The Gear,helical, cataloged under National Stock Number 3020-00-738-8490, 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 Telemechanics Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-738-8490 |
| Primary Part Number | 163463 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.379 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.710 INCHES FIRST END IN |
| Teeth Quantity | 24 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.567 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.369 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | PROTRUDING HUB |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 0.812 INCHES IN |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.508 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 |
| Part Number | Manufacturer |
|---|---|
| 163463 PRIMARY | Telemechanics Inc (USA) |
| Reference | Meaning |
|---|---|
| 163463 | 5/9 Secondary reference American Telephone and Telegraph Co |
| 65010055-001 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-738-8490 is a Gear,helical, manufactured by Telemechanics Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-738-8490 has 1 manufacturer part number on file: 163463 (Telemechanics Inc).
Key specifications for 163463: Bore Nominal Diameter: 0.379 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.710 INCHES FIRST END IN; Teeth Quantity: 24; Body Style: PLAIN, SOLID. 16 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.