PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-347Bearing,sleeve

Dresser Industries Inc Leroi Div · NSN 3120-00-354-6398 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-354-6398 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-354-6398. Primary manufacturer part number: 21-347.
Features
  • Bearing,sleeve — FSC 3120
  • Body Inside Diameter: 3.0015 INCHES MINIMUM AND 3.0025 INCHES MAXIMUM IN
  • Corner Shape: SQUARE ALL CORNERS
  • Material: LEAD ALLOY INNER LAYER
  • Surface Groove Location and Quantity: 1 INTERNAL
  • Antirotation/lubrication Type and Quantity: 2 HOLE
  • Style Designator: SEGMENTED, PLAIN, NO OUTSIDE FLANGES
  • Lubricant Accommodation Style: GROOVED CIRCULAR
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Lead Alloy Inner Layer construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-354-6398, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 11 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-354-6398
Primary Part Number21-347
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerDresser Industries Inc Leroi Div
StatusACTIVE
Body Inside Diameter3.0015 INCHES MINIMUM AND 3.0025 INCHES MAXIMUM IN
Corner ShapeSQUARE ALL CORNERS
MaterialLEAD ALLOY INNER LAYER
Surface Groove Location and Quantity1 INTERNAL
Antirotation/lubrication Type and Quantity2 HOLE
Style DesignatorSEGMENTED, PLAIN, NO OUTSIDE FLANGES
Lubricant Accommodation StyleGROOVED CIRCULAR
MaterialSTEEL OUTER LAYER
Material Document and ClassificationSAE 15 ASSN STD SINGLE MATERIAL RESPONSE INNER LAYER
Body Outside Diameter3.1720 INCHES MINIMUM AND 3.1730 INCHES MAXIMUM IN
Hole Diameter0.3125 INCHES NOMINAL FIRST IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
3455-00-232-421920085 INTERCHANGEABLE
Reamer,machine
Brown & Sharpe, Inc. Div Precision Measuring Instruments, Tesa Usa
5945-01-027-117021347 INTERCHANGEABLE
Relay,electromagnetic
Noske-Kaeser Germany Gmbh
1730-01-146-069321347 INTERCHANGEABLE
Lever,controller
Time Manufacturing Company Dba Time Manufacturing Company
4810-01-400-207921347-850-1 INTERCHANGEABLE
Sleeve and Slide,directional Con
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
3040-01-406-879821347-1001-1 INTERCHANGEABLE
Shaft,shouldered
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
4810-01-412-960521347-001 INTERCHANGEABLE
Valve,linear,directional Control
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
8030-01-671-154621347 INTERCHANGEABLE
Primer,sealing Compound
Loctite Corp
Cross-Reference Index
Part NumberManufacturer
21-347 PRIMARY Dresser Industries Inc Leroi Div (USA)
Related Parts
3455-00-232-4219INTERCHANGEABLE
REAMER,MACHINE
20085
5945-01-027-1170INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
21347
1730-01-146-0693INTERCHANGEABLE
LEVER,CONTROLLER
21347
4810-01-400-2079INTERCHANGEABLE
SLEEVE AND SLIDE,DIRECTIONAL CON
21347-850-1
3040-01-406-8798INTERCHANGEABLE
SHAFT,SHOULDERED
21347-1001-1
4810-01-412-9605INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
21347-001
8030-01-671-1546INTERCHANGEABLE
PRIMER,SEALING COMPOUND
21347

Frequently Asked Questions

What is NSN 3120-00-354-6398?

NSN 3120-00-354-6398 is a Bearing,sleeve, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-354-6398?

NSN 3120-00-354-6398 has 1 cross-referenced part number: 21-347 (Dresser Industries Inc Leroi Div).

What NSN replaces 3120-00-354-6398?

There are 7 known substitutes for 3120-00-354-6398: 3455-00-232-4219, 5945-01-027-1170, 1730-01-146-0693 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-347?

Key specifications for 21-347: Body Inside Diameter: 3.0015 INCHES MINIMUM AND 3.0025 INCHES MAXIMUM IN; Corner Shape: SQUARE ALL CORNERS; Material: LEAD ALLOY INNER LAYER; Surface Groove Location and Quantity: 1 INTERNAL. 12 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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