The Gear,spur, cataloged under National Stock Number 3020-01-351-4046, 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17 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-351-4046 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 3.237 INCHES BOTH ENDS IN |
| Teeth Quantity | 58 |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BORE SURFACE |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | HUBLESS |
| Material Document and Classification | AMS5659 ASSN STD SINGLE MATERIAL RESPONSE BORE SURFACE |
| Pitch Diameter | 3.6250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 50 BOTH ENDS |
| Nominal Outside Diameter | 3.688 INCHES IN |
| Surface Treatment | PASSIVATE BORE SURFACE |
| Pressure Angle | 30.0000 DEGREES |
| Material | STEEL COMP XM-12 OVERALL |
| Spline Pitch Diameter | 3.1250 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.750 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 |
|---|---|
| 748688 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-351-4046 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-351-4046: Bore Nominal Diameter: 3.237 INCHES BOTH ENDS IN; Teeth Quantity: 58; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BORE SURFACE; Body Style: PLAIN, SOLID. 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.