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Technical Data Sheet
PartsTable / COMPONENT / 91679
91679 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The FAN,CENTRIFUGAL is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include end_item_identification: MRAP - COMMON NSN - USED ON 2 MRAP VARIANTS AND 3 OTHER WEAPON SYSTEMS.. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-010-0165, 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
91679
NSN: 5305-00-010-0165
FSC: 5305
CAGE: 89109 — GRAHAM PAIGE CORP (USA)
SPECIFICATIONS
end_item_identificationMRAP - COMMON NSN - USED ON 2 MRAP VARIANTS AND 3 OTHER WEAPON SYSTEMS.
NSN5305-00-010-0165
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 91679 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD LENGTH: 1.250 INCHES MINIMUM IN
•
HEAD HEIGHT: 0.312 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE GR 1 OR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 10P STYLE
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL OVERALL
•
HEAD STYLE: HEXAGON
•
FASTENER LENGTH: 3.500 INCHES NOMINAL IN
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS (FLIS)
THREAD LENGTH1.250 INCHES MINIMUM IN
HEAD HEIGHT0.312 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE GR 1 OR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 10P STYLE
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL OVERALL
HEAD STYLEHEXAGON
FASTENER LENGTH3.500 INCHES NOMINAL IN
WIDTH BETWEEN FLATS0.750 INCHES NOMINAL IN
THREAD CLASS2A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
666243-070Interchangeable
interchangeable cross-reference
interchangeable
666243-069Interchangeable
interchangeable cross-reference
interchangeable
6970Interchangeable
interchangeable cross-reference
interchangeable
100165Interchangeable
interchangeable cross-reference
interchangeable
CBM23131Interchangeable
interchangeable cross-reference
interchangeable
CBM10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 91679?
91679 is a FAN,CENTRIFUGAL.
What parts can replace 91679?
There are 22 known substitutes for 91679: 666243-070, 666243-069, 6970 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 91679?
91679 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-010-0165. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026