The Gear,spur, cataloged under National Stock Number 3020-00-540-5847, 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 15 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-540-5847 |
| Primary Part Number | 492850-305 |
| 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 | 0.188 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.375 INCHES FIRST END IN |
| Teeth Quantity | 84 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 1.7500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PINNED FIRST END |
| Nominal Outside Diameter | 1.792 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | ALUMINUM ALLOY OVERALL |
| Face Nominal Width | 0.125 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 |
|---|---|
| 492850-305 PRIMARY | L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc. (USA) |
| 155-84 | Southern Gear & Machine Inc (USA) |
| Reference | Meaning |
|---|---|
| G2-84Q10 | C/1 Advisory reference — outside the item-of-supply concept Roller Bearing Co of America, Inc Div Pic Design |
| G2-84 | C/1 Advisory reference — outside the item-of-supply concept Roller Bearing Co of America, Inc Div Pic Design |
| 530040-2084 | 5/2 Secondary reference U.S. Government activity |
| E21A84 | C/1 Advisory reference — outside the item-of-supply concept Designatronics Incorporated Div Sterling Instruments Div |
| PG4426-84 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 155-84 | 5/9 Secondary reference Profile Gear Corp |
NSN 3020-00-540-5847 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 3020-00-540-5847 has 2 manufacturer part numbers on file: 492850-305 (L3harris Maritime Power & Energy Solutions, Inc. Dba Spd Electrical Systems, Inc.), 155-84 (Southern Gear & Machine Inc).
3 possible matches (shared part number, not a government interchangeability claim): 3020-00-711-6052, 5998-01-210-5151, 5330-01-377-7354. Verify interchangeability with system specifications before substitution.
Key specifications for 492850-305: Bore Nominal Diameter: 0.188 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.375 INCHES FIRST END IN; Teeth Quantity: 84; Body Style: PLAIN, SOLID. 15 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.