The Gear Set,helical,matched, cataloged under National Stock Number 3020-00-987-9920, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-987-9920 |
| Item Name | Gear Set,helical,matched |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Component Quantity | 2 |
| Nonsupply Items and Quantities | 16712 W416BBS-3X1 PINION,HELICAL 1;16712 W429BBSX8 GEAR,HELICAL 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| W429BBS8ANDW416BBS3-1 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| W429BBS8ANDW416BBS3-1 | 5/9 Secondary reference Siemens Energy, Inc. |
| W416BBS3-1 | 5/9 Secondary reference Siemens Energy, Inc. |
| W416BBS3-1 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| W429BB58 AND W416BBS3-1 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| W429BBSX8XW416B | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy, Inc. |
| W416BBS-3X1 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| W429BBSX8 AND W416BBS-3X1 | 3/9 Design control — primary reference Imo Industries Inc Delroyd Worm Gear Div |
| W429BB58 AND W416BBS3-1 | 5/9 Secondary reference Siemens Energy, Inc. |
| W429BBSX8 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| G9712PC124-126 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| W4219BBS8 | 5/9 Secondary reference Siemens Energy, Inc. |
| G9712PC124-126 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 3020-00-987-9920 is a Gear Set,helical,matched, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-987-9920: Component Quantity: 2; Nonsupply Items and Quantities: 16712 W416BBS-3X1 PINION,HELICAL 1;16712 W429BBSX8 GEAR,HELICAL 1. 2 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.