PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12991Gear,internal

Mitsubishi Caterpillar Forklift America, Inc · NSN 3020-00-334-0551 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-334-0551 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-334-0551. Primary manufacturer part number: 12991.
Features
  • Gear,internal — FSC 3020
  • 4 verified cross-references
  • Primary manufacturer: Mitsubishi Caterpillar Forklift America, Inc
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear,internal, cataloged under National Stock Number 3020-00-334-0551, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Mitsubishi Caterpillar Forklift America, Inc. This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameGear,internal
FSC / FSG3020 — No Item Name Available (FSG 30)
ManufacturersLift Parts Mfg Co Inc Div of Echlin Mfg Co the (CAGE 16662); Mitsubishi Caterpillar Forklift America, Inc (CAGE 78640); Tvh Parts Co. (CAGE 66654); Caterpillar Inc Div Caterpillar Defense (CAGE 11083)
Technical Specifications
ParameterValue
NSN3020-00-334-0551
Primary Part Number12991
Item NameGear,internal
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerMitsubishi Caterpillar Forklift America, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
6210-00-299-42935200-222-303CLEAR INTERCHANGEABLE
Light,indicator
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
6125-00-511-8785JH12991 INTERCHANGEABLE
Block,term
Safran Power Usa Llc
5999-00-673-9381 INTERCHANGEABLE
Clip,electrical
4310-00-732-75451-299-1 INTERCHANGEABLE
Cylinder Air Compre
Dresser Industries Inc Leroi Div
5950-00-735-8727328066-1 INTERCHANGEABLE
Transformer,power
Raytheon Company
5355-00-834-787212991 INTERCHANGEABLE
Pointer,dial
Elbitamerica, Inc.
5136-00-889-6970 INTERCHANGEABLE
Tap,thread Cutting
5950-01-256-022111568074 INTERCHANGEABLE
Transformer,power
Us Army Aviation and Missile Command
5340-01-695-4335012991 INTERCHANGEABLE
Bracket,mounting
Chemring Sensors and Electronic Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
09-12991 Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA)
12991 PRIMARY Mitsubishi Caterpillar Forklift America, Inc (USA)
09-12991 Tvh Parts Co. (USA)
012991 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
6210-00-299-4293INTERCHANGEABLE
LIGHT,INDICATOR
5200-222-303CLEAR
6125-00-511-8785INTERCHANGEABLE
BLOCK,TERM
JH12991
5999-00-673-9381INTERCHANGEABLE
CLIP,ELECTRICAL
4310-00-732-7545INTERCHANGEABLE
CYLINDER AIR COMPRE
1-299-1
5950-00-735-8727INTERCHANGEABLE
TRANSFORMER,POWER
328066-1
5355-00-834-7872INTERCHANGEABLE
POINTER,DIAL
12991
5136-00-889-6970INTERCHANGEABLE
TAP,THREAD CUTTING
5950-01-256-0221INTERCHANGEABLE
TRANSFORMER,POWER
11568074
5340-01-695-4335INTERCHANGEABLE
BRACKET,MOUNTING
012991

Frequently Asked Questions

What is NSN 3020-00-334-0551?

NSN 3020-00-334-0551 is a Gear,internal, manufactured by Mitsubishi Caterpillar Forklift America, Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-334-0551?

NSN 3020-00-334-0551 has 4 cross-referenced part numbers: 09-12991 (Lift Parts Mfg Co Inc Div of Echlin Mfg Co the), 12991 (Mitsubishi Caterpillar Forklift America, Inc), 09-12991 (Tvh Parts Co.), 012991 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 3020-00-334-0551?

There are 9 known substitutes for 3020-00-334-0551: 6210-00-299-4293, 6125-00-511-8785, 5999-00-673-9381 and 6 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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