The Gear,spur, cataloged under National Stock Number 3020-01-180-0628, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-180-0628 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.559 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 3.540 INCHES SECOND END IN |
| Hub Nominal Diameter | 4.330 INCHES FIRST END IN |
| Teeth Quantity | 50 |
| Body Style | WEBBED, SOLID |
| Counterbore Nominal Diameter | 2.360 INCHES COUNTER BORE SECOND END IN |
| Bore Style | W/COUNTERBORE COUNTER BORE SECOND END |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.600 INCHES FIRST END IN |
| Style Designator | ONE PROTRUDING HUB, ONE FLUSH HUB |
| Material Document and Classification | 66AISI/SAE4140 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 9.4825 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 11 BOTH ENDS |
| Nominal Outside Diameter | 10.037 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4140 OVERALL |
| Counterbore Nominal Depth | 0.470 INCHES COUNTER BORE SECOND END IN |
| Spline Pitch Diameter | 2.1654 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.750 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| P208368N | C/1 Advisory reference — outside the item-of-supply concept Fairbanks Morse, Llc |
| P208368N | 3/9 Design control — primary reference U.S. Government activity |
NSN 3020-01-180-0628 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-180-0628: Bore Nominal Diameter: 2.559 INCHES BOTH ENDS IN; Hub Nominal Diameter: 3.540 INCHES SECOND END IN; Hub Nominal Diameter: 4.330 INCHES FIRST END IN; Teeth Quantity: 50. 21 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.
NSN 3020-01-180-0628 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.