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337645 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The 337645 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6685-00-372-4669, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
337645
NSN: 6685-00-372-4669
FSC: 6685
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
Part Number337645
NSN6685-00-372-4669
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 337645 TITLE COMPONENT PN 337645 MFR 337645
KEY FEATURES
•
OPENING TEMP RATING: 177.0 FAHRENHEIT MINIMUM AND 183.0 FAHRENHEIT MAXIMUM DEGF
•
OPERATING TEMP RATING: 180.0 FAHRENHEIT NOMINAL DEGF
•
VALVE TRAVEL DISTANCE: 0.350 INCHES NOMINAL IN
•
SPRING OPERATED PRESSURE RELIEF: NOT PROVIDED
•
THERMOSTAT TYPE: WAX PELLET
•
LARGEST OUTSIDE DIAMETER: 2.120 INCHES MINIMUM AND 2.130 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OPENING TEMP RATING177.0 FAHRENHEIT MINIMUM AND 183.0 FAHRENHEIT MAXIMUM DEGF
OPERATING TEMP RATING180.0 FAHRENHEIT NOMINAL DEGF
VALVE TRAVEL DISTANCE0.350 INCHES NOMINAL IN
SPRING OPERATED PRESSURE RELIEFNOT PROVIDED
THERMOSTAT TYPEWAX PELLET
LARGEST OUTSIDE DIAMETER2.120 INCHES MINIMUM AND 2.130 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
74R151Interchangeable
interchangeable cross-reference
interchangeable
75097HInterchangeable
interchangeable cross-reference
interchangeable
1572374Interchangeable
interchangeable cross-reference
interchangeable
RSHX48Interchangeable
interchangeable cross-reference
interchangeable
997097-R91 ITEM 21Interchangeable
interchangeable cross-reference
interchangeable
5940PL1452107Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 337645?
337645 is a 337645.
What parts can replace 337645?
There are 19 known substitutes for 337645: 74R151, 75097H, 1572374 and 16 more. Substitute compatibility should be verified for your specific system.
Is 337645 still available?
337645 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026