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246-5749946 — GUARD,FAN IMPELLER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

246-5749946: GUARD,FAN IMPELLER.

The GUARD,FAN IMPELLER is a the manufacturer thermal management component critical for maintaining optimal operating temperatures in enterprise hardware. Key specifications include shape: ROUND, material: IRON ALLOY 660 OVERALL, head_style: HEXAGON, grip_length: 2.875 INCHES NOMINAL IN, head_height: 0.469 INCHES NOMINAL IN, thread_class: 3A A. This part is cataloged in the U.S.

Government catalog under NSN 5306-01-464-0107, 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
246-5749946
NSN: 5306-01-464-0107
NIINs: 014640107, 014691579
FSC: 5306 — Bolts
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
shapeROUND
materialIRON ALLOY 660 OVERALL
head_styleHEXAGON
grip_length2.875 INCHES NOMINAL IN
head_height0.469 INCHES NOMINAL IN
thread_class3A A
grip_diameter0.8710 INCHES MINIMUM AND 0.8740 INCHES MAXIMUM IN
head_diameter1.230 INCHES NOMINAL IN
thread_length1.356 INCHES NOMINAL IN
fastener_length4.231 INCHES NOMINAL IN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
NSN5306-01-464-0107
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 246-5749946 · 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
•
HEAD HEIGHT: 0.469 INCHES NOMINAL IN
•
FASTENER LENGTH: 4.231 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 1.356 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.875 INCHES IN
•
HEAD STYLE: HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
TYPICAL APPLICATIONS
  • Server thermal management and cooling
  • Hot-swap fan replacement in production environments
  • Redundant cooling for high-availability systems
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.469 INCHES NOMINAL IN
FASTENER LENGTH4.231 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH1.356 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.875 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
GRIP LENGTH2.875 INCHES NOMINAL IN
WIDTH BETWEEN FLATS1.239 INCHES MINIMUM AND 1.252 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
5749946 FIND NO 50Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 246-5749946?
246-5749946 is a GUARD,FAN IMPELLER.
What parts can replace 246-5749946?
There is 1 known substitute for 246-5749946: 5749946 FIND NO 50. Substitute compatibility should be verified for your specific system.
What is the NSN for 246-5749946?
246-5749946 is cataloged in the U.S. Government catalog under NSN 5306-01-464-0107. 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.