PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

41GN-P00R-R65YThermometer,indicating,capillary

Ashcroft Inc Dba Heise · NSN 6685-00-491-8217 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-491-8217 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-491-8217. Primary manufacturer part number: 41GN-P00R-R65Y.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • Case Type: SHOCK PROOFSHOCK PROOF
  • Bulb Tip Length: 9.000 INCHES NOMINAL9.000 INCHES NOMINAL IN
  • Case Diameter: 5.875 INCHES NOMINAL IN
  • Scale Smallest Increment: 5.0 DEG FAHRENHEIT5.0 DEG FAHRENHEIT
  • Active Portion Diameter: 0.975 INCHES NOMINAL IN
  • Flexible Tube Length: 780.000 INCHES NOMINAL IN
  • Bulb Quantity: 11
Applications
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-491-8217, 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 4 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
NSN6685-00-491-8217
Primary Part Number41GN-P00R-R65Y
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAshcroft Inc Dba Heise
StatusACTIVE
Case TypeSHOCK PROOFSHOCK PROOF
Bulb Tip Length9.000 INCHES NOMINAL9.000 INCHES NOMINAL IN
Case Diameter5.875 INCHES NOMINAL IN
Scale Smallest Increment5.0 DEG FAHRENHEIT5.0 DEG FAHRENHEIT
Active Portion Diameter0.975 INCHES NOMINAL IN
Flexible Tube Length780.000 INCHES NOMINAL IN
Bulb Quantity11
Bulb TypePLAIN RIGID
Bulb StylePLAIN BULB W/BENDABLE EXTENSION
Indicator Connection MethodFLEXIBLE TUBE
Features ProvidedZERO ADJUSTMENTZERO ADJUSTMENT
Scale Measurement Range+200.000 TO 950.000 DEG FAHRENHEIT
Bulb Connection TypeINTEGRAL FLANGE
Actuating MediumGASGAS
Active Portion Length9.000 INCHES NOMINAL9.000 INCHES NOMINAL IN
Pointer/pen Type and Quantity1 INDICATING SINGLE AND 1 REFERENCE SINGLE
MaterialSTEEL CORROSION RESISTING OVERALL
Style DesignatorBULB W/O SOCKET
Nondefinitive Spec/std DataA CLASS
Scale Inscription/background ColorBLACK MARKINGS ON YELLOW BACKGROUNDBLACK MARKINGS ON YELLOW BACKGROUND
Scale TypeCONCENTRIC
Dial Diameter4.500 INCHES NOMINAL4.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
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
6685-00-428-878981GK-Y00R-W25Y INTERCHANGEABLE
Thermometer,indicating,capillary
Weksler Glass Thermometer Corp
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
6685-00-491-8220 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
45-T8478K-41E-010-0650-200-1000F Ashcroft Inc Dba Heise (USA)
41GN-P00R-R65Y PRIMARY Ashcroft Inc Dba Heise (USA)
M27-400 Weksler Glass Thermometer Corp (USA)
IFR-45-21-A-065-010-B 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
Related Parts
6685-00-007-9593INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GNN00RW75Y
6685-00-147-5841INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GN-N00U-W40Y
6685-00-428-8789INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
81GK-Y00R-W25Y
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
6685-00-491-8220INTERCHANGEABLE
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 6685-00-491-8217?

NSN 6685-00-491-8217 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 6685-00-491-8217?

NSN 6685-00-491-8217 has 5 cross-referenced part numbers: 45-T8478K-41E-010-0650-200-1000F (Ashcroft Inc Dba Heise), 41GN-P00R-R65Y (Ashcroft Inc Dba Heise), M27-400 (Weksler Glass Thermometer Corp), IFR-45-21-A-065-010-B (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).

What NSN replaces 6685-00-491-8217?

There are 12 known substitutes for 6685-00-491-8217: 6685-00-007-9593, 6685-00-147-5841, 6685-00-428-8789 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 41GN-P00R-R65Y?

Key specifications for 41GN-P00R-R65Y: Case Type: SHOCK PROOFSHOCK PROOF; Bulb Tip Length: 9.000 INCHES NOMINAL9.000 INCHES NOMINAL IN; Case Diameter: 5.875 INCHES NOMINAL IN; Scale Smallest Increment: 5.0 DEG FAHRENHEIT5.0 DEG FAHRENHEIT. 22 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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