The Gear,spur, cataloged under National Stock Number 3020-01-127-6803, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-127-6803 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.150 INCHES BOTH ENDS IN |
| Teeth Quantity | 30 |
| Body Style | WEBBED, OFFSET, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.922 INCHES FIRST END IN |
| First Step Nominal Length | 0.125 INCHES FIRST END IN |
| Hardness Rating | 58.0 ROCKWELL C NOMINAL OVERALL |
| Style Designator | PROTRUDING HUB, RECESSED BODY |
| Material Document and Classification | 66AISI/SAE8620H FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 3.250 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Spline Quantity | 24 BOTH ENDS |
| End Nominal Length | 0.797 INCHES FIRST END IN |
| Nominal Outside Diameter | 5.333 INCHES IN |
| End Nominal Diameter | 2.756 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8620H OVERALL |
| Spline Pitch Diameter | 2.0000 INCHES NOMINAL BOTH ENDS IN |
| Body Recess Nominal Depth | 0.224 INCHES SECOND END IN |
| Face Nominal Width | 1.812 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 |
|---|---|
| 8358575 | 3/9 Design control — primary reference General Motors Corp Electro-Motive Div |
NSN 3020-01-127-6803 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-127-6803: Bore Nominal Diameter: 2.150 INCHES BOTH ENDS IN; Teeth Quantity: 30; Body Style: WEBBED, OFFSET, SOLID; Bore Style: INVOLUTE SPLINE BOTH ENDS. 22 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.