PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31276Bearing,sleeve

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 3120-00-474-3204 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-474-3204 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-474-3204. Primary manufacturer part number: 31276.
Features
  • Bearing,sleeve — FSC 3120
  • Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
  • Surface Finish: 63.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE
  • Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
  • Corner Shape: SQUARE LEFT FLANGE BODY CORNER
  • Slot Length: 0.0520 INCHES MINIMUM AND 0.0720 INCHES MAXIMUM FIRST IN
  • Corner Shape: SQUARE OUTSIDE LEFT CORNER
  • Antirotation/lubrication Type and Quantity: 2 HOLE AND 1 SLOT
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-474-3204, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-474-3204
Primary Part Number31276
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
Surface Finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
Surface Finish63.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE
Surface Finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
Corner ShapeSQUARE LEFT FLANGE BODY CORNER
Slot Length0.0520 INCHES MINIMUM AND 0.0720 INCHES MAXIMUM FIRST IN
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Antirotation/lubrication Type and Quantity2 HOLE AND 1 SLOT
Lubricant Accommodation StyleGROOVED CIRCULAR
Flange Outside Diameter1.3650 INCHES MINIMUM AND 1.3850 INCHES MAXIMUM IN
Material Document and ClassificationAMS 4846 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
MaterialCOPPER ALLOY OVERALL
Flange Width0.0610 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
Hole Diameter0.1780 INCHES MINIMUM AND 0.1980 INCHES MAXIMUM FIRST IN
Body Inside Diameter0.8640 INCHES MINIMUM AND 0.8660 INCHES MAXIMUM IN
Slot Width0.1150 INCHES MINIMUM AND 0.1350 INCHES MAXIMUM FIRST IN
Surface Groove Location and Quantity1 INTERNAL
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Corner ShapeCHAMFERED INSIDE LEFT CORNER
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Body Outside Diameter1.0640 INCHES MINIMUM AND 1.0650 INCHES MAXIMUM IN
Corner ShapeSQUARE INSIDE RIGHT CORNER
Surface Finish63.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE
MaterialOIL LUBRICATING LUBRICATION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5640-00-097-88794-673645-1 INTERCHANGEABLE
Insulation Blanket,thermal
Thermal Structures, Inc
3110-00-227-3993HD547T INTERCHANGEABLE
Ring,bearing,outer
Textron Systems Corporation Dba Textron Systems Corp
3455-00-516-504219839 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
6610-00-932-246131276 INTERCHANGEABLE
Housing,indicator
Aerosonic Llc
5310-01-150-104431276 INTERCHANGEABLE
Nut,stamped
Barnes Group Inc. Dba Barnes Distribution
2920-01-211-458231-276 INTERCHANGEABLE
Cover,dust,distributor
Prestolite Electric Inc
3230-01-221-141930511 INTERCHANGEABLE
Bit,router
Black and Decker Us Inc
3040-01-436-090031276 INTERCHANGEABLE
Brake,multiple Disk
Ausco Products Inc
6515-01-446-9711312.76 INTERCHANGEABLE
Chuck,drill
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
31276 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
31276 Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp. (CAN)
Related Parts
5640-00-097-8879INTERCHANGEABLE
INSULATION BLANKET,THERMAL
4-673645-1
3110-00-227-3993INTERCHANGEABLE
RING,BEARING,OUTER
HD547T
3455-00-516-5042INTERCHANGEABLE
REAMER,MACHINE
19839
6610-00-932-2461INTERCHANGEABLE
HOUSING,INDICATOR
31276
5310-01-150-1044INTERCHANGEABLE
NUT,STAMPED
31276
2920-01-211-4582INTERCHANGEABLE
COVER,DUST,DISTRIBUTOR
31-276
3230-01-221-1419INTERCHANGEABLE
BIT,ROUTER
30511
3040-01-436-0900INTERCHANGEABLE
BRAKE,MULTIPLE DISK
31276
6515-01-446-9711INTERCHANGEABLE
CHUCK,DRILL
312.76

Frequently Asked Questions

What is NSN 3120-00-474-3204?

NSN 3120-00-474-3204 is a Bearing,sleeve, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-474-3204?

NSN 3120-00-474-3204 has 2 cross-referenced part numbers: 31276 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 31276 (Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.).

What NSN replaces 3120-00-474-3204?

There are 9 known substitutes for 3120-00-474-3204: 5640-00-097-8879, 3110-00-227-3993, 3455-00-516-5042 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 31276?

Key specifications for 31276: Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Surface Finish: 63.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE; Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE; Corner Shape: SQUARE LEFT FLANGE BODY CORNER. 25 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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