The Gear,helical, cataloged under National Stock Number 3020-00-221-8778, 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 Danfoss Inc. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-221-8778 |
| Primary Part Number | 20202-1 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Danfoss Inc |
| Status | ACTIVE |
| Keyway Nominal Width | 0.127 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.751 INCHES BOTH ENDS IN |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Nominal Outside Diameter | 1.9773 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.442 INCHES BOTH ENDS IN |
| Face Nominal Width | 0.801 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 |
|---|---|
| 20202-1 PRIMARY | Danfoss Inc (USA) |
| Reference | Meaning |
|---|---|
| 20202-1 | 3/9 Design control — primary reference Danfoss Fluid Power Inc Racine Opn |
NSN 3020-00-221-8778 is a Gear,helical, manufactured by Danfoss Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-221-8778 has 1 manufacturer part number on file: 20202-1 (Danfoss Inc).
5 possible matches (shared part number, not a government interchangeability claim): 3110-00-293-9350, 5950-00-434-2889, 5945-00-545-9827. Verify interchangeability with system specifications before substitution.
Key specifications for 20202-1: Keyway Nominal Width: 0.127 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.751 INCHES BOTH ENDS IN; Body Style: PLAIN, SOLID; Bore Style: W/ KEYWAY BOTH ENDS. 9 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.