The Gear,helical, cataloged under National Stock Number 3020-01-083-9485, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-083-9485 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Backlash Designation | GRADE A |
| Teeth Quantity | 126 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS |
| Pitch Diameter | 10.6060 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 12.1740 INCHES IN |
| Test Data Document | 35402-279SR-18-6-30 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Pressure Angle | 25.0000 DEGREES |
| Attachment Method | SLOT |
| Face Nominal Width | 3.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 279SR-18-6.3 | 3/9 Design control — primary reference Hamilton Gear and Machine Co |
NSN 3020-01-083-9485 is a Gear,helical, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-083-9485: Backlash Designation: GRADE A; Teeth Quantity: 126; Body Style: PLAIN, SOLID; Tooth Direction: LEFT. 13 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 3020-01-083-9485 has DEMIL Code B. 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.