The Gear,spur, cataloged under National Stock Number 3020-00-541-1609, 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 Hatch & Kirk, Inc.. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-541-1609 |
| Primary Part Number | 3262921 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hatch & Kirk, Inc. |
| Status | ACTIVE |
| Hub Nominal Diameter | 3.125 INCHES FIRST END IN |
| Teeth Quantity | 135 |
| Body Style | PLAIN, SOLID |
| Mounting Hole Type and Quantity | 1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Precision Classification | QUALITY NUMBER 5 OR QUALITY NUMBER 6 |
| Nominal Overall Length | 1.688 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 8.4375 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Mounting Hole Thread Quantity Per Inch | 20 TRANSVERSELY THROUGH HUB FIRST END |
| Pressure Angle | 14.5000 DEGREES |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.500 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 |
|---|---|
| 3262921 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3262921 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
| A10587-1 | 5/9 Secondary reference Western Machinery Corp |
NSN 3020-00-541-1609 is a Gear,spur, manufactured by Hatch & Kirk, Inc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-541-1609 has 1 manufacturer part number on file: 3262921 (Hatch & Kirk, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5841-01-086-4257. Verify interchangeability with system specifications before substitution.
Key specifications for 3262921: Hub Nominal Diameter: 3.125 INCHES FIRST END IN; Teeth Quantity: 135; Body Style: PLAIN, SOLID; Mounting Hole Type and Quantity: 1 THREADED TRANSVERSELY THROUGH HUB FIRST END. 14 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.