PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ML21ABearing,sleeve

Prestolite Electric Inc · NSN 3120-00-293-5488 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-293-5488 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-293-5488. Primary manufacturer part number: ML21A.
Features
  • Bearing,sleeve — FSC 3120
  • Body Inside Diameter: 0.8760 INCHES MINIMUM AND 0.8770 INCHES MAXIMUM IN
  • Corner Shape: SQUARE ALL CORNERS
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Material: LUBRICANT LUBRICATION
  • Material: COPPER ALLOY OVERALL
  • Body Outside Diameter: 1.0003 INCHES MINIMUM AND 1.0004 INCHES MAXIMUM IN
  • 2 verified cross-references
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Lubricant Lubrication construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-293-5488, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Prestolite Electric Inc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-293-5488
Primary Part NumberML21A
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerPrestolite Electric Inc
StatusACTIVE
Body Inside Diameter0.8760 INCHES MINIMUM AND 0.8770 INCHES MAXIMUM IN
Corner ShapeSQUARE ALL CORNERS
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
MaterialLUBRICANT LUBRICATION
MaterialCOPPER ALLOY OVERALL
Body Outside Diameter1.0003 INCHES MINIMUM AND 1.0004 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3120-00-367-3585 INTERCHANGEABLE
Bearing,sleeve
3120-00-425-6467MS17795-128 INTERCHANGEABLE
Bearing,sleeve
American Society for Testing and Materials Dba Astm International
5962-00-938-9315 INTERCHANGEABLE
Microcircuit,digital
Cross-Reference Index
Part NumberManufacturer
ML21A Prestolite Electric Inc (USA)
ML21A PRIMARY Prestolite Electric Inc (USA)
Related Parts
3120-00-367-3585INTERCHANGEABLE
BEARING,SLEEVE
3120-00-425-6467INTERCHANGEABLE
BEARING,SLEEVE
MS17795-128
5962-00-938-9315INTERCHANGEABLE
MICROCIRCUIT,DIGITAL

Frequently Asked Questions

What is NSN 3120-00-293-5488?

NSN 3120-00-293-5488 is a Bearing,sleeve, manufactured by Prestolite Electric Inc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-293-5488?

NSN 3120-00-293-5488 has 2 cross-referenced part numbers: ML21A (Prestolite Electric Inc), ML21A (Prestolite Electric Inc).

What NSN replaces 3120-00-293-5488?

There are 3 known substitutes for 3120-00-293-5488: 3120-00-367-3585, 3120-00-425-6467, 5962-00-938-9315. Verify interchangeability with system specifications before substitution.

What are the specifications of ML21A?

Key specifications for ML21A: Body Inside Diameter: 0.8760 INCHES MINIMUM AND 0.8770 INCHES MAXIMUM IN; Corner Shape: SQUARE ALL CORNERS; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Material: LUBRICANT LUBRICATION. 7 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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