PartsTable
Technical Data Sheet
B253 ✓ Verified by PartsTable
· FAN MODULE
WHAT YOU NEED TO KNOW
Hot-plug fans can be replaced without shutdown Dual-rotor = higher CFM for high-power configs (GPU, dense storage)
AIRFLOW DIRECTION IS CRITICAL — reversed fan = thermal shutdown
PRODUCT OVERVIEW

HEAT SINK,ELECTRICAL-ELECTRONIC. Key specifications include body_width: 1.196 INCHES NOMINAL IN, body_height: 1.500 INCHES NOMINAL IN, body_length: 1.196 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED, mounting_method: THREADED STUD(S) SINGLE GROUP, nominal_thread_size: 0.112 INCHES SINGLE GROUP IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6610-00-495-4918, 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
B253
NSN: 6610-00-495-4918
FSC: 6610
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
body_width1.196 INCHES NOMINAL IN
body_height1.500 INCHES NOMINAL IN
body_length1.196 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
mounting_methodTHREADED STUD(S) SINGLE GROUP
nominal_thread_size0.112 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
thread_quantity_per_inch40 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_shielding_methodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
mounting_facility_quantity2 SINGLE GROUP
terminal_type_and_quantity10 WIRE LEAD
NSN6610-00-495-4918
COMPONENT DIAGRAM
HANDLE 60mm 60mm HOT-PLUG COOL IN HOT OUT DUAL ROTOR HOT-SWAP FAN MODULE | 60mm Dual Rotor | FRONT-TO-BACK Hot-plug | Redundant | TITLE FAN MODULE PN B253 MFR OEM HEAT SINK,ELECTRICAL-ELECTRONIC
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
2448354-1Interchangeable
interchangeable cross-reference
interchangeable
B253Interchangeable
interchangeable cross-reference
interchangeable
02331-1660Interchangeable
interchangeable cross-reference
interchangeable
200251Interchangeable
interchangeable cross-reference
interchangeable
02331-1660-01Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B253?
B253 is a HEAT SINK,ELECTRICAL-ELECTRONIC.
What parts can replace B253?
There are 5 known substitutes for B253: 2448354-1, B253, 02331-1660 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B253?
B253 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6610-00-495-4918. This indicates validated use in U.S. government and defense supply chains.
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