The Gear,bevel, cataloged under National Stock Number 3020-01-321-8407, 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 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-321-8407 |
| Primary Part Number | 5544219 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.780 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.000 INCHES SECOND END IN |
| Teeth Quantity | 20 |
| Surface Treatment Document and Classification | MIL-STD-171,FINISH NO. 5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Pitch Angle | 19.7150 DEGREES |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.120 INCHES SECOND END IN |
| Teeth Type | STRAIGHT |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 0.620 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDING |
| Material Document and Classification | AMS5659 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5862 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.3333 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN SECOND END |
| Spline Quantity | 23 BOTH ENDS |
| Nominal Outside Diameter | 1.472 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP XM-12 OVERALL |
| Spline Pitch Diameter | 0.7188 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.500 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 |
NSN 3020-01-321-8407 is a Gear,bevel, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-321-8407 has 2 manufacturer part numbers on file: 5544219 (Naval Sea Systems Command), 5544219 (General Dynamics-Ots, Inc. Div Ordnance and Tactical Systems).
Key specifications for 5544219: Bore Nominal Diameter: 0.780 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.000 INCHES SECOND END IN; Teeth Quantity: 20; Surface Treatment Document and Classification: MIL-STD-171,FINISH NO. 5.4.1 MIL STD SINGLE TREATMENT RESPONSE OVERALL. 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.