The Gear,helical, cataloged under National Stock Number 3020-01-224-6311, 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 Lake Shore Systems, Inc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-224-6311 |
| Primary Part Number | 39394 PIECE 40 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Teeth Type | DOUBLE HELIX, SOLID |
| Style Designator | HUBLESS |
| Material Document and Classification | SAE 8640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.5000 INCHES NOMINAL IN |
| Material | STEEL COMP 8640 OVERALL |
| Face Nominal Width | 4.000 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 |
|---|---|
| 39394 PIECE 40 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 177202 | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 39394 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 3020-01-224-6311 is a Gear,helical, manufactured by Lake Shore Systems, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-224-6311 has 2 manufacturer part numbers on file: 39394 PIECE 40 (Lake Shore Systems, Inc.), 177202 (Lake Shore Systems, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-225-6984, 3020-01-225-6994. Verify interchangeability with system specifications before substitution.
Key specifications for 39394 PIECE 40: Body Style: PLAIN, SOLID; Bore Style: W/ KEYWAY BOTH ENDS; Teeth Type: DOUBLE HELIX, SOLID; Style Designator: HUBLESS. 8 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.