The Gear,helical, cataloged under National Stock Number 3020-00-340-0813, 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 21 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-340-0813 |
| Primary Part Number | 307847 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.5000 INCHES BOTH ENDS IN |
| Helix Angle | 22.5000 DEGREES |
| Teeth Quantity | 70 |
| Body Style | SPOKED |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 2 PLAIN AXIALLY THROUGH BODY FIRST END |
| Mounting Hole Nominal Diameter | 0.164 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Style Designator | HUBLESS, RECESSED BODY |
| Pitch Diameter | 3.1250 INCHES NOMINAL IN |
| Tooth Form | SPECIAL |
| Nominal Outside Diameter | 3.2068 INCHES IN |
| Surface Treatment | CHROMATE BODY |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL BODY |
| Material | PLASTIC POLYAMIDE NYLON TEETH |
| Bolt Hole Circle Nominal Diameter | 0.750 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 0.025 INCHES FIRST END IN |
| Face Nominal Width | 0.312 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 |
|---|---|
| 307847 PRIMARY | Telemechanics Inc (USA) |
NSN 3020-00-340-0813 is a Gear,helical, manufactured by Telemechanics Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-340-0813 has 1 manufacturer part number on file: 307847 (Telemechanics Inc).
Key specifications for 307847: Bore Nominal Diameter: 0.5000 INCHES BOTH ENDS IN; Helix Angle: 22.5000 DEGREES; Teeth Quantity: 70; Body Style: SPOKED. 21 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.