PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31101-7551-19Pyrometer,indicating

Thermo Electric Company Inc. Dba Thermo Electric Company · NSN 6685-00-057-8432 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-057-8432 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-057-8432. Primary manufacturer part number: 31101-7551-19.
Features
  • Pyrometer,indicating — FSC 6685
  • Scale Measurement Range: -200.000 TO 500.000 DEG FAHRENHEIT
  • Entry Date: 70-10-15
  • Material: ALUMINUM METER CASE
  • Features Provided: DRY CELL BATTERY
  • Scale Calibration: CALIBRATED TO COPPER CONSTANTAN THERMOCOUPLE
  • Case Type: CARRYING CASE W/HANDLE AND DUSTPROOF
  • Pointer/pen Type and Quantity: 1 INDICATING SINGLE
Applications
  • Applications requiring Aluminum Meter Case construction
General Description

The Pyrometer,indicating, cataloged under National Stock Number 6685-00-057-8432, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Thermo Electric Company Inc. Dba Thermo Electric Company. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 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: Active.

Technical Specifications
ParameterValue
NSN6685-00-057-8432
Primary Part Number31101-7551-19
Item NamePyrometer,indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerThermo Electric Company Inc. Dba Thermo Electric Company
StatusACTIVE
Scale Measurement Range-200.000 TO 500.000 DEG FAHRENHEIT
Entry Date70-10-15
MaterialALUMINUM METER CASE
Features ProvidedDRY CELL BATTERY
Scale CalibrationCALIBRATED TO COPPER CONSTANTAN THERMOCOUPLE
Case TypeCARRYING CASE W/HANDLE AND DUSTPROOF
Pointer/pen Type and Quantity1 INDICATING SINGLE
Scale Accuracy Rating1/4 OF 1 PCT SCALE RANGE ACCURACY RATING
Reference Data and LiteratureTHERMOELECTRIC COMMERCIAL HANDBOOK
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SCALE TYPE,SCALE RANGE,SCALE ACCURACY,SCALE CALIBRATION,SCALE SMALLEST INCREMENT,SCALE LENGTH,INDICATING POINT TYPE,CASE TYPE,CASE MATERIAL,OVERALL WIDTH,OVERALL HEIGHT
Functional ClassificationAA-9.1
Functional DescriptionUSED FOR DIRECT TEMP MEASUREMENTS AND CALIBRATION OF POTENTIOMETER AND MILLIVOLTMETER TYPE INSTRUMENTS
Scale Length23.600 INCHES NOMINAL IN
Measurement TypeMILLIVOLT CIRCUIT
Scale Smallest Increment2.0 DEG FAHRENHEIT AND 0.05 MILLIVOLTS
Scale TypeDRUM
Relationship to Similar EquipmentSIMILAR TO NSN 6685-00-825-4360,6685-00-784-0522,AND 6695-00-833-8451
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3040-00-050-873713211E3110-1 INTERCHANGEABLE
Shaft,straight
Cecom Lr Center
5910-00-107-66503110-1 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Hickok Waekon Llc
5136-00-239-2762 INTERCHANGEABLE
Die,thread Cutting
2530-00-272-752055-107 INTERCHANGEABLE
Weight,wheel Balancing
Myers Tire Supply Distribution Inc Div Akron Branch
4910-00-399-6069 INTERCHANGEABLE
Balancer,vehicle Wheel
9320-00-580-5414 INTERCHANGEABLE
Rubber Sheet,solid
6105-00-635-586180200 INTERCHANGEABLE
Motor,direct Current
Reliance Electric Company Dba Reliance & Dodge Brands
4240-00-871-6267201 INTERCHANGEABLE
Guard,foot,industrial
Ellwood Safety Appliance Co., Inc.
6665-00-940-9620 INTERCHANGEABLE
Radiac Set
3920-00-975-02098020000 INTERCHANGEABLE
Truck,hand
Labconco Corp
Cross-Reference Index
Part NumberManufacturer
31101-7551-19 Thermo Electric Company Inc. Dba Thermo Electric Company (USA)
80200 Thermo Electric Company Inc. Dba Thermo Electric Company (USA)
31101 Thermo Electric Company Inc. Dba Thermo Electric Company (USA)
Related Parts
3040-00-050-8737INTERCHANGEABLE
SHAFT,STRAIGHT
13211E3110-1
5910-00-107-6650INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
3110-1
5136-00-239-2762INTERCHANGEABLE
DIE,THREAD CUTTING
2530-00-272-7520INTERCHANGEABLE
WEIGHT,WHEEL BALANCING
55-107
4910-00-399-6069INTERCHANGEABLE
BALANCER,VEHICLE WHEEL
9320-00-580-5414INTERCHANGEABLE
RUBBER SHEET,SOLID
6105-00-635-5861INTERCHANGEABLE
MOTOR,DIRECT CURRENT
80200
4240-00-871-6267INTERCHANGEABLE
GUARD,FOOT,INDUSTRIAL
201
6665-00-940-9620INTERCHANGEABLE
RADIAC SET
3920-00-975-0209INTERCHANGEABLE
TRUCK,HAND
8020000
5331-00-984-3756INTERCHANGEABLE
O-RING
2-212 N0674-70
5305-01-045-9551INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
31101

Frequently Asked Questions

What is NSN 6685-00-057-8432?

NSN 6685-00-057-8432 is a Pyrometer,indicating, manufactured by Thermo Electric Company Inc. Dba Thermo Electric Company, classified under FSC 6685 (No Item Name Available). Status: active.

What are the part numbers for NSN 6685-00-057-8432?

NSN 6685-00-057-8432 has 3 cross-referenced part numbers: 31101-7551-19 (Thermo Electric Company Inc. Dba Thermo Electric Company), 80200 (Thermo Electric Company Inc. Dba Thermo Electric Company), 31101 (Thermo Electric Company Inc. Dba Thermo Electric Company).

What NSN replaces 6685-00-057-8432?

There are 12 known substitutes for 6685-00-057-8432: 3040-00-050-8737, 5910-00-107-6650, 5136-00-239-2762 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31101-7551-19?

Key specifications for 31101-7551-19: Overall Length: 6.250 INCHES NOMINAL IN; Scale Measurement Range: -200.000 TO 500.000 DEG FAHRENHEIT; Entry Date: 70-10-15; Material: ALUMINUM METER CASE. 20 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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