The Gear,spur, cataloged under National Stock Number 3020-01-302-0479, 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 Electrol Mfg Co. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-302-0479 |
| Primary Part Number | 246152-2 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Electrol Mfg Co |
| Status | ACTIVE |
| Bore Nominal Diameter | 5.000 INCHES BOTH ENDS IN |
| Teeth Quantity | 144 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 5.625 INCHES FIRST END IN |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Mounting Hole Type and Quantity | 4 COUNTERSUNK AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.093 INCHES FIRST END IN |
| First Step Nominal Length | 0.030 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.128 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 6.0000 INCHES NOMINAL IN |
| First Step Nominal Diameter | 5.812 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| End Nominal Length | 0.063 INCHES FIRST END IN |
| Nominal Outside Diameter | 6.083 INCHES IN |
| End Nominal Diameter | 5.687 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | PLASTIC ACETAL OVERALL |
| Bolt Hole Circle Nominal Diameter | 5.375 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Counterbore Nominal Depth | 0.068 INCHES FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.100 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 246152-2 PRIMARY | Electrol Mfg Co (USA) |
| Reference | Meaning |
|---|---|
| 246152-2 | 5/9 Secondary reference Lockheed Martin Corp Electronics and Missiles Div |
| 246152 | D/9 Drawing number reference only Lockheed Martin Corp Electronics and Missiles Div |
NSN 3020-01-302-0479 is a Gear,spur, manufactured by Electrol Mfg Co, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-302-0479 has 1 manufacturer part number on file: 246152-2 (Electrol Mfg Co).
2 possible matches (shared part number, not a government interchangeability claim): 5998-01-345-1830, 5330-01-445-5454. Verify interchangeability with system specifications before substitution.
Key specifications for 246152-2: Bore Nominal Diameter: 5.000 INCHES BOTH ENDS IN; Teeth Quantity: 144; Body Style: PLAIN, SOLID; Counterbore Nominal Diameter: 5.625 INCHES FIRST END IN. 22 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.
NSN 3020-01-302-0479 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.