PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

01-299Bearing,sleeve

Ontic Engineering & Manufacturing, Inc Dba Ontic Us · NSN 3120-00-305-5381 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-305-5381 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-305-5381. Primary manufacturer part number: 01-299.
Features
  • Bearing,sleeve — FSC 3120
  • Flange Outside Diameter: 0.8740 INCHES MINIMUM AND 0.8745 INCHES MAXIMUM IN
  • Body Outside Diameter: 0.5600 INCHES MINIMUM AND 0.5605 INCHES MAXIMUM IN
  • Corner Shape: SQUARE ALL CORNERS
  • Body Inside Diameter: 0.3750 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN
  • Flange Width: 0.1400 INCHES MINIMUM AND 0.1405 INCHES MAXIMUM IN
  • 2 verified cross-references
  • Primary manufacturer: Ontic Engineering & Manufacturing, Inc Dba Ontic Us
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-305-5381, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Ontic Engineering & Manufacturing, Inc Dba Ontic Us. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3120-00-305-5381
Primary Part Number01-299
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerOntic Engineering & Manufacturing, Inc Dba Ontic Us
StatusCANCELLED
Flange Outside Diameter0.8740 INCHES MINIMUM AND 0.8745 INCHES MAXIMUM IN
Body Outside Diameter0.5600 INCHES MINIMUM AND 0.5605 INCHES MAXIMUM IN
Corner ShapeSQUARE ALL CORNERS
Body Inside Diameter0.3750 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN
Flange Width0.1400 INCHES MINIMUM AND 0.1405 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5970-00-284-8176 INTERCHANGEABLE
Insulator,standoff
5325-00-470-81980129-9 INTERCHANGEABLE
Grommet
Northrop Grumman Systems Corporation
5330-00-842-302601299 INTERCHANGEABLE
Gasket
Defense Logistics Agency Dba Defense Supply Center Philadelphia
3120-01-098-1609 INTERCHANGEABLE
Bearing,sleeve
5133-01-112-9533 INTERCHANGEABLE
Drill,twist
Cross-Reference Index
Part NumberManufacturer
01-299 Donallco Inc (USA)
01-299 PRIMARY Ontic Engineering & Manufacturing, Inc Dba Ontic Us (USA)
Related Parts
5970-00-284-8176INTERCHANGEABLE
INSULATOR,STANDOFF
5325-00-470-8198INTERCHANGEABLE
GROMMET
0129-9
5330-00-842-3026INTERCHANGEABLE
GASKET
01299
3120-01-098-1609INTERCHANGEABLE
BEARING,SLEEVE
5133-01-112-9533INTERCHANGEABLE
DRILL,TWIST

Frequently Asked Questions

What is NSN 3120-00-305-5381?

NSN 3120-00-305-5381 is a Bearing,sleeve, manufactured by Ontic Engineering & Manufacturing, Inc Dba Ontic Us, classified under FSC 3120 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3120-00-305-5381?

NSN 3120-00-305-5381 has 2 cross-referenced part numbers: 01-299 (Donallco Inc), 01-299 (Ontic Engineering & Manufacturing, Inc Dba Ontic Us).

What NSN replaces 3120-00-305-5381?

There are 5 known substitutes for 3120-00-305-5381: 5970-00-284-8176, 5325-00-470-8198, 5330-00-842-3026 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 01-299?

Key specifications for 01-299: Flange Outside Diameter: 0.8740 INCHES MINIMUM AND 0.8745 INCHES MAXIMUM IN; Body Outside Diameter: 0.5600 INCHES MINIMUM AND 0.5605 INCHES MAXIMUM IN; Corner Shape: SQUARE ALL CORNERS; Body Inside Diameter: 0.3750 INCHES MINIMUM AND 0.3755 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3120-00-305-5381 still in active supply?

NSN 3120-00-305-5381 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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