PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1U6681Finger,mechanical

Caterpillar Inc Div Caterpillar Defense · NSN 5120-01-372-3966 · FSC 5120 · No Item Name Available
Verified by PartsTable
NSN 5120-01-372-3966 — this item is cataloged by the U.S. Government under National Stock Number 5120-01-372-3966. Primary manufacturer part number: 1U6681.
Features
  • Finger,mechanical — FSC 5120
  • 2 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Field maintenance and repair
  • Facility maintenance operations
  • General-purpose hand tools
General Description

The Finger,mechanical, cataloged under National Stock Number 5120-01-372-3966, is classified within Federal Supply Class 5120 (No Item Name Available) of the Hand Tools group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5120-01-372-3966
Primary Part Number1U6681
Item NameFinger,mechanical
FSC / FSG5120 / 51 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5950-00-156-0637 INTERCHANGEABLE
Transformer,power
3020-00-255-2735SCB69374 INTERCHANGEABLE
Gear,helical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5330-00-286-6868ID 1.625IN X OD 2.374 X .50IN W INTERCHANGEABLE
Seal,plain Encased
Defense Logistics Agency Dba Defense Supply Center Philadelphia
9540-01-086-1811 INTERCHANGEABLE
Beam,structural
5995-01-359-7305 INTERCHANGEABLE
Cable Assembly,power,electrical
5340-01-699-110650358 INTERCHANGEABLE
Plunger,detent
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
Cross-Reference Index
Part NumberManufacturer
50358 K-Line Industries, Inc. (USA)
1U6681 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5950-00-156-0637INTERCHANGEABLE
TRANSFORMER,POWER
3020-00-255-2735INTERCHANGEABLE
GEAR,HELICAL
SCB69374
5330-00-286-6868INTERCHANGEABLE
SEAL,PLAIN ENCASED
ID 1.625IN X OD 2.374 X .50IN W
9540-01-086-1811INTERCHANGEABLE
BEAM,STRUCTURAL
5995-01-359-7305INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
5340-01-699-1106INTERCHANGEABLE
PLUNGER,DETENT
50358

Frequently Asked Questions

What is NSN 5120-01-372-3966?

NSN 5120-01-372-3966 is a Finger,mechanical, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5120 (No Item Name Available). Status: active.

What are the part numbers for NSN 5120-01-372-3966?

NSN 5120-01-372-3966 has 2 cross-referenced part numbers: 50358 (K-Line Industries, Inc.), 1U6681 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5120-01-372-3966?

There are 6 known substitutes for 5120-01-372-3966: 5950-00-156-0637, 3020-00-255-2735, 5330-00-286-6868 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1U6681?

Key specifications for 1U6681: End Item Identification: CATERPILLAR PART NO. 1U6675 TOOL GROUP GOVERNOR AND FUEL INJECTION ADJUSTING. 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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