The Gear,helical, cataloged under National Stock Number 3020-01-269-6668, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is O T S I. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-269-6668 |
| Primary Part Number | 5893780 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | O T S I |
| Status | ACTIVE |
| Helix Angle | 25.0000 DEGREES |
| Teeth Quantity | 26 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Nominal Distance Between Body Face and Protruding Hub End | 0.376 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.516 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 41.0 ROCKWELL C MAXIMUM BORE SURFACE |
| Hardness Rating | 90.0 ROCKWELL SUPERFICIAL 15-N NOMINAL BODY |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 FED STD 1ST MATERIAL RESPONSE OR MIL-S-7393 MIL STD 2ND MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.5937 INCHES NOMINAL IN |
| Hub Style Designator | THREADED BOTH ENDS |
| Nominal Outside Diameter | 1.702 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP E9310 OVERALL |
| Face Nominal Width | 0.938 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 |
| Part Number | Manufacturer |
|---|---|
| 5893780 PRIMARY | O T S I (USA) |
| Reference | Meaning |
|---|---|
| 5893780 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-269-6668 is a Gear,helical, manufactured by O T S I, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-269-6668 has 1 manufacturer part number on file: 5893780 (O T S I).
Key specifications for 5893780: Helix Angle: 25.0000 DEGREES; Teeth Quantity: 26; Body Style: PLAIN, SOLID; Tooth Direction: RIGHT. 17 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 3020-01-269-6668 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.