PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS21233-7Bearing,plain,self-Aligning

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 3120-00-932-3676 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-932-3676 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-932-3676. Primary manufacturer part number: MS21233-7.
Features
  • Bearing,plain,self-Aligning — FSC 3120
  • Bore Diameter: 0.4370 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
  • Surface Treatment: PASSIVATE OUTER RACE MEMBER
  • Style Designator: WITH INSERT AND/OR LINER
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE RACE LINER
  • Material: STEEL CORROSION RESISTING OUTER RACE MEMBER
  • Material: STEEL COMP 440C INNER MEMBER
  • Hardness Rating: 55.0 ROCKWELL C MINIMUM INNER MEMBER
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Plastic Polytetrafluoroethylene Race Liner construction
General Description

The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-00-932-3676, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-932-3676
Primary Part NumberMS21233-7
Item NameBearing,plain,self-Aligning
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Bore Diameter0.4370 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN
Surface TreatmentPASSIVATE OUTER RACE MEMBER
Style DesignatorWITH INSERT AND/OR LINER
MaterialPLASTIC POLYTETRAFLUOROETHYLENE RACE LINER
MaterialSTEEL CORROSION RESISTING OUTER RACE MEMBER
MaterialSTEEL COMP 440C INNER MEMBER
Hardness Rating55.0 ROCKWELL C MINIMUM INNER MEMBER
Static Radial Load Rating13200 POUNDS LBS
Surface TreatmentPASSIVATE INNER MEMBER
Hardness Rating23.0 ROCKWELL C MINIMUM OUTER RACE MEMBER
Outer Member Outside Diameter0.9057 INCHES MINIMUM AND 0.9062 INCHES MAXIMUM IN
Inner Member Width0.4350 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM IN
Outer Member Width0.3380 INCHES MINIMUM AND 0.3480 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
3120-01-165-1128MS14104-7 INTERCHANGEABLE
Bearing,plain,self-Aligning
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
MS21233-7 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
NRT Roller Bearing Company of America, Inc. (USA)
HSB7TL107 U S Bearings (USA)
Related Parts
3120-01-165-1128INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
MS14104-7

Frequently Asked Questions

What is NSN 3120-00-932-3676?

NSN 3120-00-932-3676 is a Bearing,plain,self-Aligning, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-932-3676?

NSN 3120-00-932-3676 has 3 cross-referenced part numbers: MS21233-7 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), NRT (Roller Bearing Company of America, Inc.), HSB7TL107 (U S Bearings).

What NSN replaces 3120-00-932-3676?

There is 1 known substitute for 3120-00-932-3676: 3120-01-165-1128. Verify interchangeability with system specifications before substitution.

What are the specifications of MS21233-7?

Key specifications for MS21233-7: Bore Diameter: 0.4370 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM IN; Surface Treatment: PASSIVATE OUTER RACE MEMBER; Style Designator: WITH INSERT AND/OR LINER; Material: PLASTIC POLYTETRAFLUOROETHYLENE RACE LINER. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-932-3676 still in active supply?

NSN 3120-00-932-3676 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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