PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

K25150Thermometer,indicating,capillary

Tempco Inc Dba Marshalltown Tempco · NSN 6685-00-936-6040 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-936-6040 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-936-6040. Primary manufacturer part number: K25150.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • Dial Diameter: 2.500 INCHES NOMINAL IN
  • Scale Inscription/background Color: BLACK MARKING ON WHITE BACKGROUND
  • Scale Smallest Increment: 2.0 DEG FAHRENHEIT
  • Case Type: DUSTPROOF
  • Scale Type: CONCENTRIC DIAL
  • Style Designator: BULB W/O SOCKET
  • Material: COPPER ALLOY BULB
Applications
  • Applications requiring Copper Alloy Bulb construction
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-936-6040, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Tempco Inc Dba Marshalltown Tempco. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, 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
NSN6685-00-936-6040
Primary Part NumberK25150
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerTempco Inc Dba Marshalltown Tempco
StatusCANCELLED
Dial Diameter2.500 INCHES NOMINAL IN
Scale Inscription/background ColorBLACK MARKING ON WHITE BACKGROUND
Scale Smallest Increment2.0 DEG FAHRENHEIT
Case TypeDUSTPROOF
Scale TypeCONCENTRIC DIAL
Style DesignatorBULB W/O SOCKET
MaterialCOPPER ALLOY BULB
Active Portion Length2.812 INCHES NOMINAL IN
Bulb Connection TypeUNION
Bulb Quantity1
Indicator Connection MethodFLEXIBLE TUBE
Pointer/pen Type and Quantity1 INDICATING SINGLE
Actuating MediumVAPOR TENSION
Bulb TypePLAIN RIGID
Scale Measurement Range+30.000 TO 220.000 DEG FAHRENHEIT
Flexible Tube Length72.000 INCHES NOMINAL IN
Active Portion Diameter0.438 INCHES NOMINAL IN
Bulb StylePLAIN BULB W/BENDABLE EXTENSION
MaterialSTEEL METER CASE
Bulb Tip Length2.812 INCHES NOMINAL IN
Case Diameter2.781 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-023-1734K25240-003 FAHRENHEIT INTERCHANGEABLE
Thermometer,indicating,capillary
Tempco Inc Dba Marshalltown Tempco
5930-00-134-871320200-1 INTERCHANGEABLE
Switch,thermostatic
Kidde Technologies, Inc Dba Fenwal Safety Systems Div Fenwall Safety Systems
5945-00-185-4610 INTERCHANGEABLE
Relay,electromagnetic
5935-00-492-1954SM-B-679513 INTERCHANGEABLE
Adapter,connector
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
3110-00-554-3406 INTERCHANGEABLE
Bearing,ball,annular
6685-00-812-7832 INTERCHANGEABLE
Thermometer,indicating,capillary
6685-00-835-274457DFM0L417 INTERCHANGEABLE
Thermometer,indicating,capillary
Bellofram Corporation
5999-00-897-5193 INTERCHANGEABLE
Contact,electrical
5910-00-933-4887 INTERCHANGEABLE
Capacitor,variable,air Dielectri
2920-00-949-4027 INTERCHANGEABLE
Armature,generator
Cross-Reference Index
Part NumberManufacturer
67A77C194 Engineered Air Systems, Inc. Dba Drs Sustainment Systems (USA)
202001 Desco Corp Marsh Bellofram Div (USA)
K2555 Tempco Inc Dba Marshalltown Tempco (USA)
67A77C194 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
K25150 PRIMARY Tempco Inc Dba Marshalltown Tempco (USA)
329-014 Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc (USA)
57DFM Desco Corp Marsh Bellofram Div (USA)
Related Parts
6685-00-023-1734INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
K25240-003 FAHRENHEIT
5930-00-134-8713INTERCHANGEABLE
SWITCH,THERMOSTATIC
20200-1
5945-00-185-4610INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5935-00-492-1954INTERCHANGEABLE
ADAPTER,CONNECTOR
SM-B-679513
3110-00-554-3406INTERCHANGEABLE
BEARING,BALL,ANNULAR
6685-00-812-7832INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
6685-00-835-2744INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
57DFM0L417
5999-00-897-5193INTERCHANGEABLE
CONTACT,ELECTRICAL
5910-00-933-4887INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
2920-00-949-4027INTERCHANGEABLE
ARMATURE,GENERATOR
6685-01-071-7520INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
5985-01-094-2959INTERCHANGEABLE
ANTENNA ASSEMBLY

Frequently Asked Questions

What is NSN 6685-00-936-6040?

NSN 6685-00-936-6040 is a Thermometer,indicating,capillary, manufactured by Tempco Inc Dba Marshalltown Tempco, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-936-6040?

NSN 6685-00-936-6040 has 7 cross-referenced part numbers: 67A77C194 (Engineered Air Systems, Inc. Dba Drs Sustainment Systems), 202001 (Desco Corp Marsh Bellofram Div), K2555 (Tempco Inc Dba Marshalltown Tempco), 67A77C194 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), K25150 (Tempco Inc Dba Marshalltown Tempco) and 2 more.

What NSN replaces 6685-00-936-6040?

There are 12 known substitutes for 6685-00-936-6040: 6685-00-023-1734, 5930-00-134-8713, 5945-00-185-4610 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of K25150?

Key specifications for K25150: Dial Diameter: 2.500 INCHES NOMINAL IN; Scale Inscription/background Color: BLACK MARKING ON WHITE BACKGROUND; Scale Smallest Increment: 2.0 DEG FAHRENHEIT; Case Type: DUSTPROOF. 21 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-936-6040 still in active supply?

NSN 6685-00-936-6040 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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