PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

644Bath,constant Temperature

Petrolab, L.l.c. · NSN 6640-01-286-5265 · FSC 6640 · No Item Name Available
Verified by PartsTable
NSN 6640-01-286-5265 — this item is cataloged by the U.S. Government under National Stock Number 6640-01-286-5265. Primary manufacturer part number: 644.
Features
  • Bath,constant Temperature — FSC 6640
  • Test Tube Rack: NOT INCLUDED
  • Operating Temp Range: -60.0 TO 30.0 FAHRENHEIT DEGF
  • Thermoregulator: NOT INCLUDED
  • Cooling Coils for Below Room Temp Use: NOT INCLUDED
  • Agitator: NOT INCLUDED
  • 3 verified cross-references
  • Primary manufacturer: Petrolab, L.l.c.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Bath,constant Temperature, cataloged under National Stock Number 6640-01-286-5265, is classified within Federal Supply Class 6640 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Petrolab, L.l.c.. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6640-01-286-5265
Primary Part Number644
Item NameBath,constant Temperature
FSC / FSG6640 / 66 — No Item Name Available
ManufacturerPetrolab, L.l.c.
StatusACTIVE
Test Tube RackNOT INCLUDED
Operating Temp Range-60.0 TO 30.0 FAHRENHEIT DEGF
ThermoregulatorNOT INCLUDED
Cooling Coils for Below Room Temp UseNOT INCLUDED
AgitatorNOT INCLUDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6210-00-223-8222 INTERCHANGEABLE
Fixture,lighting
3460-00-494-1699K46-3 INTERCHANGEABLE
Wheel,abrasive
Sioux Tools Inc
2835-01-539-2431K463P02 INTERCHANGEABLE
Vane,compressor,nonaircraft Gas
General Electric Company
Cross-Reference Index
Part NumberManufacturer
644 PRIMARY Petrolab, L.l.c. (USA)
K463 PRIMARY Koehler Instrument Company, Inc. (USA)
6640-1115-0000 Defense Supply Center Richmond Industrial Plant Equipment /dla/ (USA)
Related Parts
6210-00-223-8222INTERCHANGEABLE
FIXTURE,LIGHTING
3460-00-494-1699INTERCHANGEABLE
WHEEL,ABRASIVE
K46-3
2835-01-539-2431INTERCHANGEABLE
VANE,COMPRESSOR,NONAIRCRAFT GAS
K463P02

Frequently Asked Questions

What is NSN 6640-01-286-5265?

NSN 6640-01-286-5265 is a Bath,constant Temperature, manufactured by Petrolab, L.l.c., classified under FSC 6640 (No Item Name Available). Status: active.

What are the part numbers for NSN 6640-01-286-5265?

NSN 6640-01-286-5265 has 3 cross-referenced part numbers: 644 (Petrolab, L.l.c.), K463 (Koehler Instrument Company, Inc.), 6640-1115-0000 (Defense Supply Center Richmond Industrial Plant Equipment /dla/).

What NSN replaces 6640-01-286-5265?

There are 3 known substitutes for 6640-01-286-5265: 6210-00-223-8222, 3460-00-494-1699, 2835-01-539-2431. Verify interchangeability with system specifications before substitution.

What are the specifications of 644?

Key specifications for 644: Test Tube Rack: NOT INCLUDED; Operating Temp Range: -60.0 TO 30.0 FAHRENHEIT DEGF; Thermoregulator: NOT INCLUDED; Cooling Coils for Below Room Temp Use: NOT INCLUDED. 5 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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