The Gear,helical, cataloged under National Stock Number 3020-00-478-2869, 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 Pakon Inc Dba Impak Division. Government technical data includes 26 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 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 | 3020-00-478-2869 |
| Primary Part Number | 501-714 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Pakon Inc Dba Impak Division |
| Status | ACTIVE |
| Keyway Nominal Width | 0.0470 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.3150 INCHES BOTH ENDS IN |
| Helix Angle | 45.0000 DEGREES |
| Hub Nominal Diameter | 0.875 INCHES FIRST END IN |
| Hub Nominal Diameter | 0.875 INCHES SECOND END IN |
| Teeth Quantity | 25 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Mounting Hole Type and Quantity | 1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.0310 INCHES SECOND END IN |
| Teeth Type | SINGLE HELIX |
| Nominal Overall Length | 0.725 INCHES IN |
| Style Designator | PROTRUDING HUBS |
| Pitch Diameter | 1.1250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Mounting Hole Nominal Thread Size | 0.190 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 1.3120 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 32 TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance From Bore Center to Keyway Bottom | 0.2050 INCHES BOTH ENDS IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | FIBER OVERALL |
| Mounting Hole Thread Series Designator | UNF AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.375 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 |
|---|---|
| 501-714 PRIMARY | Pakon Inc Dba Impak Division (USA) |
NSN 3020-00-478-2869 is a Gear,helical, manufactured by Pakon Inc Dba Impak Division, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-478-2869 has 1 manufacturer part number on file: 501-714 (Pakon Inc Dba Impak Division).
3 possible matches (shared part number, not a government interchangeability claim): 7025-01-619-6902, 7025-01-621-4702, 7025-01-621-4706. Verify interchangeability with system specifications before substitution.
Key specifications for 501-714: Keyway Nominal Width: 0.0470 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.3150 INCHES BOTH ENDS IN; Helix Angle: 45.0000 DEGREES; Hub Nominal Diameter: 0.875 INCHES FIRST END IN. 26 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.