PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

K143Bearing,sleeve

Dynalec Corporation · NSN 3120-01-131-6836 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-01-131-6836 — this item is cataloged by the U.S. Government under National Stock Number 3120-01-131-6836. Primary manufacturer part number: K143.
Features
  • Bearing,sleeve — FSC 3120
  • Corner Shape: SQUARE ALL CORNERS
  • Body Outside Diameter: 0.5000 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN
  • Body Inside Diameter: 0.3750 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: Dynalec Corporation
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-01-131-6836, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Dynalec Corporation. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3120-01-131-6836
Primary Part NumberK143
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerDynalec Corporation
StatusACTIVE
Corner ShapeSQUARE ALL CORNERS
Body Outside Diameter0.5000 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN
Body Inside Diameter0.3750 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-00-807-1474MS21042L3 INTERCHANGEABLE
Nut,self-Locking,extended Washer
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
Cross-Reference Index
Part NumberManufacturer
PR2017-1 PIECE 34 The Electric Tachometer Corp. (USA)
K143 PRIMARY Dynalec Corporation (USA)
K143 The Electric Tachometer Corp. (USA)
Related Parts
5310-00-807-1474INTERCHANGEABLE
NUT,SELF-LOCKING,EXTENDED WASHER
MS21042L3

Frequently Asked Questions

What is NSN 3120-01-131-6836?

NSN 3120-01-131-6836 is a Bearing,sleeve, manufactured by Dynalec Corporation, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-01-131-6836?

NSN 3120-01-131-6836 has 3 cross-referenced part numbers: PR2017-1 PIECE 34 (The Electric Tachometer Corp.), K143 (Dynalec Corporation), K143 (The Electric Tachometer Corp.).

What NSN replaces 3120-01-131-6836?

There is 1 known substitute for 3120-01-131-6836: 5310-00-807-1474. Verify interchangeability with system specifications before substitution.

What are the specifications of K143?

Key specifications for K143: Overall Length: 0.2600 INCHES NOMINAL IN; Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 0.5000 INCHES MINIMUM AND 0.5010 INCHES MAXIMUM IN; Body Inside Diameter: 0.3750 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN. 4 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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