PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6N4540Thermostat,flow Control

Caterpillar Inc Div Caterpillar Defense · NSN 6685-00-425-5141 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-425-5141 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-425-5141. Primary manufacturer part number: 6N4540.
Features
  • Thermostat,flow Control — FSC 6685
  • 13 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermostat,flow Control, cataloged under National Stock Number 6685-00-425-5141, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. This item has 13 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameThermostat,flow Control
FSC / FSG6685 — No Item Name Available (FSG 66)
ManufacturersGeneral Motors Corp (CAGE 24617); Scovill Inc (CAGE 53705); Eaton Corp Controls Div (CAGE 18163); Standard-Thomson Corporation (CAGE 78493); General Motors Corp Harrison Radiator Div (CAGE 27462)
Technical Specifications
ParameterValue
NSN6685-00-425-5141
Primary Part Number6N4540
Item NameThermostat,flow Control
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-144-9004060-11 INTERCHANGEABLE
Bearing,ball,annular
Lockheed Martin Corporation Div Rms - Mitchel Field
5310-00-208-1919 INTERCHANGEABLE
Nut,self-Locking,hexagon
3110-00-275-02391828S71 INTERCHANGEABLE
Bearing,ball,thrust
Meritor Heavy Vehicle Systems, Llc
5305-00-276-84571273 INTERCHANGEABLE
Screw,cap,hexagon Head
Eaton Aerospace, Llc Dba Jackson South
3120-00-513-48011273 INTERCHANGEABLE
Bearing,plain,rod End
Goodrich Corporation
5905-00-777-8326 INTERCHANGEABLE
Resistor,fixed,wire Wound
5975-01-065-2264BUC-75 INTERCHANGEABLE
Bushing,electrical Conduit
Egs Electrical Group Appleton Div
5940-01-097-02641273 INTERCHANGEABLE
Terminal Strip,grounding
Crown Audio, Inc. Dba Crown International
4140-01-236-29301273 INTERCHANGEABLE
Impeller,fan,axial
Grindmaster Corp
5998-01-454-16221273 INTERCHANGEABLE
Circuit Card Assembly
Astronics Test Systems Inc
Cross-Reference Index
Part NumberManufacturer
1273 General Motors Corp (USA)
D10102 Scovill Inc (USA)
PLA Eaton Corp Controls Div (USA)
4 Standard-Thomson Corporation (USA)
1273 General Motors Corp Harrison Radiator Div (USA)
DE64577 Agco Corp Parts Opn (USA)
1877-2169 Harsco Corp Bmy-Combat Systems Div (USA)
VD10102 Scovill Inc (USA)
6N4540 Compagnia Generale Trattori -S.p.a. Abbreviata C.g.t.-S.p.a. (ITA)
01877-2169 Harsco Corp Bmy-Combat Systems Div (USA)
4L3849 Caterpillar Inc Div Caterpillar Defense (USA)
15 Microdot Mfg Inc Prestole Everlock Div (USA)
6N4540 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
3110-00-144-9004INTERCHANGEABLE
BEARING,BALL,ANNULAR
060-11
5310-00-208-1919INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
3110-00-275-0239INTERCHANGEABLE
BEARING,BALL,THRUST
1828S71
5305-00-276-8457INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
1273
3120-00-513-4801INTERCHANGEABLE
BEARING,PLAIN,ROD END
1273
5905-00-777-8326INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
5975-01-065-2264INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
BUC-75
5940-01-097-0264INTERCHANGEABLE
TERMINAL STRIP,GROUNDING
1273
4140-01-236-2930INTERCHANGEABLE
IMPELLER,FAN,AXIAL
1273
5998-01-454-1622INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
1273
5310-01-559-6978INTERCHANGEABLE
WASHER,FLAT
1273
5325-01-571-5895INTERCHANGEABLE
PARTS KIT,FASTENER
D-1010-2

Frequently Asked Questions

What is NSN 6685-00-425-5141?

NSN 6685-00-425-5141 is a Thermostat,flow Control, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-425-5141?

NSN 6685-00-425-5141 has 13 cross-referenced part numbers: 1273 (General Motors Corp), D10102 (Scovill Inc), PLA (Eaton Corp Controls Div), 4 (Standard-Thomson Corporation), 1273 (General Motors Corp Harrison Radiator Div) and 8 more.

What NSN replaces 6685-00-425-5141?

There are 12 known substitutes for 6685-00-425-5141: 3110-00-144-9004, 5310-00-208-1919, 3110-00-275-0239 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 6685-00-425-5141 still in active supply?

NSN 6685-00-425-5141 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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