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1385873 — HEAT SINK,ELECTRICAL-ELECTRONIC

✓ Government record, cited
— · FAN MODULE
PRODUCT OVERVIEW

1385873: HEAT SINK,ELECTRICAL-ELECTRONIC.

HEAT SINK,ELECTRICAL-ELECTRONIC. Key specifications include hole_diameter: 1.275 INCHES MINIMUM AND 1.325 INCHES MAXIMUM IN, overall_width: 5.586 INCHES NOMINAL IN, overall_length: 5.878 INCHES NOMINAL IN, hardness_rating: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM, outside_diameter: 1.921 INCHES MINIMUM AND 1.975 INCHES MAXIMUM IN, style_designator: FLAT INTERNAL TEETH. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-655-6927, 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
1385873
NSN: 5310-00-655-6927
NIINs: 006556927, 013218992, 017214041
FSC: 5310 — Nuts and Washers
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
hole_diameter1.275 INCHES MINIMUM AND 1.325 INCHES MAXIMUM IN
overall_width5.586 INCHES NOMINAL IN
overall_length5.878 INCHES NOMINAL IN
hardness_rating40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
outside_diameter1.921 INCHES MINIMUM AND 1.975 INCHES MAXIMUM IN
style_designatorFLAT INTERNAL TEETH
surface_treatmentCADMIUM OVERALL
material_thickness0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
end_item_identification5840-00-220-5690 RADAR SET
material_document_and_classification66 FED STD ALL MATERIAL RESPONSES OVERALL
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-655-6927
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 1385873 MFR OEM HEAT SINK,ELECTRICAL-ELECTRONIC
KEY FEATURES
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: FLAT INTERNAL TEETH
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
OUTSIDE DIAMETER: 1.921 INCHES MINIMUM AND 1.975 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
MATERIAL: STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORFLAT INTERNAL TEETH
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
OUTSIDE DIAMETER1.921 INCHES MINIMUM AND 1.975 INCHES MAXIMUM IN
MATERIAL THICKNESS0.059 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
MATERIALSTEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1059 OR STEEL COMP 1060 OR STEEL COMP 1561 OR STEEL COMP 1064 OVERALL
HOLE DIAMETER1.275 INCHES MINIMUM AND 1.325 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 3
53106556927Reference document
Same NSN cross-reference
Reference document — Secondary reference
MS35333-51Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
MS35333-34Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 1385873?
1385873 is a HEAT SINK,ELECTRICAL-ELECTRONIC.
What parts can replace 1385873?
There are 3 known substitutes for 1385873: 53106556927, MS35333-51, MS35333-34. Substitute compatibility should be verified for your specific system.
What is the NSN for 1385873?
1385873 is cataloged in the U.S. Government catalog under NSN 5310-00-655-6927. 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.