The Gear,spur, cataloged under National Stock Number 3020-00-392-7729, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-392-7729 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Teeth Quantity | 35 |
| Body Style | PLAIN, SOLID |
| Bore Style | PARTIAL COUNTERBORE FIRST END |
| Precision Classification | QUALITY NUMBER 8 |
| Mounting Hole Nominal Diameter | 0.040 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 0.5468 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Pressure Angle | 20.0000 DEGREES |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| A3728 | 5/9 Secondary reference U.S. Government activity |
| SC-B-108605 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-392-7729 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5120-01-153-1200. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-392-7729: Teeth Quantity: 35; Body Style: PLAIN, SOLID; Bore Style: PARTIAL COUNTERBORE FIRST END; Precision Classification: QUALITY NUMBER 8. 10 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.