The Gear Cluster, cataloged under National Stock Number 3020-00-646-7040, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Dana Corp Spicer Transmission Div. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3020-00-646-7040 |
| Primary Part Number | 18-8-23 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Dana Corp Spicer Transmission Div |
| Status | CANCELLED |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Nominal Outside Diameter | 3.938 INCHES FIRST GEAR IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Design Type | SPUR SECOND GEAR |
| Nominal Overall Length | 1.988 INCHES IN |
| Bore Nominal Diameter | 1.562 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.750 INCHES FIRST END IN |
| Construction | SOLID |
| Hub Nominal Length | 0.125 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | HELICAL FIRST GEAR |
| Hub Nominal Length | 0.739 INCHES FIRST END IN |
| Hub Nominal Diameter | 2.062 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Spline Quantity | 6 BOTH ENDS |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 2.406 INCHES SECOND GEAR IN |
| Material | STEEL COMP 8620 OVERALL |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 18-8-23 | Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA) |
| 18-8-23 PRIMARY | Dana Corp Spicer Transmission Div (USA) |
| 867862R1 | Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA) |
| 809297 | Am General Llc (USA) |
| 867862R1 | Navistar Intl Corp Truck Br Ohio Plant (USA) |
| TC297 | Liberty Ventures Inti, Llc (USA) |
NSN 3020-00-646-7040 is a Gear Cluster, manufactured by Dana Corp Spicer Transmission Div, classified under FSC 3020 (No Item Name Available). Status: cancelled.
NSN 3020-00-646-7040 has 6 cross-referenced part numbers: 18-8-23 (Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products), 18-8-23 (Dana Corp Spicer Transmission Div), 867862R1 (Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/), 809297 (Am General Llc), 867862R1 (Navistar Intl Corp Truck Br Ohio Plant) and 1 more.
There are 4 known substitutes for 3020-00-646-7040: 5330-00-136-2005, 5330-00-410-0662, 1270-00-547-3217 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 18-8-23: Hub Style Designator: PLAIN BETWEEN FIRST AND SECOND GEAR; Nominal Outside Diameter: 3.938 INCHES FIRST GEAR IN; Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Design Type: SPUR SECOND GEAR. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 3020-00-646-7040 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.