The Gear,worm, cataloged under National Stock Number 3020-01-090-3428, 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 Eastman Kodak Co. Government technical data includes 12 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 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 | 3020-01-090-3428 |
| Primary Part Number | 502251 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Eastman Kodak Co |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.188 INCHES BOTH ENDS IN |
| Helix Angle | 3.5833 DEGREES |
| Hub Nominal Diameter | 0.437 INCHES FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Nominal Overall Length | 0.406 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 0.6262 INCHES NOMINAL IN |
| Nominal Outside Diameter | 0.667 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Face Nominal Width | 0.156 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 |
|---|---|
| 502251 PRIMARY | Eastman Kodak Co (USA) |
NSN 3020-01-090-3428 is a Gear,worm, manufactured by Eastman Kodak Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-090-3428 has 1 manufacturer part number on file: 502251 (Eastman Kodak Co).
1 possible match (shared part number, not a government interchangeability claim): 5365-01-669-9649. Verify interchangeability with system specifications before substitution.
Key specifications for 502251: Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Helix Angle: 3.5833 DEGREES; Hub Nominal Diameter: 0.437 INCHES FIRST END IN; Bore Style: PLAIN BOTH ENDS. 12 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.