The Gear,spur, cataloged under National Stock Number 3020-00-049-8535, 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 L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-049-8535 |
| Primary Part Number | 487811REVA |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. |
| Status | ACTIVE |
| Bore Nominal Diameter | 4.4373 INCHES FIRST END IN |
| Hub Nominal Diameter | 5.7500 INCHES FIRST END IN |
| Teeth Quantity | 192 |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 8 PLAIN AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.500 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 5 |
| Mounting Hole Nominal Diameter | 0.201 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Hardness Rating | 56.0 ROCKWELL B NOMINAL OVERALL |
| Material Document and Classification | QQ-A-250/11,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 6.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 6.0625 INCHES IN |
| Surface Treatment | CHROMATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Bolt Hole Circle Nominal Diameter | 4.937 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 0.6250 INCHES FIRST END IN |
| 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 |
|---|---|
| 487811A | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA) |
| 487811REVA PRIMARY | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 487811-1 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-049-8535 is a Gear,spur, manufactured by L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-049-8535 has 2 manufacturer part numbers on file: 487811A (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.), 487811REVA (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.).
Key specifications for 487811REVA: Bore Nominal Diameter: 4.4373 INCHES FIRST END IN; Hub Nominal Diameter: 5.7500 INCHES FIRST END IN; Teeth Quantity: 192; Body Style: WEBBED, OFFSET, SOLID. 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.
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.