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131557 — HEAT SINK,ELECTRICAL-ELECTRONIC

✓ Government record, cited
— · FAN MODULE
PRODUCT OVERVIEW

131557: HEAT SINK,ELECTRICAL-ELECTRONIC.

HEAT SINK,ELECTRICAL-ELECTRONIC. Key specifications include material: ALUMINUM ALLOY 2024, bore_shape: STRAIGHT, bore_diameter: 55.00 MILLIMETERS NOMINAL MM, overall_width: 1.080 INCHES NOMINAL IN, load_direction: RADIAL, overall_height: 0.380 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-144-8547, 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
131557
NSN: 3110-00-144-8547
NIINs: 001448547, 011884369
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 0SAT8 — KOMATSU AMERICA CORP. (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 2024
bore_shapeSTRAIGHT
bore_diameter55.00 MILLIMETERS NOMINAL MM
overall_width1.080 INCHES NOMINAL IN
load_directionRADIAL
overall_height0.380 INCHES NOMINAL IN
overall_length2.820 INCHES NOMINAL IN
surface_finishGROUND
style_designatorNON-LOADING GROOVE, NON-SEPARABLE
overall_outside_diameter100.00 MILLIMETERS NOMINAL MM
internal_fit-up_designationSTANDARD
standard_tolerance_designationABEC NO.1
NSN3110-00-144-8547
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 131557 MFR OEM HEAT SINK,ELECTRICAL-ELECTRONIC
KEY FEATURES
•
INTERNAL FIT-UP DESIGNATION: STANDARD
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: NON-LOADING GROOVE, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 100.00 MILLIMETERS NOMINAL MM
•
BORE SHAPE: STRAIGHT
•
LOAD DIRECTION: RADIAL
•
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
TECHNICAL CHARACTERISTICS
INTERNAL FIT-UP DESIGNATIONSTANDARD
SURFACE FINISHGROUND
STYLE DESIGNATORNON-LOADING GROOVE, NON-SEPARABLE
OVERALL WIDTH21.00 MILLIMETERS NOMINAL MM
OVERALL OUTSIDE DIAMETER100.00 MILLIMETERS NOMINAL MM
BORE SHAPESTRAIGHT
LOAD DIRECTIONRADIAL
STANDARD TOLERANCE DESIGNATIONABEC NO.1
BORE DIAMETER55.00 MILLIMETERS NOMINAL MM
MATERIALSTEEL OUTER RING
SUBSTITUTES & CROSS-REFERENCES 7
00213-0206Reference document
Same NSN cross-reference
Reference document — Secondary reference
700084Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
3211Reference document
Same NSN cross-reference
Reference document — Secondary reference
35262Reference document
Same NSN cross-reference
Reference document — Secondary reference
149026Reference document
Same NSN cross-reference
Reference document — Secondary reference
G22-6211Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 131557?
131557 is a HEAT SINK,ELECTRICAL-ELECTRONIC.
What parts can replace 131557?
There are 7 known substitutes for 131557: 00213-0206, 700084, 3211 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 131557?
131557 is cataloged in the U.S. Government catalog under NSN 3110-00-144-8547. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.