The Gear,helical, cataloged under National Stock Number 3020-01-064-7323, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Naval Sea Systems Command. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-064-7323 |
| Primary Part Number | 3331242APC30 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — No Item Name Available |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Outside Diameter | 1.3050 INCHES IN |
| Face Nominal Width | 0.250 INCHES IN |
| Hub Nominal Diameter | 0.625 INCHES FIRST END IN |
| Pressure Angle | 20.0000 DEGREES |
| Mounting Hole Nominal Thread Size | 0.138 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Bore Style | PLAIN BOTH ENDS |
| Body Style | PLAIN, SOLID |
| Mounting Hole Type and Quantity | 2 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Material Document and Classification | MIL-B-994 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Style Designator | PROTRUDING HUB |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES FIRST END IN |
| Hub Style Designator | PINNED FIRST END |
| Tooth Direction | RIGHT |
| Helix Angle | 45.0000 DEGREES |
| Attachment Method | MOUNTING HOLE |
| Pitch Diameter | 1.2430 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| Bore Nominal Diameter | 0.2500 INCHES BOTH ENDS IN |
| Teeth Quantity | 30 |
| Tooth Form | STANDARD |
| Teeth Type | SINGLE HELIX |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| K139 | The Electric Tachometer Corp. (USA) |
| 3331242 | Naval Sea Systems Command (USA) |
| 3331242APC30 PRIMARY | Naval Sea Systems Command (USA) |
NSN 3020-01-064-7323 is a Gear,helical, manufactured by Naval Sea Systems Command, classified under FSC 3020 (No Item Name Available). Status: active.
NSN 3020-01-064-7323 has 3 cross-referenced part numbers: K139 (The Electric Tachometer Corp.), 3331242 (Naval Sea Systems Command), 3331242APC30 (Naval Sea Systems Command).
There are 11 known substitutes for 3020-01-064-7323: 3110-00-100-6147, 6320-00-225-7013, 1680-00-658-9935 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 3331242APC30: Mounting Hole Thread Series Designator: UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END; Nominal Outside Diameter: 1.3050 INCHES IN; Face Nominal Width: 0.250 INCHES IN; Hub Nominal Diameter: 0.625 INCHES FIRST END IN. 23 total characteristics are documented in the Federal Logistics Information System.