The Gear,helical, cataloged under National Stock Number 3020-00-233-7939, 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 Triumph Engine Control Systems Llc. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-233-7939 |
| Primary Part Number | 69D115 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.5000 INCHES BOTH ENDS IN |
| Helix Angle | 60.0000 DEGREES |
| Hub Nominal Diameter | 1.000 INCHES FIRST END IN |
| Teeth Quantity | 17 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.375 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.172 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 1.2500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 1.3750 INCHES IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.625 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 |
|---|---|
| 69D115 | Triumph Engine Control Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 269801C1 | 3/2 Design control — primary reference U.S. Government activity |
| 269801C1 | 5/9 Secondary reference U.S. Government activity |
| 269801C1 | 5/9 Secondary reference Navistar International Corporation Dba Navistar |
NSN 3020-00-233-7939 is a Gear,helical, manufactured by Triumph Engine Control Systems Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-233-7939 has 1 manufacturer part number on file: 69D115 (Triumph Engine Control Systems Llc).
Key specifications for 69D115: Bore Nominal Diameter: 0.5000 INCHES BOTH ENDS IN; Helix Angle: 60.0000 DEGREES; Hub Nominal Diameter: 1.000 INCHES FIRST END IN; Teeth Quantity: 17. 20 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.