 INCHES NOMINAL IN
Bulb Overall Length4.000 INCHES NOMINAL IN
Actuating MediumGAS
Bulb TypePLAIN RIGID
Bulb StylePLAIN BULB W/BENDABLE EXTENSION
Scale Measurement Range+400.000 TO 1200.000 DEG FAHRENHEIT
Extension Neck Length0.500 INCHES NOMINAL IN
Case Diameter10.250 INCHES NOMINAL IN
Flexible Tube Length300.000 INCHES NOMINAL IN
Pointer/pen Type and Quantity1 INDICATING SINGLE AND 1 REFERENCE SINGLE
Scale TypeCONCENTRIC DIAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-007-959381GNN00RW75Y INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-147-584181GN-N00U-W40Y INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-469-8891 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-00-475-223681GN-P00U-W45Y INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-477-2169 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-00-491-816641GHV00LA80Y INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-491-821741GN-P00R-R65Y INTERCHANGEABLE
Thermometer,indicating,capillary
Ashcroft Inc Dba Heise
6685-00-491-8220 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-01-262-0036 INTERCHANGEABLE
Thermometer,self-Indicating,gas
6685-01-262-0045 INTERCHANGEABLE
Thermometer,self-Indicating,bime
Cross-Reference Index
Part NumberManufacturer
81GK-Y00R-W25Y PRIMARY Weksler Glass Thermometer Corp (USA)
M27-400 Weksler Glass Thermometer Corp (USA)
Related Parts
6685-00-007-9593INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GNN00RW75Y
6685-00-147-5841INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GN-N00U-W40Y
6685-00-469-8891INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-475-2236INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GN-P00U-W45Y
6685-00-477-2169INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-491-8166INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GHV00LA80Y
6685-00-491-8217INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GN-P00R-R65Y
6685-00-491-8220INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-01-262-0036INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,GAS
6685-01-262-0045INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
6685-01-357-9082INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GH-V00R-A70W
6685-01-374-0348INTERCHANGEABLE
THERMOMETER,SELF-INDICATING
41GPY00R050Y

Frequently Asked Questions

What is NSN 6685-00-428-8789?

NSN 6685-00-428-8789 is a Thermometer,indicating,capillary, manufactured by Weksler Glass Thermometer Corp, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-428-8789?

NSN 6685-00-428-8789 has 2 cross-referenced part numbers: 81GK-Y00R-W25Y (Weksler Glass Thermometer Corp), M27-400 (Weksler Glass Thermometer Corp).

What NSN replaces 6685-00-428-8789?

There are 12 known substitutes for 6685-00-428-8789: 6685-00-007-9593, 6685-00-147-5841, 6685-00-469-8891 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81GK-Y00R-W25Y?

Key specifications for 81GK-Y00R-W25Y: Scale Inscription/background Color: BLACK MARKING ON YELLOW; Case Type: DUSTPROOF; Bulb Connection Type: THREADED; Scale Smallest Increment: 10.0 DEG FAHRENHEIT. 23 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-428-8789 still in active supply?

NSN 6685-00-428-8789 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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