PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

70504R2Gear Cluster

Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ · NSN 3020-00-311-7043 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-311-7043 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-311-7043. Primary manufacturer part number: 70504R2.
Features
  • Gear Cluster — FSC 3020
  • Nominal Overall Length: 1.719 INCHES IN
  • Bore Nominal Diameter: 1.753 INCHES BOTH ENDS IN
  • Hub Nominal Diameter: 3.000 INCHES BETWEEN FIRST AND SECOND GEAR IN
  • Nominal Outside Diameter: 3.5000 INCHES SECOND GEAR IN
  • Bore Style: PLAIN BOTH ENDS
  • Design Type: SPUR SECOND GEAR
  • Hub Nominal Length: 0.156 INCHES BETWEEN FIRST AND SECOND GEAR IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 8620 Overall construction
General Description

The Gear Cluster, cataloged under National Stock Number 3020-00-311-7043, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-311-7043
Primary Part Number70504R2
Item NameGear Cluster
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerNavistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
StatusCANCELLED
Nominal Overall Length1.719 INCHES IN
Bore Nominal Diameter1.753 INCHES BOTH ENDS IN
Hub Nominal Diameter3.000 INCHES BETWEEN FIRST AND SECOND GEAR IN
Nominal Outside Diameter3.5000 INCHES SECOND GEAR IN
Bore StylePLAIN BOTH ENDS
Design TypeSPUR SECOND GEAR
Hub Nominal Length0.156 INCHES BETWEEN FIRST AND SECOND GEAR IN
Material Document and ClassificationSAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Hub Style DesignatorPLAIN BETWEEN FIRST AND SECOND GEAR
MaterialSTEEL COMP 8620 OVERALL
Design TypeHELICAL FIRST GEAR
Nominal Outside Diameter4.7830 INCHES FIRST GEAR IN
ConstructionSOLID
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
5330-00-310-8819115045 INTERCHANGEABLE
Gasket
Curtiss-Wright Controls, Inc. Div Actuation Division
2825-00-337-1094D15-508BPC129 INTERCHANGEABLE
Piston Valve
Northrop Grumman Systems Corporation Div Marine Systems
5950-00-410-77808819 INTERCHANGEABLE
Transformer Assembly
Brunson Instrument Company Dba Brunson Instrument Co
9390-00-423-6431231609N INTERCHANGEABLE
Bellows,protection
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5950-00-539-6778722828-001 INTERCHANGEABLE
Transformer,power
Raytheon Company Dba Raytheon
2990-00-761-8957T-3979 INTERCHANGEABLE
Muffler,exhaust
Cummins Filtration Inc.
5310-00-769-6464124J INTERCHANGEABLE
Nut,plain,slotted,hexagon
Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products
1560-01-148-201023-1609 INTERCHANGEABLE
Seal,tail Fairing
The Boeing Company Div Defense
5330-01-213-90198819 INTERCHANGEABLE
Seal,carrier
Continental Emsco Co Skagit Products Div
Cross-Reference Index
Part NumberManufacturer
70504R2 Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
63450HX Hyster-Yale Group, Inc. (USA)
231609 Brockway Motor Trucks Div of Mack Trucks Inc (USA)
63450H Hyster-Yale Group, Inc. (USA)
8819 Eaton Corp Transmission Div (USA)
A980 Elgin Sweeper Company (USA)
Related Parts
5330-00-310-8819INTERCHANGEABLE
GASKET
115045
2825-00-337-1094INTERCHANGEABLE
PISTON VALVE
D15-508BPC129
5950-00-410-7780INTERCHANGEABLE
TRANSFORMER ASSEMBLY
8819
9390-00-423-6431INTERCHANGEABLE
BELLOWS,PROTECTION
231609N
5950-00-539-6778INTERCHANGEABLE
TRANSFORMER,POWER
722828-001
2990-00-761-8957INTERCHANGEABLE
MUFFLER,EXHAUST
T-3979
5310-00-769-6464INTERCHANGEABLE
NUT,PLAIN,SLOTTED,HEXAGON
124J
1560-01-148-2010INTERCHANGEABLE
SEAL,TAIL FAIRING
23-1609
5330-01-213-9019INTERCHANGEABLE
SEAL,CARRIER
8819

Frequently Asked Questions

What is NSN 3020-00-311-7043?

NSN 3020-00-311-7043 is a Gear Cluster, manufactured by Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-311-7043?

NSN 3020-00-311-7043 has 6 cross-referenced part numbers: 70504R2 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 63450HX (Hyster-Yale Group, Inc.), 231609 (Brockway Motor Trucks Div of Mack Trucks Inc), 63450H (Hyster-Yale Group, Inc.), 8819 (Eaton Corp Transmission Div) and 1 more.

What NSN replaces 3020-00-311-7043?

There are 9 known substitutes for 3020-00-311-7043: 5330-00-310-8819, 2825-00-337-1094, 5950-00-410-7780 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 70504R2?

Key specifications for 70504R2: Nominal Overall Length: 1.719 INCHES IN; Bore Nominal Diameter: 1.753 INCHES BOTH ENDS IN; Hub Nominal Diameter: 3.000 INCHES BETWEEN FIRST AND SECOND GEAR IN; Nominal Outside Diameter: 3.5000 INCHES SECOND GEAR IN. 14 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-311-7043 still in active supply?

NSN 3020-00-311-7043 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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