PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

206-010-421-5Bearing,sleeve

Rbc Transport Dynamics Corp Div Rbc Transport Dynamics · NSN 3120-00-135-0556 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-135-0556 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-135-0556. Primary manufacturer part number: 206-010-421-5.
Features
  • Bearing,sleeve — FSC 3120
  • Material Document and Classification: AMS4120 ASSN STD 1ST MATERIAL RESPONSE AND AMS4121 ASSN STD 2ND MATERIAL RESPONSE AND AMS4122 ASSN STD 3RD MATERIAL RESPONSE OUTER LAYER
  • Surface Finish: 63.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE
  • Surface Finish: 63.0 MICROINCHES RIGHT END SURFACE OF BODY
  • Corner Shape: SQUARE OUTSIDE RIGHT CORNER
  • Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
  • Corner Shape: SQUARE INSIDE RIGHT CORNER
  • Corner Shape: SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Plastic Polytetrafluoroethylene Left End Surface of Flange construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-135-0556, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Rbc Transport Dynamics Corp Div Rbc Transport Dynamics. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-135-0556
Primary Part Number206-010-421-5
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerRbc Transport Dynamics Corp Div Rbc Transport Dynamics
StatusACTIVE
Material Document and ClassificationAMS4120 ASSN STD 1ST MATERIAL RESPONSE AND AMS4121 ASSN STD 2ND MATERIAL RESPONSE AND AMS4122 ASSN STD 3RD MATERIAL RESPONSE OUTER LAYER
Surface Finish63.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE
Surface Finish63.0 MICROINCHES RIGHT END SURFACE OF BODY
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Surface Finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
Corner ShapeSQUARE INSIDE RIGHT CORNER
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Surface Treatment Document and ClassificationMIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Surface Finish63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
MaterialPLASTIC POLYTETRAFLUOROETHYLENE LEFT END SURFACE OF FLANGE
Corner ShapeCHAMFERED INSIDE LEFT CORNER
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Surface Finish63.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE
MaterialPLASTIC POLYTETRAFLUOROETHYLENE INNER LAYER
MaterialALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 7075 OUTER LAYER
Corner ShapeUNDERCUT LEFT FLANGE BODY CORNER
Surface TreatmentANODIZE OVERALL
Body Outside Diameter0.9385 INCHES MINIMUM AND 0.9390 INCHES MAXIMUM IN
Body Inside Diameter0.7495 INCHES MINIMUM AND 0.7505 INCHES MAXIMUM IN
Flange Outside Diameter1.0900 INCHES MINIMUM AND 1.1200 INCHES MAXIMUM IN
Flange Width0.0900 INCHES MINIMUM AND 0.0930 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3020-01-531-1063127625 INTERCHANGEABLE
Rod,pinion
Avon Gear & Engineering Co.
Cross-Reference Index
Part NumberManufacturer
206-010-421-5 PRIMARY Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA)
NHLF-12-216 New Hampshire Ball Bearings Inc Div Astro Division (USA)
AJF12A103 Minebea Mitsumi Inc. (JPN)
90887-5 Rbc Transport Dynamics Corp Div Rbc Transport Dynamics (USA)
206-010-421-5 Bell Textron Inc (USA)
1-2762-5 Roller Bearing Company of America, Inc. (USA)
Related Parts
3020-01-531-1063INTERCHANGEABLE
ROD,PINION
127625

Frequently Asked Questions

What is NSN 3120-00-135-0556?

NSN 3120-00-135-0556 is a Bearing,sleeve, manufactured by Rbc Transport Dynamics Corp Div Rbc Transport Dynamics, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-135-0556?

NSN 3120-00-135-0556 has 6 cross-referenced part numbers: 206-010-421-5 (Rbc Transport Dynamics Corp Div Rbc Transport Dynamics), NHLF-12-216 (New Hampshire Ball Bearings Inc Div Astro Division), AJF12A103 (Minebea Mitsumi Inc.), 90887-5 (Rbc Transport Dynamics Corp Div Rbc Transport Dynamics), 206-010-421-5 (Bell Textron Inc) and 1 more.

What NSN replaces 3120-00-135-0556?

There is 1 known substitute for 3120-00-135-0556: 3020-01-531-1063. Verify interchangeability with system specifications before substitution.

What are the specifications of 206-010-421-5?

Key specifications for 206-010-421-5: Material Document and Classification: AMS4120 ASSN STD 1ST MATERIAL RESPONSE AND AMS4121 ASSN STD 2ND MATERIAL RESPONSE AND AMS4122 ASSN STD 3RD MATERIAL RESPONSE OUTER LAYER; Surface Finish: 63.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE; Surface Finish: 63.0 MICROINCHES RIGHT END SURFACE OF BODY; Corner Shape: SQUARE OUTSIDE RIGHT CORNER. 23 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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