PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AA3100Bearing,sleeve

Bunting Bearings Corp · NSN 3120-01-437-4800 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-437-4800 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-437-4800. Primary manufacturer part number: AA3100.
Features
  • Bearing,sleeve — FSC 3120
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Corner Shape: SQUARE ALL CORNERS
  • Body Outside Diameter: 3.1290 INCHES NOMINAL IN
  • Body Inside Diameter: 2.7530 INCHES NOMINAL IN
  • Material: COPPER ALLOY 841 OVERALL
  • 3 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 3120-01-437-4800, 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 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-437-4800
Primary Part NumberAA3100
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerBunting Bearings Corp
StatusACTIVE
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Corner ShapeSQUARE ALL CORNERS
Body Outside Diameter3.1290 INCHES NOMINAL IN
Body Inside Diameter2.7530 INCHES NOMINAL IN
MaterialCOPPER ALLOY 841 OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3110-00-142-4364342S INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
7920-00-151-61207920001516120 INTERCHANGEABLE
Pad,cleaning,aircraft
National Industries for the Blind
7920-00-171-15347920001711534 INTERCHANGEABLE
Pad,cleaning,aircraft
National Industries for the Blind
3020-00-462-2152 INTERCHANGEABLE
Gear Sun,primary
5310-01-084-2512189025 INTERCHANGEABLE
Washer,flat
Mission Systems Orchard Park Inc
6130-01-233-5328PP-7821/FSS-12(V) INTERCHANGEABLE
Power Supply
Joint Electronics Type Designation System
6910-01-362-863525000033 INTERCHANGEABLE
Trainer,airway,intubation-Ventil
Laerdal Medical Corporation
5310-01-641-382971071 INTERCHANGEABLE
Washer,lock
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
7107-1 Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution (USA)
7107-1 Eaton Aviation Corporation (USA)
AA3100 PRIMARY Bunting Bearings Corp (USA)
Related Parts
3110-00-142-4364INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
342S
7920-00-151-6120INTERCHANGEABLE
PAD,CLEANING,AIRCRAFT
7920001516120
7920-00-171-1534INTERCHANGEABLE
PAD,CLEANING,AIRCRAFT
7920001711534
3020-00-462-2152INTERCHANGEABLE
GEAR SUN,PRIMARY
5310-01-084-2512INTERCHANGEABLE
WASHER,FLAT
189025
6130-01-233-5328INTERCHANGEABLE
POWER SUPPLY
PP-7821/FSS-12(V)
6910-01-362-8635INTERCHANGEABLE
TRAINER,AIRWAY,INTUBATION-VENTIL
25000033
5310-01-641-3829INTERCHANGEABLE
WASHER,LOCK
71071

Frequently Asked Questions

What is NSN 3120-01-437-4800?

NSN 3120-01-437-4800 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 3120-01-437-4800?

NSN 3120-01-437-4800 has 3 cross-referenced part numbers: 7107-1 (Eaton Aeroquip Llc Dba Jackson North 1 Div Fluid and Electrical Distribution), 7107-1 (Eaton Aviation Corporation), AA3100 (Bunting Bearings Corp).

What NSN replaces 3120-01-437-4800?

There are 8 known substitutes for 3120-01-437-4800: 3110-00-142-4364, 7920-00-151-6120, 7920-00-171-1534 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AA3100?

Key specifications for AA3100: Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 3.1290 INCHES NOMINAL IN; Body Inside Diameter: 2.7530 INCHES NOMINAL IN. 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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