PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66-5212-2Bushing,sleeve

The Boeing Company Div Defense · NSN 3120-00-238-1843 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-238-1843 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-238-1843. Primary manufacturer part number: 66-5212-2.
Features
  • Bushing,sleeve — FSC 3120
  • Flange Width: 0.0800 INCHES NOMINAL IN
  • Body Outside Diameter: 0.9375 INCHES MINIMUM AND 0.9382 INCHES MAXIMUM IN
  • Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
  • Surface Finish: 125.0 MICROINCHES RIGHT END SURFACE OF BODY
  • Surface Treatment: CADMIUM OUTSIDE DIAMETER SURFACE OF BODY
  • Corner Shape: SQUARE INSIDE RIGHT CORNER
  • Material: STEEL COMP 4340 OR STEEL COMP E4340 OVERALL
Applications
  • Applications requiring Steel Comp 4340 or Steel Comp E4340 Overall construction
General Description

The Bushing,sleeve, cataloged under National Stock Number 3120-00-238-1843, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN3120-00-238-1843
Primary Part Number66-5212-2
Item NameBushing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Flange Width0.0800 INCHES NOMINAL IN
Body Outside Diameter0.9375 INCHES MINIMUM AND 0.9382 INCHES MAXIMUM IN
Surface Finish125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
Surface Finish125.0 MICROINCHES RIGHT END SURFACE OF BODY
Surface TreatmentCADMIUM OUTSIDE DIAMETER SURFACE OF BODY
Corner ShapeSQUARE INSIDE RIGHT CORNER
MaterialSTEEL COMP 4340 OR STEEL COMP E4340 OVERALL
Corner ShapeSQUARE INSIDE LEFT CORNER
Surface TreatmentCADMIUM LEFT END SURFACE OF BODY AND FLANGE
Corner ShapeSQUARE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Surface TreatmentCADMIUM INSIDE DIAMETER SURFACE OF BODY
Surface Finish125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE
Corner ShapeSQUARE LEFT FLANGE BODY CORNER
Surface Finish125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
Surface TreatmentCADMIUM OUTSIDE DIAMETER SURFACE OF FLANGE
Material Document and ClassificationMIL-S-5000 MIL SPEC ALL MATERIAL RESPONSES OVERALL
Style DesignatorSOLID, EXTERNAL FLANGE ONE END
Surface Finish125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Surface Groove Location and Quantity1 EXTERNAL
Flange Outside Diameter1.1180 INCHES MINIMUM AND 1.1220 INCHES MAXIMUM IN
Body Inside Diameter0.7490 INCHES MINIMUM AND 0.7497 INCHES MAXIMUM IN
Lubricant Accommodation StyleGROOVED CIRCULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5325-00-298-6563 INTERCHANGEABLE
Ring,retaining
Cross-Reference Index
Part NumberManufacturer
35-29301-2 The Boeing Company Div Defense (USA)
66-5212-2 PRIMARY The Boeing Company Div Defense (USA)
Related Parts
5325-00-298-6563INTERCHANGEABLE
RING,RETAINING

Frequently Asked Questions

What is NSN 3120-00-238-1843?

NSN 3120-00-238-1843 is a Bushing,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-238-1843?

NSN 3120-00-238-1843 has 2 cross-referenced part numbers: 35-29301-2 (The Boeing Company Div Defense), 66-5212-2 (The Boeing Company Div Defense).

What NSN replaces 3120-00-238-1843?

There is 1 known substitute for 3120-00-238-1843: 5325-00-298-6563. Verify interchangeability with system specifications before substitution.

What are the specifications of 66-5212-2?

Key specifications for 66-5212-2: Flange Width: 0.0800 INCHES NOMINAL IN; Body Outside Diameter: 0.9375 INCHES MINIMUM AND 0.9382 INCHES MAXIMUM IN; Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Surface Finish: 125.0 MICROINCHES RIGHT END SURFACE OF BODY. 25 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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