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AH40674 — BEARING,ROLLER,NEEDLE

✓ Government record, cited
— · TAPERED BEARING
PRODUCT OVERVIEW

AH40674: BEARING,ROLLER,NEEDLE.

The BEARING,ROLLER,NEEDLE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_diameter: 0.7493 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN, alignment_type: RIGID, surface_finish: GROUND, inner_ring_width: 0.9950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN, outer_ring_width: 0.8100 INCHES MINIMUM AND 0.8150 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 3110-00-442-9129, 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
AH40674
NSN: 3110-00-442-9129
FSC: 3110 — Bearings, Antifriction, Unmounted
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_diameter0.7493 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
alignment_typeRIGID
surface_finishGROUND
inner_ring_width0.9950 INCHES MINIMUM AND 1.0000 INCHES MAXIMUM IN
outer_ring_width0.8100 INCHES MINIMUM AND 0.8150 INCHES MAXIMUM IN
style_designatorAIRFRAME, HARDENED AND GROUND, NON-SEPARABLE
surface_treatmentCHROMIUM OUTER RING OUTSIDE DIAMETER
lubrication_materialLUBRICANT
overall_outside_diameter1.8490 INCHES MINIMUM AND 1.8500 INCHES MAXIMUM IN
retainer_fabrication_methodPRESSED
surface_treatment_document_and_classificationQQ-C-320,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING OUTSIDE DIAMETER
NSN3110-00-442-9129
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: AH40674 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
RETAINER FABRICATION METHOD: PRESSED
•
LUBRICATION MATERIAL: LUBRICANT
•
OUTER RING WIDTH: 0.8100 INCHES MINIMUM AND 0.8150 INCHES MAXIMUM IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-C-320,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING OUTSIDE DIAMETER
•
SURFACE FINISH: GROUND
•
STYLE DESIGNATOR: AIRFRAME, HARDENED AND GROUND, NON-SEPARABLE
•
OVERALL OUTSIDE DIAMETER: 1.8490 INCHES MINIMUM AND 1.8500 INCHES MAXIMUM IN
•
ALIGNMENT TYPE: RIGID
TECHNICAL CHARACTERISTICS
RETAINER FABRICATION METHODPRESSED
LUBRICATION MATERIALLUBRICANT
OUTER RING WIDTH0.8100 INCHES MINIMUM AND 0.8150 INCHES MAXIMUM IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-C-320,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING OUTSIDE DIAMETER
SURFACE FINISHGROUND
STYLE DESIGNATORAIRFRAME, HARDENED AND GROUND, NON-SEPARABLE
OVERALL OUTSIDE DIAMETER1.8490 INCHES MINIMUM AND 1.8500 INCHES MAXIMUM IN
ALIGNMENT TYPERIGID
SURFACE TREATMENTCHROMIUM OUTER RING OUTSIDE DIAMETER
BORE DIAMETER0.7493 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN
OTHER ITEMS IN FSC 3110 — Bearings, Antifriction, Unmounted
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
3110-00-001-1937 3110-00-001-1938 3110-00-001-4661 3110-00-001-4662 3110-00-001-4689 3110-00-001-4722
SUBSTITUTES & CROSS-REFERENCES 2
YR-1 7/8-C-15Reference document
Same NSN cross-reference
Reference document — Secondary reference
C5A27514Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is AH40674?
AH40674 is a BEARING,ROLLER,NEEDLE.
What parts can replace AH40674?
There are 2 known substitutes for AH40674: YR-1 7/8-C-15, C5A27514. Substitute compatibility should be verified for your specific system.
What is the NSN for AH40674?
AH40674 is cataloged in the U.S. Government catalog under NSN 3110-00-442-9129. This indicates validated use in U.S. government and defense supply chains.
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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.