The Gear Cluster, cataloged under National Stock Number 3020-00-797-6282, 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 Acco-Babcock Inc Hoist and Crane Div. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-797-6282 |
| Primary Part Number | 437811-6 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Acco-Babcock Inc Hoist and Crane Div |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.688 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.000 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | PLAIN BOTH ENDS |
| Hardness Rating | 262.0 BRINELL STANDARD MINIMUM AND 293.0 BRINELL STANDARD MAXIMUM OVERALL |
| Nominal Overall Length | 1.624 INCHES IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Hub Style Designator | PLAIN BETWEEN FIRST AND SECOND GEAR |
| Hub Nominal Length | 0.219 INCHES BETWEEN FIRST AND SECOND GEAR IN |
| Nominal Outside Diameter | 1.392 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 5.470 INCHES FIRST GEAR IN |
| Material | STEEL COMP 4140 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 |
|---|---|
| 437811-6 PRIMARY | Acco-Babcock Inc Hoist and Crane Div (USA) |
| 437811-6 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 437811-6 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 437811 | D/9 Drawing number reference only Acco-Babcock Inc Hoist and Crane Div |
NSN 3020-00-797-6282 is a Gear Cluster, manufactured by Acco-Babcock Inc Hoist and Crane Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-797-6282 has 3 manufacturer part numbers on file: 437811-6 (Acco-Babcock Inc Hoist and Crane Div), 437811-6 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 437811-6 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
2 possible matches (shared part number, not a government interchangeability claim): 4730-01-259-2409, 6680-01-560-6530. Verify interchangeability with system specifications before substitution.
Key specifications for 437811-6: Bore Nominal Diameter: 0.688 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.000 INCHES BETWEEN FIRST AND SECOND GEAR IN; Design Type: SPUR SECOND GEAR; Design Type: SPUR FIRST GEAR. 14 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.