PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

145976Thermostat,flow Control

Cummins Inc. · NSN 6685-00-531-4033 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-531-4033 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-531-4033. Primary manufacturer part number: 145976.
Features
  • Thermostat,flow Control — FSC 6685
  • Mounting Method: FLANGE
  • Largest Outside Diameter: 2.870 INCHES MINIMUM AND 2.878 INCHES MAXIMUM IN
  • FSC Application Data: THERMOSTAT HOUSING AND WATER CONNECTION GROUP,DIESEL ENGINE
  • Flow Control Device: CHOKE
  • Thermostat Type: SOLID EXPANSION
  • Valve Travel Distance: 0.310 INCHES NOMINAL IN
  • Spring Operated Pressure Relief: NOT PROVIDED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Thermostat,flow Control, cataloged under National Stock Number 6685-00-531-4033, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Cummins Inc.. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6685-00-531-4033
Primary Part Number145976
Item NameThermostat,flow Control
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerCummins Inc.
StatusCANCELLED
Mounting MethodFLANGE
Largest Outside Diameter2.870 INCHES MINIMUM AND 2.878 INCHES MAXIMUM IN
FSC Application DataTHERMOSTAT HOUSING AND WATER CONNECTION GROUP,DIESEL ENGINE
Flow Control DeviceCHOKE
Thermostat TypeSOLID EXPANSION
Valve Travel Distance0.310 INCHES NOMINAL IN
Spring Operated Pressure ReliefNOT PROVIDED
Operating Temp Rating175.0 FAHRENHEIT NOMINAL DEGF
Usage DesignDESIGNED TO CONTROL ENGINE COOLING TEMP
Opening Temp Rating160.0 FAHRENHEIT NOMINAL AND 175.0 FAHRENHEIT NOMINAL DEGF
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4030-00-125-95510131756-9 INTERCHANGEABLE
Wedge,wire Rope Socket
New Holland Construction
5305-00-567-5320330-1748-190 INTERCHANGEABLE
Screw,machine
Allmetal Screw Products Corp
5360-00-597-4110210195 INTERCHANGEABLE
Spring,helical,torsion
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
6680-00-618-15776560-00047 INTERCHANGEABLE
Gage,liquid Quantity,float Type
Rochester Sensors, Llc
5305-01-140-78301459-76 INTERCHANGEABLE
Screw,cap,hexagon Head
Brad Foote Gear Works Inc
6515-01-574-0890317.56 INTERCHANGEABLE
Drill,twist,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
2540-01-612-418931756 INTERCHANGEABLE
Cushion,seat,vehicular
Turnbull Llc
Cross-Reference Index
Part NumberManufacturer
354-160 Standard-Thomson Corporation (USA)
VD10165 Scovill Fasteners Inc (USA)
145976 PRIMARY Cummins Inc. (USA)
31756 Ideal Instruments Inc (USA)
Related Parts
4030-00-125-9551INTERCHANGEABLE
WEDGE,WIRE ROPE SOCKET
0131756-9
5305-00-567-5320INTERCHANGEABLE
SCREW,MACHINE
330-1748-190
5360-00-597-4110INTERCHANGEABLE
SPRING,HELICAL,TORSION
210195
6680-00-618-1577INTERCHANGEABLE
GAGE,LIQUID QUANTITY,FLOAT TYPE
6560-00047
5305-01-140-7830INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
1459-76
6515-01-574-0890INTERCHANGEABLE
DRILL,TWIST,BONE
317.56
2540-01-612-4189INTERCHANGEABLE
CUSHION,SEAT,VEHICULAR
31756

Frequently Asked Questions

What is NSN 6685-00-531-4033?

NSN 6685-00-531-4033 is a Thermostat,flow Control, manufactured by Cummins Inc., classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-531-4033?

NSN 6685-00-531-4033 has 4 cross-referenced part numbers: 354-160 (Standard-Thomson Corporation), VD10165 (Scovill Fasteners Inc), 145976 (Cummins Inc.), 31756 (Ideal Instruments Inc).

What NSN replaces 6685-00-531-4033?

There are 7 known substitutes for 6685-00-531-4033: 4030-00-125-9551, 5305-00-567-5320, 5360-00-597-4110 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 145976?

Key specifications for 145976: Mounting Method: FLANGE; Largest Outside Diameter: 2.870 INCHES MINIMUM AND 2.878 INCHES MAXIMUM IN; FSC Application Data: THERMOSTAT HOUSING AND WATER CONNECTION GROUP,DIESEL ENGINE; Flow Control Device: CHOKE. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6685-00-531-4033 still in active supply?

NSN 6685-00-531-4033 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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