PartsTable
Technical Data Sheet
12-FF ✓ Verified by PartsTable
· TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,BALL,ANNULAR is a the manufacturer industrial component. Key specifications include material: STEEL OR STEEL STAINLESS - USE STB000 OVERALL, connection_type: THREADED EXTERNAL PIPE INLET, style_designator: CENTER WRENCHING FACILITY, nominal_thread_size: 0.50 INCHES ALL ENDS IN, nominal_overall_length: 1.89 INCHES IN, thread_series_designator: NPTF ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-966-2331, 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
12-FF
NSN: 3110-00-966-2331
FSC: 3110
CAGE: 38443 — SKF USA INC. (USA)
SPECIFICATIONS
materialSTEEL OR STEEL STAINLESS - USE STB000 OVERALL
connection_typeTHREADED EXTERNAL PIPE INLET
special_featuresMATERIAL: STEEL, STAINLESS STEEL AND BRASS, STANDARD DYNAMIC PRESSURE (X 1,000 PSI) STEEL: 6.0, STAINLESS STEEL: 7.2, BRASS: 3.9, CENTER HEX: 7/8".
style_designatorCENTER WRENCHING FACILITY
nominal_thread_size0.50 INCHES ALL ENDS IN
nominal_overall_length1.89 INCHES IN
thread_series_designatorNPTF ALL ENDS
part_name_assigned_by_controlling_agencyPIPE, NIPPLE
NSN3110-00-966-2331
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: 12-FF · 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
STANDARD TOLERANCE DESIGNATION: ABEC NO.1
LOAD DIRECTION: RADIAL
BORE SHAPE: STRAIGHT
SURFACE FINISH: GROUND
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATION: MIL-G-7421 MIL SPEC SINGLE MATERIAL RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH0.4325 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
RETAINER FABRICATION METHODPRESSED
STANDARD TOLERANCE DESIGNATIONABEC NO.1
LOAD DIRECTIONRADIAL
BORE SHAPESTRAIGHT
SURFACE FINISHGROUND
LUBRICATION MATERIAL DOCUMENT AND CLASSIFICATIONMIL-G-7421 MIL SPEC SINGLE MATERIAL RESPONSE
SPECIAL FEATURESOPERATING TEMPERATURE FROM MINUS 100 DEG F TO PLUS 175 DEG F DEGF
INTERNAL FIT-UP DESIGNATIONSTANDARD
SHIELD QUANTITY2
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
55128Interchangeable
interchangeable cross-reference
interchangeable
827Interchangeable
interchangeable cross-reference
interchangeable
724BK03MInterchangeable
interchangeable cross-reference
interchangeable
MILI6447TYPEM1AInterchangeable
interchangeable cross-reference
interchangeable
S8RPPTFMILL3545Interchangeable
interchangeable cross-reference
interchangeable
S8KDDMILL3545Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12-FF?
12-FF is a BEARING,BALL,ANNULAR.
What parts can replace 12-FF?
There are 22 known substitutes for 12-FF: 55128, 827, 724BK03M and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 12-FF?
12-FF is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-966-2331. This indicates validated use in U.S. government and defense supply chains.
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