The Gear,spur, cataloged under National Stock Number 3020-01-331-1781, 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 12 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-331-1781 |
| Primary Part Number | 5821037 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.1250 INCHES FIRST END IN |
| Teeth Quantity | 15 |
| Bore Style | PLAIN FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.2300 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | MIL-S-6758,COND E OF F MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Tooth Form | STUB |
| Nominal Outside Diameter | 0.3628 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4130 OVERALL |
| Attachment Method | SLOT |
| Face Nominal Width | 0.1500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5821037 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3020-01-331-1781 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-331-1781 has 1 manufacturer part number on file: 5821037 (Naval Sea Systems Command).
Key specifications for 5821037: Bore Nominal Diameter: 0.1250 INCHES FIRST END IN; Teeth Quantity: 15; Bore Style: PLAIN FIRST END; Nominal Distance Between Body Face and Protruding Hub End: 0.2300 INCHES FIRST END IN. 12 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 3020-01-331-1781 has DEMIL Code B. 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.