The Sprocket Wheel, cataloged under National Stock Number 3020-01-033-8778, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-033-8778 |
| Item Name | Sprocket Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Spline Minor Diameter | 0.849 INCHES NOMINAL IN |
| Hub Outside Diameter | 1.250 INCHES NOMINAL AA END IN |
| Securing Method | DRILLED HOLE |
| Design Form | PLAIN |
| Tooth Pitch | 0.375 INCHES NOMINAL IN |
| Asa Standard Chain Number | 35 |
| Outside Diameter | 1.870 INCHES NOMINAL IN |
| Spline Length | 2.577 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-S-634-CANCELED FED SPEC SINGLE MATERIAL RESPONSE |
| Pitch Diameter | 1.685 INCHES NOMINAL IN |
| Spline Major Diameter | 0.999 INCHES NOMINAL IN |
| Bore Type | STRAIGHT SPLINE |
| Counterbore Depth | 1.205 INCHES NOMINAL IN |
| Teeth Row Quantity | 1 |
| Teeth Quantity Per Row | 14 |
| Counterbore Location | AA END |
| Protruding Hub Characteristic | GROOVED |
| Hardness Rating Test Method | NOT RATED |
| Spline Quantity | 6 |
| Counterbore Diameter | 1.000 INCHES NOMINAL IN |
| Securing Hole Quantity | 2 |
| Drilled Hole Diameter | 0.062 INCHES NOMINAL IN |
| Surface Treatment | OXIDE AND CHROMIUM |
| First End Groove Diameter | 1.176 INCHES NOMINAL AA END IN |
| Hole Location | ON SPROCKET HUB 0.814 IN. FROM TEETH IN |
| Material | STEEL COMP 1010 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1035 OR STEEL COMP 1040 OR STEEL COMP 1042 OR STEEL COMP 1045 OR STEEL COMP 1046 OR STEEL COMP 1548 OR STEEL COMP 1049 OR STEEL COMP 1050 |
| Furnished Items | COUNTERBORE |
| 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 |
|---|---|
| 112725 | D/9 Drawing number reference only Tracor Aerospace Inc Advanced Systems Opn /aso/ Sub of Tracor Inc |
| 112725-2 | 3/9 Design control — primary reference Tracor Aerospace Inc Advanced Systems Opn /aso/ Sub of Tracor Inc |
NSN 3020-01-033-8778 is a Sprocket Wheel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 2910-01-408-4735, 1680-01-621-6723. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-033-8778: Spline Minor Diameter: 0.849 INCHES NOMINAL IN; Hub Outside Diameter: 1.250 INCHES NOMINAL AA END IN; Securing Method: DRILLED HOLE; Design Form: PLAIN. 28 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 3020-01-033-8778 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.