The Gear,spur, cataloged under National Stock Number 3020-01-208-2778, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-208-2778 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.500 INCHES BOTH ENDS IN |
| Teeth Quantity | 34 |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | WEBBED, WITH LIGHTENING HOLES |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.365 INCHES BOTH ENDS IN |
| First Step Nominal Length | 0.840 INCHES BOTH ENDS IN |
| Hardness Rating | 90.0 ROCKWELL SUPERFICIAL 15-N NOMINAL BODY |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS-6265 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.6154 INCHES NOMINAL IN |
| First Step Nominal Diameter | 0.750 INCHES BOTH ENDS IN |
| Hub Style Designator | 1 STEP BOTH ENDS |
| End Nominal Length | 0.280 INCHES BOTH ENDS IN |
| Nominal Outside Diameter | 2.766 INCHES IN |
| Surface Treatment | OXIDE OVERALL |
| End Nominal Diameter | 0.669 INCHES BOTH ENDS IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Face Nominal Width | 0.670 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 |
|---|---|
| NF203045-1 | 3/9 Design control — primary reference Speco Corp |
NSN 3020-01-208-2778 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-208-2778: Bore Nominal Diameter: 0.500 INCHES BOTH ENDS IN; Teeth Quantity: 34; Surface Treatment Document and Classification: MIL-C-13924,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Style: WEBBED, WITH LIGHTENING HOLES. 20 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.