The Gear,spur, cataloged under National Stock Number 3020-01-271-0185, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-271-0185 |
| Primary Part Number | 2C7-1161 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Keyway Nominal Width | 1.750 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 7.500 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 12.875 INCHES FIRST END IN |
| Teeth Quantity | 80 |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 5.000 INCHES FIRST END IN |
| Style Designator | PROTRUDING HUB |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 46.000 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 4.625 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 |
|---|---|
| 2C7-1161 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2D3-978 ITEM 10 | C/1 Advisory reference — outside the item-of-supply concept Lake Shore Systems, Inc. |
NSN 3020-01-271-0185 is a Gear,spur, manufactured by Lake Shore Systems, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-271-0185 has 1 manufacturer part number on file: 2C7-1161 (Lake Shore Systems, Inc.).
Key specifications for 2C7-1161: Keyway Nominal Width: 1.750 INCHES BOTH ENDS IN; Bore Nominal Diameter: 7.500 INCHES BOTH ENDS IN; Hub Nominal Diameter: 12.875 INCHES FIRST END IN; Teeth Quantity: 80. 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.