PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-456Bearing,sleeve

Dresser Industries Inc Leroi Div · NSN 3120-00-696-0423 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-696-0423 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-696-0423. Primary manufacturer part number: 21-456.
Features
  • Bearing,sleeve — FSC 3120
  • Corner Shape: SQUARE ALL CORNERS
  • Material: COPPER ALLOY OVERALL
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Body Outside Diameter: 0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
  • Material: LUBRICANT LUBRICATION
  • Body Inside Diameter: 0.3770 INCHES MINIMUM AND 0.3780 INCHES MAXIMUM IN
  • 3 verified cross-references
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-696-0423, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Dresser Industries Inc Leroi Div. Government technical data includes 6 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-696-0423
Primary Part Number21-456
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerDresser Industries Inc Leroi Div
StatusACTIVE
Corner ShapeSQUARE ALL CORNERS
MaterialCOPPER ALLOY OVERALL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Body Outside Diameter0.5010 INCHES MINIMUM AND 0.5020 INCHES MAXIMUM IN
MaterialLUBRICANT LUBRICATION
Body Inside Diameter0.3770 INCHES MINIMUM AND 0.3780 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
7520-00-168-0228 INTERCHANGEABLE
Pen,recording
6550-00-541-2980 INTERCHANGEABLE
Blood Collecting-Culture Bottle
9905-01-239-6775 INTERCHANGEABLE
Plate,identification
Cross-Reference Index
Part NumberManufacturer
8333234 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
1A21-456 Fwd Seagrave Holdings Lp (USA)
21-456 PRIMARY Dresser Industries Inc Leroi Div (USA)
Related Parts
7520-00-168-0228INTERCHANGEABLE
PEN,RECORDING
6550-00-541-2980INTERCHANGEABLE
BLOOD COLLECTING-CULTURE BOTTLE
9905-01-239-6775INTERCHANGEABLE
PLATE,IDENTIFICATION

Frequently Asked Questions

What is NSN 3120-00-696-0423?

NSN 3120-00-696-0423 is a Bearing,sleeve, manufactured by Dresser Industries Inc Leroi Div, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-696-0423?

NSN 3120-00-696-0423 has 3 cross-referenced part numbers: 8333234 (U S Army Tank Automotive Command Amsta-Im-Mm), 1A21-456 (Fwd Seagrave Holdings Lp), 21-456 (Dresser Industries Inc Leroi Div).

What NSN replaces 3120-00-696-0423?

There are 3 known substitutes for 3120-00-696-0423: 7520-00-168-0228, 6550-00-541-2980, 9905-01-239-6775. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-456?

Key specifications for 21-456: Overall Length: 0.5000 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS; Material: COPPER ALLOY OVERALL; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 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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