PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

41GK-Y00U-A40YThermometer,indicating,capillary

Weksler Glass Thermometer Corp · NSN 6685-00-522-8834 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-522-8834 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-522-8834. Primary manufacturer part number: 41GK-Y00U-A40Y.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • Bulb Style: PLAIN BULB W/BENDABLE EXTENSION
  • Active Portion Length: 3.500 INCHES NOMINAL IN
  • Bulb Tip Length: 3.500 INCHES NOMINAL IN
  • Style Designator: BULB W/O SOCKET
  • Material: STEEL CORROSION RESISTING BULB
  • Material: ALUMINUM METER CASE
  • Flexible Tube Length: 480.000 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Corrosion Resisting Bulb construction
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-522-8834, 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 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6685-00-522-8834
Primary Part Number41GK-Y00U-A40Y
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerWeksler Glass Thermometer Corp
StatusACTIVE
Bulb StylePLAIN BULB W/BENDABLE EXTENSION
Active Portion Length3.500 INCHES NOMINAL IN
Bulb Tip Length3.500 INCHES NOMINAL IN
Style DesignatorBULB W/O SOCKET
MaterialSTEEL CORROSION RESISTING BULB
MaterialALUMINUM METER CASE
Flexible Tube Length480.000 INCHES NOMINAL IN
Bulb TypePLAIN RIGID
Indicator Connection MethodFLEXIBLE TUBE
Case TypeDUSTPROOF
Actuating MediumGAS
Dial Diameter4.500 INCHES NOMINAL IN
Scale TypeCONCENTRIC DIAL
Pointer/pen Type and Quantity1 INDICATING SINGLE AND 1 REFERENCE SINGLE
Bulb Quantity1
Scale Inscription/background ColorBLACK MARKING ON YELLOW BACKGROUND
Active Portion Diameter0.935 INCHES NOMINAL IN
Scale Measurement Range-40.000 TO 180.000 DEG FAHRENHEIT
Scale Accuracy Rating1.3 PCT
Scale Smallest Increment2.0 DEG FAHRENHEIT
Extension Neck Length1.000 INCHES NOMINAL IN
Bulb Connection TypeUNION
Bulb Overall Length4.500 INCHES NOMINAL IN
Case Diameter5.593 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
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
6685-00-483-8601 INTERCHANGEABLE
Thermometer,indicating,capillary
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
6685-00-522-8835 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-00-522-8843 INTERCHANGEABLE
Thermometer,indicating,capillary
Cross-Reference Index
Part NumberManufacturer
41GK-Y00U-A40Y Weksler Glass Thermometer Corp (USA)
45-T8478K-54E-350-0400-040-180F Ashcroft Inc Dba Heise (USA)
MIL-T-19646 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M27-400REVC Weksler Glass Thermometer Corp (USA)
41GK-Y00R-A40Y Weksler Glass Thermometer Corp (USA)
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
6685-00-483-8601INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-483-8602INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-Y00R-A20Y
6685-00-522-8823INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
41GK-Y00R-A10Y
6685-00-522-8835INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-522-8843INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-01-022-6096INTERCHANGEABLE
THERMOMETER,THERMOSTAT TESTER

Frequently Asked Questions

What is NSN 6685-00-522-8834?

NSN 6685-00-522-8834 is a Thermometer,indicating,capillary, manufactured by Weksler Glass Thermometer Corp, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-522-8834?

NSN 6685-00-522-8834 has 5 cross-referenced part numbers: 41GK-Y00U-A40Y (Weksler Glass Thermometer Corp), 45-T8478K-54E-350-0400-040-180F (Ashcroft Inc Dba Heise), MIL-T-19646 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M27-400REVC (Weksler Glass Thermometer Corp), 41GK-Y00R-A40Y (Weksler Glass Thermometer Corp).

What NSN replaces 6685-00-522-8834?

There are 11 known substitutes for 6685-00-522-8834: 6685-00-453-5870, 6685-00-453-5879, 6685-00-459-8984 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 41GK-Y00U-A40Y?

Key specifications for 41GK-Y00U-A40Y: Bulb Style: PLAIN BULB W/BENDABLE EXTENSION; Active Portion Length: 3.500 INCHES NOMINAL IN; Bulb Tip Length: 3.500 INCHES NOMINAL IN; Style Designator: BULB W/O SOCKET. 24 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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