PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12308231Bearing,plain,self-Aligning

Sargent Aerospace & Defense, Llc Dba Kahr Bearings · NSN 3120-01-136-4886 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-136-4886 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-136-4886. Primary manufacturer part number: 12308231.
Features
  • Bearing,plain,self-Aligning — FSC 3120
  • Outer Member Width: 0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
  • Material: ALUMINUM ALLOY INNER MEMBER
  • Material: STEEL BODY
  • Style Designator: WITHOUT INSERT OR LINER
  • Outer Member Outside Diameter: 0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
  • Inner Member Width: 0.4640 INCHES MINIMUM AND 0.4690 INCHES MAXIMUM IN
  • Bore Diameter: 0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Aluminum Alloy Inner Member construction
General Description

The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-136-4886, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Sargent Aerospace & Defense, Llc Dba Kahr Bearings. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN3120-01-136-4886
Primary Part Number12308231
Item NameBearing,plain,self-Aligning
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerSargent Aerospace & Defense, Llc Dba Kahr Bearings
StatusACTIVE
Outer Member Width0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN
MaterialALUMINUM ALLOY INNER MEMBER
MaterialSTEEL BODY
Style DesignatorWITHOUT INSERT OR LINER
Outer Member Outside Diameter0.8745 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN
Inner Member Width0.4640 INCHES MINIMUM AND 0.4690 INCHES MAXIMUM IN
Bore Diameter0.3120 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3120-00-585-4228HASB5 INTERCHANGEABLE
Bearing,plain,self-Aligning
U S Bearings
Cross-Reference Index
Part NumberManufacturer
12308231 PRIMARY Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA)
12308231 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
HASB-5 Sargent Aerospace & Defense, Llc Dba Kahr Bearings (USA)
Related Parts
3120-00-585-4228INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
HASB5

Frequently Asked Questions

What is NSN 3120-01-136-4886?

NSN 3120-01-136-4886 is a Bearing,plain,self-Aligning, manufactured by Sargent Aerospace & Defense, Llc Dba Kahr Bearings, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-136-4886?

NSN 3120-01-136-4886 has 3 cross-referenced part numbers: 12308231 (Sargent Aerospace & Defense, Llc Dba Kahr Bearings), 12308231 (U S Army Tank Automotive Command Amsta-Im-Mm), HASB-5 (Sargent Aerospace & Defense, Llc Dba Kahr Bearings).

What NSN replaces 3120-01-136-4886?

There is 1 known substitute for 3120-01-136-4886: 3120-00-585-4228. Verify interchangeability with system specifications before substitution.

What are the specifications of 12308231?

Key specifications for 12308231: Outer Member Width: 0.3070 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM IN; Material: ALUMINUM ALLOY INNER MEMBER; Material: STEEL BODY; Style Designator: WITHOUT INSERT OR LINER. 8 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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