PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

52401Bearing,sleeve

Kleinschmidt Inc · NSN 3120-00-692-6838 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-692-6838 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-692-6838. Primary manufacturer part number: 52401.
Features
  • Bearing,sleeve — FSC 3120
  • Corner Shape: SQUARE ALL CORNERS
  • Surface Finish: 32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Surface Finish: 32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
  • Surface Finish: 100.0 MICROINCHES LEFT END SURFACE OF BODY
  • Material Document and Classification: QQ-C-465 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Surface Finish: 100.0 MICROINCHES RIGHT END SURFACE OF BODY
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 642 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-692-6838, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Kleinschmidt Inc. Government technical data includes 10 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-00-692-6838
Primary Part Number52401
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerKleinschmidt Inc
StatusACTIVE
Corner ShapeSQUARE ALL CORNERS
Surface Finish32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Surface Finish32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY
Surface Finish100.0 MICROINCHES LEFT END SURFACE OF BODY
Material Document and ClassificationQQ-C-465 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Surface Finish100.0 MICROINCHES RIGHT END SURFACE OF BODY
MaterialCOPPER ALLOY 642 OVERALL
Body Inside Diameter0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN
Body Outside Diameter0.3730 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3110-00-100-0228 INTERCHANGEABLE
Cone and Rollers,tapered Roller
4920-00-614-1380 INTERCHANGEABLE
Accumulator,valve
3110-00-819-303352401 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
8145-01-081-79345240-1 INTERCHANGEABLE
Container
Hardigg Industries, Llc Div Hardigg Cases
4320-01-308-1736524.01 INTERCHANGEABLE
Sleeve,shaft,pump
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
2990-01-326-6129T100-27074 INTERCHANGEABLE
Muffler,exhaust
Ge Aviation Systems, Llc
5310-01-437-0024 INTERCHANGEABLE
Nut,plain,round
5120-01-644-623352401 INTERCHANGEABLE
Extractor,screw
Stanley Tools Div of Stanley Works
Cross-Reference Index
Part NumberManufacturer
52401 Kleinschmidt Inc (USA)
SMB157141 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
Related Parts
3110-00-100-0228INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
4920-00-614-1380INTERCHANGEABLE
ACCUMULATOR,VALVE
3110-00-819-3033INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
52401
8145-01-081-7934INTERCHANGEABLE
CONTAINER
5240-1
4320-01-308-1736INTERCHANGEABLE
SLEEVE,SHAFT,PUMP
524.01
2990-01-326-6129INTERCHANGEABLE
MUFFLER,EXHAUST
T100-27074
5310-01-437-0024INTERCHANGEABLE
NUT,PLAIN,ROUND
5120-01-644-6233INTERCHANGEABLE
EXTRACTOR,SCREW
52401

Frequently Asked Questions

What is NSN 3120-00-692-6838?

NSN 3120-00-692-6838 is a Bearing,sleeve, manufactured by Kleinschmidt Inc, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-692-6838?

NSN 3120-00-692-6838 has 2 cross-referenced part numbers: 52401 (Kleinschmidt Inc), SMB157141 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir).

What NSN replaces 3120-00-692-6838?

There are 8 known substitutes for 3120-00-692-6838: 3110-00-100-0228, 4920-00-614-1380, 3110-00-819-3033 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 52401?

Key specifications for 52401: Corner Shape: SQUARE ALL CORNERS; Surface Finish: 32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Surface Finish: 32.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY. 11 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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