PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6L4003Gear Bushing,valve

Caterpillar Inc Div Caterpillar Defense · NSN 2990-00-036-5900 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-036-5900 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-036-5900. Primary manufacturer part number: 6L4003.
Features
  • Gear Bushing,valve — FSC 2990
  • General Characteristics Item Description: STEEL,3.500 IN. O/A LG,CASE HARDEN 0.010 IN. @DEEP IN
  • 6 verified cross-references
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Power transmission and speed reduction
  • Rotary motion transfer
General Description

The Gear Bushing,valve, cataloged under National Stock Number 2990-00-036-5900, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories 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 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2990-00-036-5900
Primary Part Number6L4003
Item NameGear Bushing,valve
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusCANCELLED
General Characteristics Item DescriptionSTEEL,3.500 IN. O/A LG,CASE HARDEN 0.010 IN. @DEEP IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5998-00-421-7649370041 INTERCHANGEABLE
Circuit Card Assembly
Raytheon Company Dba Raytheon Co
4330-00-482-8147 INTERCHANGEABLE
Filter,fluid
5935-00-725-5756 INTERCHANGEABLE
Connector,plug,electrical
5977-01-342-174337004-1 INTERCHANGEABLE
Holder,electrical Contact Brush
Evoqua Water Technologies Llc
Cross-Reference Index
Part NumberManufacturer
370041R-AA Woodward, Inc. Div Fuel Systems and Controls (USA)
6L4003 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
370041 Woodward, Inc. Div Fuel Systems and Controls (USA)
37002-54 Woodward, Inc. Div Fuel Systems and Controls (USA)
6L4003 Holt Bros (USA)
DLT589615 Wartsila France SAS (FRA)
Related Parts
5998-00-421-7649INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
370041
4330-00-482-8147INTERCHANGEABLE
FILTER,FLUID
5935-00-725-5756INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5977-01-342-1743INTERCHANGEABLE
HOLDER,ELECTRICAL CONTACT BRUSH
37004-1

Frequently Asked Questions

What is NSN 2990-00-036-5900?

NSN 2990-00-036-5900 is a Gear Bushing,valve, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2990-00-036-5900?

NSN 2990-00-036-5900 has 6 cross-referenced part numbers: 370041R-AA (Woodward, Inc. Div Fuel Systems and Controls), 6L4003 (Caterpillar Inc Div Caterpillar Defense), 370041 (Woodward, Inc. Div Fuel Systems and Controls), 37002-54 (Woodward, Inc. Div Fuel Systems and Controls), 6L4003 (Holt Bros) and 1 more.

What NSN replaces 2990-00-036-5900?

There are 4 known substitutes for 2990-00-036-5900: 5998-00-421-7649, 4330-00-482-8147, 5935-00-725-5756 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 6L4003?

Key specifications for 6L4003: General Characteristics Item Description: STEEL,3.500 IN. O/A LG,CASE HARDEN 0.010 IN. @DEEP IN. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2990-00-036-5900 still in active supply?

NSN 2990-00-036-5900 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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