The Gear,spur, cataloged under National Stock Number 3020-00-563-6676, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-563-6676 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 1.750 INCHES BOTH ENDS IN |
| Teeth Quantity | 35 |
| Second Step Nominal Diameter | 3.160 INCHES BOTH ENDS IN |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 1.120 INCHES BOTH ENDS IN |
| First Step Nominal Length | 0.490 INCHES BOTH ENDS IN |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL |
| Second Step Nominal Length | 0.600 INCHES BOTH ENDS IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 2.500 INCHES BOTH ENDS IN |
| Hub Style Designator | 2 STEPS BOTH ENDS |
| Spline Quantity | 13 BOTH ENDS |
| End Nominal Length | 0.630 INCHES BOTH ENDS IN |
| Nominal Outside Diameter | 5.285 INCHES IN |
| End Nominal Diameter | 2.166 INCHES BOTH ENDS IN |
| Pressure Angle | 20.5000 DEGREES |
| Material | STEEL COMP 8620 OVERALL |
| Spline Pitch Diameter | 1.6250 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.250 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 |
|---|---|
| 4028053 | 5/9 Secondary reference U.S. Government activity |
| YZ280317 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-563-6676 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-563-6676: Bore Nominal Diameter: 1.750 INCHES BOTH ENDS IN; Teeth Quantity: 35; Second Step Nominal Diameter: 3.160 INCHES BOTH ENDS IN; Body Style: PLAIN, SOLID. 23 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.