PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA1043Bearing,sleeve

Bunting Bearings Corp · NSN 3120-01-188-9525 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-188-9525 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-188-9525. Primary manufacturer part number: AA1043.
Features
  • Bearing,sleeve — FSC 3120
  • Body Inside Diameter: 0.7530 INCHES NOMINAL IN
  • Material: COPPER ALLOY 841 OVERALL
  • Style Designator: ERR-090
  • Body Outside Diameter: 1.0030 INCHES NOMINAL IN
  • Corner Shape: SQUARE ALL CORNERS
  • 5 verified cross-references
  • Primary manufacturer: Bunting Bearings Corp
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 841 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-188-9525, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Bunting Bearings Corp. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, 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
NSN3120-01-188-9525
Primary Part NumberAA1043
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerBunting Bearings Corp
StatusACTIVE
Body Inside Diameter0.7530 INCHES NOMINAL IN
MaterialCOPPER ALLOY 841 OVERALL
Style DesignatorERR-090
Body Outside Diameter1.0030 INCHES NOMINAL IN
Corner ShapeSQUARE ALL CORNERS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5350-00-240-2920R1-00 INTERCHANGEABLE
Wool,metallic
International Steel Wool Corp
5350-00-242-4403R1-CSS INTERCHANGEABLE
Wool,metallic
International Steel Wool Corp
5350-00-242-4404R1-1 INTERCHANGEABLE
Wool,metallic
International Steel Wool Corp
5350-00-242-44055350-00-242-4405 INTERCHANGEABLE
Wool,metallic
General Services Administration Federal Supply Service
5350-00-242-4406430 INTERCHANGEABLE
Wool,metallic
Williams Co the
5350-00-271-5946R5-3 COARSE INTERCHANGEABLE
Wool,metallic
International Steel Wool Corp
5350-00-312-6129702 INTERCHANGEABLE
Wool,metallic
Palmer Engineered Products, Inc
Cross-Reference Index
Part NumberManufacturer
AA1043 Bunting Bearings Corp (USA)
AA-1043 Bunting Bearings Corp Kalamazoo Plant (USA)
AA-1043 Bunting Bearings Llc Dba Bunting Bearings Corp (USA)
AA-1043 Chrysler Corp Amplex Div (USA)
AA-1043 Beemer Precision Inc (USA)
Related Parts
5350-00-240-2920INTERCHANGEABLE
WOOL,METALLIC
R1-00
5350-00-242-4403INTERCHANGEABLE
WOOL,METALLIC
R1-CSS
5350-00-242-4404INTERCHANGEABLE
WOOL,METALLIC
R1-1
5350-00-242-4405INTERCHANGEABLE
WOOL,METALLIC
5350-00-242-4405
5350-00-242-4406INTERCHANGEABLE
WOOL,METALLIC
430
5350-00-271-5946INTERCHANGEABLE
WOOL,METALLIC
R5-3 COARSE
5350-00-312-6129INTERCHANGEABLE
WOOL,METALLIC
702

Frequently Asked Questions

What is NSN 3120-01-188-9525?

NSN 3120-01-188-9525 is a Bearing,sleeve, manufactured by Bunting Bearings Corp, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-188-9525?

NSN 3120-01-188-9525 has 5 cross-referenced part numbers: AA1043 (Bunting Bearings Corp), AA-1043 (Bunting Bearings Corp Kalamazoo Plant), AA-1043 (Bunting Bearings Llc Dba Bunting Bearings Corp), AA-1043 (Chrysler Corp Amplex Div), AA-1043 (Beemer Precision Inc).

What NSN replaces 3120-01-188-9525?

There are 7 known substitutes for 3120-01-188-9525: 5350-00-240-2920, 5350-00-242-4403, 5350-00-242-4404 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AA1043?

Key specifications for AA1043: Body Inside Diameter: 0.7530 INCHES NOMINAL IN; Overall Length: 1.2500 INCHES NOMINAL IN; Material: COPPER ALLOY 841 OVERALL; Style Designator: ERR-090. 6 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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