PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4000Pyrometer,indicating

Alnor Instrument Company · NSN 6685-00-526-5519 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-526-5519 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-526-5519. Primary manufacturer part number: 4000.
Features
  • Pyrometer,indicating — FSC 6685
  • Scale Smallest Increment: 20.0 DEG FAHRENHEIT
  • Material: ALUMINUM METER CASE
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE RANGE,SCALE SMALLEST INCREMENT,ACCESSORY COMPONENTS AND QUANTITY
  • Case Type: DUSTPROOF AND MOISTURE PROOF
  • Scale Length: 3.500 INCHES NOMINAL IN
  • Measurement Type: MILLIVOLT CIRCUIT
  • 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 6685-00-526-5519, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Alnor Instrument Company. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN6685-00-526-5519
Primary Part Number4000
Item NamePyrometer,indicating
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerAlnor Instrument Company
StatusCANCELLED
Scale Smallest Increment20.0 DEG FAHRENHEIT
MaterialALUMINUM METER CASE
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY SCALE RANGE,SCALE SMALLEST INCREMENT,ACCESSORY COMPONENTS AND QUANTITY
Case TypeDUSTPROOF AND MOISTURE PROOF
Scale Length3.500 INCHES NOMINAL IN
Measurement TypeMILLIVOLT CIRCUIT
Pointer/pen Type and Quantity1 INDICATING SINGLE
Scale CalibrationCALIBRATED TO IRON CONSTANTAN THERMOCOUPLE
Scale TypeECCENTRIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
6685-00-080-0186607-200-059 INTERCHANGEABLE
Pyrometer,indicating
Alnor Instrument Company
6685-00-222-2932 INTERCHANGEABLE
Pyrometer,indicating
8135-00-239-52883/4 S INTERCHANGEABLE
Seal,strapping
Jfk Supplies Inc
1730-00-294-3397100628A INTERCHANGEABLE
Trailer,rail Type
Air Logistics Corporation Dba Air Logistics Corp
5325-00-371-8108BS 78505 INTERCHANGEABLE
Clinch Plate,turnbutton Fastener
Morito Scovill Americas, Llc Dba Scovill Manufacturing
6685-00-389-7423 INTERCHANGEABLE
Pyrometer,indicating
1730-00-789-12494938001 INTERCHANGEABLE
Trailer,rail Type
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
2520-00-846-23754401010001 INTERCHANGEABLE
Kit,u Joint
Wheeler Fleet Solutions, Co.
1730-00-921-65604000A INTERCHANGEABLE
Trailer,rail Type
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
6685-01-013-2057 INTERCHANGEABLE
Pyrometer,indicating
Cross-Reference Index
Part NumberManufacturer
4000 Alnor Instrument Company (USA)
4000A Alnor Instrument Company (USA)
34S Pyrometer Instrument Co Inc (USA)
4000A0-1200DEGF Alnor Instrument Company (USA)
Related Parts
6685-00-080-0186INTERCHANGEABLE
PYROMETER,INDICATING
607-200-059
6685-00-222-2932INTERCHANGEABLE
PYROMETER,INDICATING
8135-00-239-5288INTERCHANGEABLE
SEAL,STRAPPING
3/4 S
1730-00-294-3397INTERCHANGEABLE
TRAILER,RAIL TYPE
100628A
5325-00-371-8108INTERCHANGEABLE
CLINCH PLATE,TURNBUTTON FASTENER
BS 78505
6685-00-389-7423INTERCHANGEABLE
PYROMETER,INDICATING
1730-00-789-1249INTERCHANGEABLE
TRAILER,RAIL TYPE
4938001
2520-00-846-2375INTERCHANGEABLE
KIT,U JOINT
4401010001
1730-00-921-6560INTERCHANGEABLE
TRAILER,RAIL TYPE
4000A
6685-01-013-2057INTERCHANGEABLE
PYROMETER,INDICATING
6685-01-048-3418INTERCHANGEABLE
PYROMETER,INDICATING
6515-01-164-2820INTERCHANGEABLE
BLOCK,BITE

Frequently Asked Questions

What is NSN 6685-00-526-5519?

NSN 6685-00-526-5519 is a Pyrometer,indicating, manufactured by Alnor Instrument Company, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-526-5519?

NSN 6685-00-526-5519 has 4 cross-referenced part numbers: 4000 (Alnor Instrument Company), 4000A (Alnor Instrument Company), 34S (Pyrometer Instrument Co Inc), 4000A0-1200DEGF (Alnor Instrument Company).

What NSN replaces 6685-00-526-5519?

There are 12 known substitutes for 6685-00-526-5519: 6685-00-080-0186, 6685-00-222-2932, 8135-00-239-5288 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4000?

Key specifications for 4000: Scale Smallest Increment: 20.0 DEG FAHRENHEIT; Overall Depth: 2.000 INCHES NOMINAL IN; Material: ALUMINUM METER CASE; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SCALE RANGE,SCALE SMALLEST INCREMENT,ACCESSORY COMPONENTS AND QUANTITY. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-526-5519 still in active supply?

NSN 6685-00-526-5519 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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