PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

C15947Bearing,sleeve

Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division · NSN 3120-00-555-8023 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-555-8023 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-555-8023. Primary manufacturer part number: C15947.
Features
  • Bearing,sleeve — FSC 3120
  • Surface Groove Location and Quantity: 1 INTERNAL
  • Surface Finish: 63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
  • Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
  • Material Document and Classification: MIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Finish: 125.0 MICROINCHES LEFT END SURFACE OF BODY
  • Body Outside Diameter: 12.6220 INCHES MINIMUM AND 12.6250 INCHES MAXIMUM IN
  • Corner Shape: SQUARE ALL CORNERS
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Grease Lubrication construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-555-8023, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division. Government technical data includes 15 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-555-8023
Primary Part NumberC15947
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerControl Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division
StatusACTIVE
Surface Groove Location and Quantity1 INTERNAL
Surface Finish63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
Surface Finish125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
Material Document and ClassificationMIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface Finish125.0 MICROINCHES LEFT END SURFACE OF BODY
Body Outside Diameter12.6220 INCHES MINIMUM AND 12.6250 INCHES MAXIMUM IN
Corner ShapeSQUARE ALL CORNERS
Style DesignatorSEGMENTED, PLAIN, NO OUTSIDE FLANGES
Surface Finish125.0 MICROINCHES RIGHT END SURFACE OF BODY
Lubricant Accommodation StyleGROOVED CLOSED BOTH ENDS
MaterialGREASE LUBRICATION
MaterialCOPPER ALLOY 934 OVERALL
Antirotation/lubrication Type and Quantity6 HOLE
Hole Diameter0.2500 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM FIRST IN
Body Inside Diameter11.6250 INCHES MINIMUM AND 11.6270 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5133-01-399-1203 INTERCHANGEABLE
Drill,twist
Cross-Reference Index
Part NumberManufacturer
C15947 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
C15947 Control Flow, Inc. Dba Control Flow Inc (USA)
Related Parts
5133-01-399-1203INTERCHANGEABLE
DRILL,TWIST

Frequently Asked Questions

What is NSN 3120-00-555-8023?

NSN 3120-00-555-8023 is a Bearing,sleeve, manufactured by Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-555-8023?

NSN 3120-00-555-8023 has 2 cross-referenced part numbers: C15947 (Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division), C15947 (Control Flow, Inc. Dba Control Flow Inc).

What NSN replaces 3120-00-555-8023?

There is 1 known substitute for 3120-00-555-8023: 5133-01-399-1203. Verify interchangeability with system specifications before substitution.

What are the specifications of C15947?

Key specifications for C15947: Surface Groove Location and Quantity: 1 INTERNAL; Surface Finish: 63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Material Document and Classification: MIL-B-16261,GR 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 16 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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