The Gear Cluster, cataloged under National Stock Number 3020-00-914-5237, 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 Crane Electronics, Inc.. Government technical data includes 21 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. 3 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 | 3020-00-914-5237 |
| Primary Part Number | 100519 |
| Item Name | Gear Cluster |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Crane Electronics, Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.125 INCHES SECOND END IN |
| Surface Treatment Document and Classification | MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR |
| Counterbore Nominal Diameter | 0.3120 INCHES SECOND END IN |
| Design Type | SPUR SECOND GEAR |
| Design Type | SPUR FIRST GEAR |
| Bore Style | W/COUNTERBORE SECOND END |
| Precision Classification | QUALITY NUMBER 9 ALL GEARS |
| Nominal Overall Length | 0.206 INCHES IN |
| Material Document and Classification | QQ-A-250/4,T3 FED SPEC SINGLE MATERIAL RESPONSE FIRST GEAR |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE SECOND GEAR |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE SHAFT/HUB |
| Nominal Outside Diameter | 0.4368 INCHES SECOND GEAR IN |
| Nominal Outside Diameter | 0.5167 INCHES FIRST GEAR IN |
| Surface Treatment | PASSIVATE SECOND GEAR |
| Surface Treatment | PASSIVATE SHAFT/HUB |
| Surface Treatment | ANODIZE FIRST GEAR |
| Material | STEEL COMP 303 SHAFT/HUB |
| Material | STEEL COMP 303 SECOND GEAR |
| Material | ALUMINUM ALLOY 2024 FIRST GEAR |
| Counterbore Nominal Depth | 0.063 INCHES SECOND END IN |
| Construction | ASSEMBLED |
| 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 |
|---|---|
| 100519 PRIMARY | Crane Electronics, Inc. (USA) |
NSN 3020-00-914-5237 is a Gear Cluster, manufactured by Crane Electronics, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-914-5237 has 1 manufacturer part number on file: 100519 (Crane Electronics, Inc.).
3 possible matches (shared part number, not a government interchangeability claim): 1680-00-997-0407, 6730-01-065-3424, 4820-01-125-9338. Verify interchangeability with system specifications before substitution.
Key specifications for 100519: Bore Nominal Diameter: 0.125 INCHES SECOND END IN; Surface Treatment Document and Classification: MIL-A-8625 MIL SPEC SINGLE TREATMENT RESPONSE FIRST GEAR; Counterbore Nominal Diameter: 0.3120 INCHES SECOND END IN; Design Type: SPUR SECOND GEAR. 21 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.