The Gear,worm, cataloged under National Stock Number 3020-00-338-9570, 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 Siemens Energy, Inc.. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-338-9570 |
| Primary Part Number | LC264B |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Thread Form Direction | LEFT-HAND |
| Keyway Nominal Width | 0.375 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.625 INCHES BOTH ENDS IN |
| Helix Angle | 37.5665 DEGREES |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Face Type | STRAIGHT |
| Style Designator | HUBLESS |
| Pitch Diameter | 2.6820 INCHES NOMINAL IN |
| Thread Form Quantity | 10 |
| Nominal Outside Diameter | 3.008 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.970 INCHES BOTH ENDS IN |
| Material | STEEL OVERALL |
| Face Nominal Width | 3.250 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 |
|---|---|
| LC264B PRIMARY | Siemens Energy, Inc. (USA) |
| G7122PC65 | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| DD453S47-025PC65 | 5/2 Secondary reference U.S. Government activity |
| DD423S47-33PC65 | 5/2 Secondary reference U.S. Government activity |
| DD423S47-47PC65 | 5/2 Secondary reference U.S. Government activity |
| G15126PC131 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| G7188PC65 | 5/9 Secondary reference Siemens Energy, Inc. |
| G7188PC65 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| H3115015REV2PC131 | 5/2 Secondary reference U.S. Government activity |
| G15126PC131 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 3020-00-338-9570 is a Gear,worm, manufactured by Siemens Energy, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-338-9570 has 2 manufacturer part numbers on file: LC264B (Siemens Energy, Inc.), G7122PC65 (Siemens Energy, Inc.).
Key specifications for LC264B: Thread Form Direction: LEFT-HAND; Keyway Nominal Width: 0.375 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.625 INCHES BOTH ENDS IN; Helix Angle: 37.5665 DEGREES. 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.
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.