PartsTable
Technical Data Sheet
PartsTable / STORAGE_HDD / 907851
907851 ✓ Verified by PartsTable
— · STORAGE_HDD · 3.5_SATA_HDD
WHAT YOU NEED TO KNOW
SAS backplane supports SATA, not vice versa NL-SAS = SAS protocol at nearline (7.2K) speed — NOT SATA
Gen8 LFF tray ≠ Gen10 tray — different screw holes
PRODUCT OVERVIEW

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, bore_shape: STRAIGHT, bore_diameter: 45.00 MILLIMETERS NOMINAL MM, overall_width: 1.1875 INCHES NOMINAL IN, load_direction: ANGULAR, surface_finish: GROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-678-7971, 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
STORAGE_HDD→ 3.5_SATA_HDD→ 907851
NSN: 3110-00-678-7971
FSC: 3110
CAGE: 73342 — ALLISON TRANSMISSION INC DBA ALLISON TRANSMISSION, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
bore_shapeSTRAIGHT
bore_diameter45.00 MILLIMETERS NOMINAL MM
overall_width1.1875 INCHES NOMINAL IN
load_directionANGULAR
surface_finishGROUND
style_designatorLOADING GROOVE, NON-SEPARABLE
internal_clearance0.0007 INCHES MINIMUM RADIAL AND 0.0010 INCHES MAXIMUM RADIAL IN
overall_outside_diameter85.00 MILLIMETERS NOMINAL MM
nondefinitive_spec/std_data145 TYPE AND 00 GRADE
retainer_fabrication_methodPRESSED
standard_tolerance_designationABEC NO.1
NSN3110-00-678-7971
COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K 907851 OEM NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | — | NL-SAS 7.2K NL-SAS uses SAS protocol at 7.2K RPM | SAS backplane supports SATA, not reverse Tray generation matters | Gen8 LFF tray differs from Gen10 TITLE LFF 3.5" DRIVE PN 907851 MFR OEM
KEY FEATURES
•
RETAINER FABRICATION METHOD: PRESSED
•
OVERALL OUTSIDE DIAMETER: 85.00 MILLIMETERS NOMINAL MM
•
BORE DIAMETER: 45.00 MILLIMETERS NOMINAL MM
•
INTERNAL CLEARANCE: 0.0007 INCHES MINIMUM RADIAL AND 0.0010 INCHES MAXIMUM RADIAL IN
•
INTERNAL FIT-UP CONTACT ANGULAR DIRECTION: INWARD CONVERGENT
•
LOAD DIRECTION: ANGULAR
•
NONDEFINITIVE SPEC/STD DATA: 145 TYPE AND 00 GRADE
TECHNICAL CHARACTERISTICS (FLIS)
RETAINER FABRICATION METHODPRESSED
OVERALL WIDTH1.1875 INCHES NOMINAL IN
OVERALL OUTSIDE DIAMETER85.00 MILLIMETERS NOMINAL MM
BORE DIAMETER45.00 MILLIMETERS NOMINAL MM
INTERNAL CLEARANCE0.0007 INCHES MINIMUM RADIAL AND 0.0010 INCHES MAXIMUM RADIAL IN
INTERNAL FIT-UP CONTACT ANGULAR DIRECTIONINWARD CONVERGENT
LOAD DIRECTIONANGULAR
NONDEFINITIVE SPEC/STD DATA145 TYPE AND 00 GRADE
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
181-61Interchangeable
interchangeable cross-reference
interchangeable
43209Interchangeable
interchangeable cross-reference
interchangeable
3209Interchangeable
interchangeable cross-reference
interchangeable
2501137Interchangeable
interchangeable cross-reference
interchangeable
128-104-092Interchangeable
interchangeable cross-reference
interchangeable
N0S30Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 907851?
907851 is a BEARING,BALL,ANNULAR. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What parts can replace 907851?
There are 22 known substitutes for 907851: 181-61, 43209, 3209 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 907851?
907851 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-678-7971. 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