The Gear Set,worm and Worm Wheel,mat, cataloged under National Stock Number 3020-01-421-1641, 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 Naval Sea Systems Command. Government technical data includes 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-421-1641 |
| Primary Part Number | 6960891 PC 8 AND 9 |
| Item Name | Gear Set,worm and Worm Wheel,mat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Component Quantity | 2 |
| Nonsupply Items and Quantities | WORM 1 AND WORM WHEEL 1 |
| 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 |
|---|---|
| 6960891 PC 8 AND 9 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6960891 | D/9 Drawing number reference only Naval Sea Systems Command |
| 593-6960891 PC | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 50-200-15 AND 50-300-15 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-421-1641 is a Gear Set,worm and Worm Wheel,mat, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-421-1641 has 1 manufacturer part number on file: 6960891 PC 8 AND 9 (Naval Sea Systems Command).
Key specifications for 6960891 PC 8 AND 9: Component Quantity: 2; Nonsupply Items and Quantities: WORM 1 AND WORM WHEEL 1; Special Features: WORM 4150 STEEL, 2 THREADS, RIGHT HAND HELIX, LEAD ANGLE 13 DEG 32 MIN, CONCAVE FACE, OA LG 15.792 IN., WORM WHEEL, CAST BRONZE, 30 TEETH, RIGHT HAND HELIX, OD 8.560 IN., OA LG 4.250 IN., CONCAVE FACE, BORE 3.126 IN. DIA WITH 2 KEYWAYS 180 DEG APART MAX DIA 3.610 IN., USED IN SOLID WASTE SHREDDER RIGHT ANGLE SPEED REDUCER ASSEMBLY, WEAPONS SYSTEM NIMITZ CLASS CVN IN. 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.