The Gear,helical, cataloged under National Stock Number 3020-00-517-2829, 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 Ambac International Corporation Div Ambac International. Government technical data includes 17 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 | 3020-00-517-2829 |
| Primary Part Number | 52245-2 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ambac International Corporation Div Ambac International |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.3750 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.938 INCHES FIRST END IN |
| Teeth Quantity | 140 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 1.5000 INCHES SECOND END IN |
| Tooth Direction | LEFT |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 0.286 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 3.0430 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 3.0850 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 40 AXIALLY THROUGH HUB FIRST END |
| Pressure Angle | 14.5000 DEGREES |
| Bolt Hole Circle Nominal Diameter | 1.687 INCHES AXIALLY THROUGH HUB FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.125 INCHES IN |
| 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 |
|---|---|
| 52245-2 PRIMARY | Ambac International Corporation Div Ambac International (USA) |
NSN 3020-00-517-2829 is a Gear,helical, manufactured by Ambac International Corporation Div Ambac International, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-517-2829 has 1 manufacturer part number on file: 52245-2 (Ambac International Corporation Div Ambac International).
Key specifications for 52245-2: Bore Nominal Diameter: 1.3750 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.938 INCHES FIRST END IN; Teeth Quantity: 140; Body Style: PLAIN, SOLID. 17 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.