The Gear,spur, cataloged under National Stock Number 3020-01-487-8186, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-487-8186 |
| Primary Part Number | 124-7121005 PC 23 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Teeth Quantity | 24 |
| Body Style | PLAIN, SOLID |
| Style Designator | HUBLESS |
| Material Document and Classification | ASTM B 505, ALLOY 863 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.0000 INCHES NOMINAL IN |
| Nominal Outside Diameter | 3.200 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | BRONZE OVERALL |
| Face Nominal Width | 1.000 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 |
|---|---|
| 124-7121005 PC 23 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 124-7121005 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-487-8186 is a Gear,spur, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-487-8186 has 1 manufacturer part number on file: 124-7121005 PC 23 (Naval Sea Systems Command).
Key specifications for 124-7121005 PC 23: Teeth Quantity: 24; Body Style: PLAIN, SOLID; Style Designator: HUBLESS; Material Document and Classification: ASTM B 505, ALLOY 863 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 9 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.