The Gear Sector,spur, cataloged under National Stock Number 3020-01-370-3159, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-370-3159 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.4942 INCHES BOTH ENDS IN |
| Teeth Quantity | 2 |
| Surface Treatment Document and Classification | AMS-2419-5 ASSN STD SINGLE TREATMENT RESPONSE BODY |
| Nominal Outside Radius | 1.91665 INCHES IN |
| Bore Style | PLAIN BOTH ENDS |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | HUBLESS |
| Bore Nominal Depth | 0.100 INCHES BOTH ENDS IN |
| Material Document and Classification | AMS-6265 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Arc Nominal Length | 0.0560 INCHES IN |
| Surface Treatment | CADMIUM BODY |
| Pitch Radius | 1.9465 INCHES NOMINAL IN |
| Pressure Angle | 30.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Face Nominal Width | 0.093 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 |
| Reference | Meaning |
|---|---|
| 756079 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-370-3159 is a Gear Sector,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-370-3159: Bore Nominal Diameter: 0.4942 INCHES BOTH ENDS IN; Teeth Quantity: 2; Surface Treatment Document and Classification: AMS-2419-5 ASSN STD SINGLE TREATMENT RESPONSE BODY; Nominal Outside Radius: 1.91665 INCHES IN. 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.