PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3L6649Power Unit,electri

Caterpillar Inc Div Caterpillar Defense · NSN 6620-00-003-1295 · FSC 6620 · No Item Name Available
Verified by PartsTable
NSN 6620-00-003-1295 — this item is cataloged by the U.S. Government under National Stock Number 6620-00-003-1295. Primary manufacturer part number: 3L6649.
Features
  • Power Unit,electri — FSC 6620
  • General Characteristics Item Description: 6.750 IN. LG,4.312 IN. W,2.531 IN. H IN
  • 2 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Power Unit,electri, cataloged under National Stock Number 6620-00-003-1295, is classified within Federal Supply Class 6620 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 verified specification, 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6620-00-003-1295
Primary Part Number3L6649
Item NamePower Unit,electri
FSC / FSG6620 / 66 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
General Characteristics Item Description6.750 IN. LG,4.312 IN. W,2.531 IN. H IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5940-01-089-25395210-4-1 INTERCHANGEABLE
Terminal,stud
Advanced Interconnections Corporation
2930-01-497-8559 INTERCHANGEABLE
Hub,fan Clutch
Cross-Reference Index
Part NumberManufacturer
2-1842-1 Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc (USA)
3L6649 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5940-01-089-2539INTERCHANGEABLE
TERMINAL,STUD
5210-4-1
2930-01-497-8559INTERCHANGEABLE
HUB,FAN CLUTCH

Frequently Asked Questions

What is NSN 6620-00-003-1295?

NSN 6620-00-003-1295 is a Power Unit,electri, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 6620 (No Item Name Available). Status: active.

What are the part numbers for NSN 6620-00-003-1295?

NSN 6620-00-003-1295 has 2 cross-referenced part numbers: 2-1842-1 (Jaidinger Manufacturing Co Inc Dba Jaidinger Manufacturing Co Inc), 3L6649 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 6620-00-003-1295?

There are 2 known substitutes for 6620-00-003-1295: 5940-01-089-2539, 2930-01-497-8559. Verify interchangeability with system specifications before substitution.

What are the specifications of 3L6649?

Key specifications for 3L6649: General Characteristics Item Description: 6.750 IN. LG,4.312 IN. W,2.531 IN. H IN. 1 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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