PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20514Bearing,sleeve

Real-Time Laboratories, Llc · NSN 3120-01-185-1687 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-185-1687 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-185-1687. Primary manufacturer part number: 20514.
Features
  • Bearing,sleeve — FSC 3120
  • Surface Groove Location and Quantity: 1 EXTERNAL AND 1 INTERNAL
  • Style Designator: SOLID, EXTERNAL FLANGE ONE END
  • Corner Shape: CHAMFERED OUTSIDE RIGHT CORNER
  • Flange Width: 0.1230 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
  • Body Inside Diameter: 0.5000 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN
  • Body Outside Diameter: 0.9870 INCHES MINIMUM AND 0.9890 INCHES MAXIMUM IN
  • Lubricant Accommodation Style: GROOVED CIRCULAR
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 3120-01-185-1687, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Real-Time Laboratories, Llc. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN3120-01-185-1687
Primary Part Number20514
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerReal-Time Laboratories, Llc
StatusACTIVE
Surface Groove Location and Quantity1 EXTERNAL AND 1 INTERNAL
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Corner ShapeCHAMFERED OUTSIDE RIGHT CORNER
Flange Width0.1230 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN
Body Inside Diameter0.5000 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN
Body Outside Diameter0.9870 INCHES MINIMUM AND 0.9890 INCHES MAXIMUM IN
Lubricant Accommodation StyleGROOVED CIRCULAR
Flange Outside Diameter1.0560 INCHES MINIMUM AND 1.0600 INCHES MAXIMUM IN
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
MaterialCOPPER ALLOY OVERALL
Corner ShapeSQUARE INSIDE RIGHT CORNER
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Corner ShapeSQUARE LEFT FLANGE BODY CORNER
Corner ShapeRELIEF GROOVE INSIDE LEFT CORNER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
6130-00-256-3168 INTERCHANGEABLE
Rectifier,metallic
5340-00-395-9433 INTERCHANGEABLE
Clamp,loop
6665-00-413-53042051-4 INTERCHANGEABLE
Outside Link
Ieh Corporation
3830-00-453-9101 INTERCHANGEABLE
Brush,segment
5360-00-730-592220514 INTERCHANGEABLE
Spring,helical,compression
Eagle Crusher Co Inc Dba Stedman Machine Co
2915-00-774-868220514 INTERCHANGEABLE
Valve
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
4730-01-014-12824CMT4, 1/4 TUBEX1/4 NPT INTERCHANGEABLE
Adapter,straight,pipe to Tube
Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
5305-01-273-943220514 INTERCHANGEABLE
Screw,cap,socket Head
Sps Technologies, Llc Dba PB Fasteners
6350-01-696-782920514 INTERCHANGEABLE
Sensing Element,fire Detector Sy
Aqualarm Inc
Cross-Reference Index
Part NumberManufacturer
20514 PRIMARY Real-Time Laboratories, Llc (USA)
Related Parts
6130-00-256-3168INTERCHANGEABLE
RECTIFIER,METALLIC
5340-00-395-9433INTERCHANGEABLE
CLAMP,LOOP
6665-00-413-5304INTERCHANGEABLE
OUTSIDE LINK
2051-4
3830-00-453-9101INTERCHANGEABLE
BRUSH,SEGMENT
5360-00-730-5922INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
20514
2915-00-774-8682INTERCHANGEABLE
VALVE
20514
4730-01-014-1282INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4CMT4, 1/4 TUBEX1/4 NPT
5305-01-273-9432INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
20514
6350-01-696-7829INTERCHANGEABLE
SENSING ELEMENT,FIRE DETECTOR SY
20514

Frequently Asked Questions

What is NSN 3120-01-185-1687?

NSN 3120-01-185-1687 is a Bearing,sleeve, manufactured by Real-Time Laboratories, Llc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-185-1687?

NSN 3120-01-185-1687 has 1 cross-referenced part number: 20514 (Real-Time Laboratories, Llc).

What NSN replaces 3120-01-185-1687?

There are 9 known substitutes for 3120-01-185-1687: 6130-00-256-3168, 5340-00-395-9433, 6665-00-413-5304 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20514?

Key specifications for 20514: Surface Groove Location and Quantity: 1 EXTERNAL AND 1 INTERNAL; Style Designator: SOLID, EXTERNAL FLANGE ONE END; Corner Shape: CHAMFERED OUTSIDE RIGHT CORNER; Flange Width: 0.1230 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN. 15 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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