The Gear Cluster, cataloged under National Stock Number 3020-00-945-2334, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Breeze-Eastern Llc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-945-2334 |
| Primary Part Number | BL-5533 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Breeze-Eastern Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.252 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.375 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.250 INCHES SECOND END IN |
| Hub Nominal Diameter | 0.406 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | PLAIN BOTH ENDS |
| Hardness Rating | 52.0 ROCKWELL C MINIMUM AND 56.0 ROCKWELL C MAXIMUM TEETH |
| Nominal Overall Length | 2.700 INCHES IN |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Style Designator | 1 STEP BOTH ENDS |
| Hub Nominal Length | 0.328 INCHES FIRST END IN |
| Hub Nominal Length | 0.465 INCHES SECOND END IN |
| Hub Nominal Length | 1.046 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 0.969 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 1.311 INCHES FIRST GEAR IN |
| Material | STEEL COMP E4340 OVERALL |
| Construction | SOLID |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| BL-5533 PRIMARY | Breeze-Eastern Llc (USA) |
NSN 3020-00-945-2334 is a Gear Cluster, manufactured by Breeze-Eastern Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-945-2334 has 1 manufacturer part number on file: BL-5533 (Breeze-Eastern Llc).
Key specifications for BL-5533: Bore Nominal Diameter: 0.252 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.375 INCHES FIRST END IN; Hub Nominal Diameter: 0.250 INCHES SECOND END IN; Hub Nominal Diameter: 0.406 INCHES BETWEEN FIRST AND SECOND GEAR IN. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.