PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11639Bushing,sleeve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 3120-01-205-5721 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-205-5721 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-205-5721. Primary manufacturer part number: 11639.
Features
  • Bushing,sleeve — FSC 3120
  • 2 verified cross-references
  • Primary manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
Applications
  • Industrial machinery bearing replacement
  • Motor and pump shaft assemblies
  • HVAC blower and fan assemblies
General Description

The Bushing,sleeve, cataloged under National Stock Number 3120-01-205-5721, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBushing,sleeve
FSC / FSG3120 — No Item Name Available (FSG 31)
ManufacturersLeslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795)
Technical Specifications
ParameterValue
NSN3120-01-205-5721
Primary Part Number11639
Item NameBushing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
9540-00-145-573160-8684 INTERCHANGEABLE
Angle,structural
Transtar Metals Corp
5330-00-245-542417265A INTERCHANGEABLE
Gasket
Brinkley Technology Group Llc Dba Hercules Manufacturing
5955-00-267-715611639 INTERCHANGEABLE
Retainer,crystal Holder
Entron Industries Limited Partnership Dba Entron Industries Property Div
5950-00-589-085811639 INTERCHANGEABLE
Coil,radio Frequency
Drs Signal Solutions, Inc.
5340-00-652-5679SM-B-187808 INTERCHANGEABLE
Standoff,threaded,spacing
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5999-01-032-8215396220-2 INTERCHANGEABLE
Wire Mesh,knitted
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
3020-01-213-4661 INTERCHANGEABLE
Pulley,groove
9540-01-378-488511639 INTERCHANGEABLE
Angle,structural
Aluminum Co of America
Cross-Reference Index
Part NumberManufacturer
11639 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
5580N PIECE 29 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
9540-00-145-5731INTERCHANGEABLE
ANGLE,STRUCTURAL
60-8684
5330-00-245-5424INTERCHANGEABLE
GASKET
17265A
5955-00-267-7156INTERCHANGEABLE
RETAINER,CRYSTAL HOLDER
11639
5950-00-589-0858INTERCHANGEABLE
COIL,RADIO FREQUENCY
11639
5340-00-652-5679INTERCHANGEABLE
STANDOFF,THREADED,SPACING
SM-B-187808
5999-01-032-8215INTERCHANGEABLE
WIRE MESH,KNITTED
396220-2
3020-01-213-4661INTERCHANGEABLE
PULLEY,GROOVE
9540-01-378-4885INTERCHANGEABLE
ANGLE,STRUCTURAL
11639

Frequently Asked Questions

What is NSN 3120-01-205-5721?

NSN 3120-01-205-5721 is a Bushing,sleeve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-205-5721?

NSN 3120-01-205-5721 has 2 cross-referenced part numbers: 11639 (Leslie Controls, Inc. Dba Leslie Controls Inc), 5580N PIECE 29 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 3120-01-205-5721?

There are 8 known substitutes for 3120-01-205-5721: 9540-00-145-5731, 5330-00-245-5424, 5955-00-267-7156 and 5 more. Verify interchangeability with system specifications before substitution.

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