The Gear,bevel, cataloged under National Stock Number 3020-01-351-4041, 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 Naval Sea Systems Command. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-351-4041 |
| Primary Part Number | 583-6743676 PC3 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.750 INCHES FIRST END IN |
| Teeth Quantity | 41 |
| Body Style | PLAIN, SOLID |
| Pitch Angle | 49.5100 DEGREES |
| Bore Style | PARTIAL FIRST END |
| Mounting Hole Type and Quantity | 1 THREADED TRANSVERSELY THROUGH HUB SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 2.303 INCHES SECOND END IN |
| First Step Nominal Length | 1.358 INCHES SECOND END IN |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 2.963 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDING |
| Bore Nominal Depth | 1.500 INCHES FIRST END IN |
| Material Document and Classification | AISI4340 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.1000 INCHES NOMINAL IN |
| First Step Nominal Diameter | 1.498 INCHES SECOND END IN |
| Hub Style Designator | 1 STEP SECOND END |
| Mounting Hole Nominal Thread Size | 0.145 INCHES TRANSVERSELY THROUGH HUB SECOND END IN |
| End Nominal Length | 0.925 INCHES SECOND END IN |
| Nominal Outside Diameter | 4.000 INCHES IN |
| End Nominal Diameter | 0.759 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4340 OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB SECOND END |
| Attachment Method | MOUNTING HOLE AND SLOT |
| Face Nominal Width | 0.528 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 |
|---|---|
| 583-6743676 PC3 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6743676 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-351-4041 is a Gear,bevel, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-351-4041 has 1 manufacturer part number on file: 583-6743676 PC3 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-352-0059. Verify interchangeability with system specifications before substitution.
Key specifications for 583-6743676 PC3: Bore Nominal Diameter: 0.750 INCHES FIRST END IN; Teeth Quantity: 41; Body Style: PLAIN, SOLID; Pitch Angle: 49.5100 DEGREES. 25 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.