PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G71691Thermometer,indicating,capillary

Tempco Inc Dba Marshalltown Tempco · NSN 6685-01-068-1600 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-01-068-1600 — this item is cataloged by the U.S. Government under National Stock Number 6685-01-068-1600. Primary manufacturer part number: G71691.
Features
  • Thermometer,indicating,capillary — FSC 6685
  • Scale Type: CIRCULAR
  • Case Diameter: 3.125 INCHES NOMINAL IN
  • Pointer/pen Type and Quantity: 1 INDICATING SINGLE
  • Scale Measurement Range: +0.000 TO 160.000 DEG FAHRENHEIT
  • Flexible Tube Length: 60.000 INCHES NOMINAL IN
  • Indicator Connection Method: FLEXIBLE TUBE
  • Active Portion Diameter: 0.438 INCHES NOMINAL IN
Applications
  • Applications requiring Brass Meter Case construction
General Description

The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-01-068-1600, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 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
NSN6685-01-068-1600
Primary Part NumberG71691
Item NameThermometer,indicating,capillary
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerTempco Inc Dba Marshalltown Tempco
StatusACTIVE
Scale TypeCIRCULAR
Case Diameter3.125 INCHES NOMINAL IN
Pointer/pen Type and Quantity1 INDICATING SINGLE
Scale Measurement Range+0.000 TO 160.000 DEG FAHRENHEIT
Flexible Tube Length60.000 INCHES NOMINAL IN
Indicator Connection MethodFLEXIBLE TUBE
Active Portion Diameter0.438 INCHES NOMINAL IN
Bulb TypeFLEXIBLE CAPILLARY
Bulb Connection TypeINTEGRAL FLANGE
Bulb StylePLAIN BULB W/BENDABLE EXTENSION
Bulb Quantity1
Active Portion Length7.000 INCHES NOMINAL IN
Actuating MediumVAPOR TENSION
MaterialBRASS METER CASE
MaterialCOPPER BULB
Style DesignatorBULB W/O SOCKET
Bulb Tip Length7.000 INCHES NOMINAL IN
Dial Diameter2.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4320-00-035-7552V5 INTERCHANGEABLE
Housing
Circor Naval Solutions Llc Dba Warren Pumps
6685-00-097-3159Q15GE19A INTERCHANGEABLE
Thermometer,indicating,capillary
Thermo King Corporation Dba Phoenix Global Distirbution.
5120-00-277-8311 INTERCHANGEABLE
Wrench,open End
4320-00-343-6404 INTERCHANGEABLE
Piston,pump
3020-00-436-1437556-32 INTERCHANGEABLE
Gear,spur
Southern Gear & Machine Inc
4310-00-572-4896 INTERCHANGEABLE
Piston
5950-00-578-55928896600 INTERCHANGEABLE
Transformer,power Autotransforme
Us Army Aviation and Missile Command
3040-00-600-2736SM-B-197182 INTERCHANGEABLE
Collar,shaft
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5910-00-681-6874SCB98372 INTERCHANGEABLE
Retainer,capacitor
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6685-00-953-1762 INTERCHANGEABLE
Thermometer,indicating,capillary
Cross-Reference Index
Part NumberManufacturer
1355AS395-1 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
55632 Drs Environmental Systems Inc (USA)
V5 Liftec Inc Div Liftec, Inc. (USA)
25-6440TW-X2X W/1009KB CASE Ashcroft Inc Dba Heise (USA)
55632 Hdt Expeditionary Systems Inc (USA)
55632 Keco Industries, Inc. (USA)
G71691 PRIMARY Tempco Inc Dba Marshalltown Tempco (USA)
883-55632 Wheeler Fleet Solutions, Co. (USA)
G71691 M & M Control Service Inc (USA)
Related Parts
4320-00-035-7552INTERCHANGEABLE
HOUSING
V5
6685-00-097-3159INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
Q15GE19A
5120-00-277-8311INTERCHANGEABLE
WRENCH,OPEN END
4320-00-343-6404INTERCHANGEABLE
PISTON,PUMP
3020-00-436-1437INTERCHANGEABLE
GEAR,SPUR
556-32
4310-00-572-4896INTERCHANGEABLE
PISTON
5950-00-578-5592INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
8896600
3040-00-600-2736INTERCHANGEABLE
COLLAR,SHAFT
SM-B-197182
5910-00-681-6874INTERCHANGEABLE
RETAINER,CAPACITOR
SCB98372
6685-00-953-1762INTERCHANGEABLE
THERMOMETER,INDICATING,CAPILLARY
5961-01-103-5498INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
05-10021-0A
5310-01-200-0283INTERCHANGEABLE
NUT,SPECIAL

Frequently Asked Questions

What is NSN 6685-01-068-1600?

NSN 6685-01-068-1600 is a Thermometer,indicating,capillary, manufactured by Tempco Inc Dba Marshalltown Tempco, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-01-068-1600?

NSN 6685-01-068-1600 has 9 cross-referenced part numbers: 1355AS395-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 55632 (Drs Environmental Systems Inc), V5 (Liftec Inc Div Liftec, Inc.), 25-6440TW-X2X W/1009KB CASE (Ashcroft Inc Dba Heise), 55632 (Hdt Expeditionary Systems Inc) and 4 more.

What NSN replaces 6685-01-068-1600?

There are 12 known substitutes for 6685-01-068-1600: 4320-00-035-7552, 6685-00-097-3159, 5120-00-277-8311 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of G71691?

Key specifications for G71691: Scale Type: CIRCULAR; Case Diameter: 3.125 INCHES NOMINAL IN; Pointer/pen Type and Quantity: 1 INDICATING SINGLE; Scale Measurement Range: +0.000 TO 160.000 DEG FAHRENHEIT. 18 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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