The Gear Sector,spur, cataloged under National Stock Number 3020-01-031-9637, 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 Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-031-9637 |
| Primary Part Number | NC177733 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Leslie Controls, Inc. Dba Leslie Controls Inc |
| Status | ACTIVE |
| Keyway Nominal Width | 0.500 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 2.500 INCHES BOTH ENDS IN |
| Teeth Quantity | 20 |
| Nominal Outside Radius | 3.0834 INCHES IN |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Tooth Form | STANDARD |
| Arc Nominal Length | 5.3500 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 1.568 INCHES BOTH ENDS IN |
| Pitch Radius | 3.0000 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | IRON CAST OVERALL |
| Face Nominal Width | 1.000 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 |
|---|---|
| NC177733 PRIMARY | Leslie Controls, Inc. Dba Leslie Controls Inc (USA) |
| Reference | Meaning |
|---|---|
| 001-35-26-0012-0000 | 5/9 Secondary reference Circor Intl Inc |
| 198-24-69PC5 | 5/9 Secondary reference Circor Intl Inc |
| 198-24-71PC5 | 5/9 Secondary reference Circor Intl Inc |
| 001-35-26-0012-4150 | 5/9 Secondary reference Circor Intl Inc |
| 001-35-26-0012 | 5/9 Secondary reference Circor Intl Inc |
NSN 3020-01-031-9637 is a Gear Sector,spur, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-031-9637 has 1 manufacturer part number on file: NC177733 (Leslie Controls, Inc. Dba Leslie Controls Inc).
Key specifications for NC177733: Keyway Nominal Width: 0.500 INCHES BOTH ENDS IN; Bore Nominal Diameter: 2.500 INCHES BOTH ENDS IN; Teeth Quantity: 20; Nominal Outside Radius: 3.0834 INCHES IN. 12 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.