The Gear,spur, cataloged under National Stock Number 3020-00-174-5580, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-174-5580 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.029 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 3.000 INCHES SECOND END IN |
| Hub Nominal Diameter | 3.625 INCHES FIRST END IN |
| Teeth Quantity | 48 |
| Body Style | WEBBED, SOLID |
| Bore Style | STRAIGHT SPLINE BOTH ENDS |
| Hardness Rating | 48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | FLUSH HUB |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 4140 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 6.8370 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 12 BOTH ENDS |
| Nominal Outside Diameter | 6.980 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4140 OVERALL |
| Face Nominal Width | 1.188 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 |
|---|---|
| 29W15 | 3/2 Design control — primary reference U.S. Government activity |
| 1WG221PC54 | 3/2 Design control — primary reference U.S. Government activity |
| 1WG216PC53 | 3/2 Design control — primary reference U.S. Government activity |
| 1WG183PC63 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-174-5580 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-174-5580: Bore Nominal Diameter: 2.029 INCHES BOTH ENDS IN; Hub Nominal Diameter: 3.000 INCHES SECOND END IN; Hub Nominal Diameter: 3.625 INCHES FIRST END IN; Teeth Quantity: 48. 17 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.