The Gear Cluster, cataloged under National Stock Number 3020-00-545-3488, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Guptill Gear Corp. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-545-3488 |
| Primary Part Number | 625603 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Guptill Gear Corp |
| Status | ACTIVE |
| Construction | SOLID |
| Nominal Outside Diameter | 0.2830 INCHES FIRST GEAR IN |
| Material | STEEL COMP 303S OR STEEL COMP 303SE SHAFT/HUB |
| Hub Style Designator | SPLIT FIRST END |
| Hub Nominal Length | 0.045 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Hub Nominal Diameter | 0.176 INCHES FIRST END IN |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Surface Treatment | PASSIVATE OVERALL |
| Nominal Overall Length | 0.400 INCHES IN |
| Hub Nominal Length | 0.1920 INCHES FIRST END IN |
| Material Document and Classification | MIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE SHAFT/HUB |
| Attachment Method | CLAMP |
| Hub Nominal Diameter | 0.200 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | SPUR FIRST GEAR |
| Bore Nominal Diameter | 0.120 INCHES BOTH ENDS IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 1.1000 INCHES SECOND GEAR IN |
| Design Type | SPUR SECOND GEAR |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 3020-00-545-3488 is a Gear Cluster, manufactured by Guptill Gear Corp, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-00-545-3488 has 2 cross-referenced part numbers: 625603 (Guptill Gear Corp), 625603 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
There is 1 known substitute for 3020-00-545-3488: 5999-01-512-6028. Verify interchangeability with system specifications before substitution.
Key specifications for 625603: Construction: SOLID; Nominal Outside Diameter: 0.2830 INCHES FIRST GEAR IN; Material: STEEL COMP 303S OR STEEL COMP 303SE SHAFT/HUB; Hub Style Designator: SPLIT FIRST END. 18 total characteristics are documented in the Federal Logistics Information System.