The Gear Sector,worm Wheel, cataloged under National Stock Number 3020-01-006-0898, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-006-0898 |
| Primary Part Number | 3021721-2 |
| Item Name | Gear Sector,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.625 INCHES BOTH ENDS IN |
| Helix Angle | 4.7610 DEGREES |
| Teeth Quantity | 50 |
| Surface Treatment Document and Classification | MIL-=P-16232D,TY C,CL 4E MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Nominal Outside Radius | 2.164 INCHES IN |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Throat Nominal Radius | 0.065 INCHES IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | PHOSPHATE OVERALL |
| Pitch Radius | 2.0834 INCHES NOMINAL IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 1070 OVERALL |
| Mating Thread Lead Quantity | 1 |
| 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 |
|---|---|
| 3021721-2 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 3021721 | D/9 Drawing number reference only Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 3020-01-006-0898 is a Gear Sector,worm Wheel, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-006-0898 has 1 manufacturer part number on file: 3021721-2 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-008-7436. Verify interchangeability with system specifications before substitution.
Key specifications for 3021721-2: Bore Nominal Diameter: 0.625 INCHES BOTH ENDS IN; Helix Angle: 4.7610 DEGREES; Teeth Quantity: 50; Surface Treatment Document and Classification: MIL-=P-16232D,TY C,CL 4E MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 16 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.