The Gear,spur, cataloged under National Stock Number 3020-01-268-7470, 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 Grove U.s. Llc Dba Grove Us Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-268-7470 |
| Primary Part Number | 6-490-000078 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Grove U.s. Llc Dba Grove Us Llc |
| Status | ACTIVE |
| Keyway Nominal Width | 0.314 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.378 INCHES BOTH ENDS IN |
| Teeth Quantity | 45 |
| Body Style | PLAIN, SOLID |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Mounting Hole Type and Quantity | 2 THREADED AXIALLY THROUGH BODY FIRST END |
| Hardness Rating | 450.0 BRINELL STANDARD MINIMUM AND 500.0 BRINELL STANDARD MAXIMUM TEETH |
| Style Designator | HUBLESS |
| Pitch Diameter | 3.7500 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Mounting Hole Nominal Thread Size | 0.257 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 3.802 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.829 INCHES BOTH ENDS IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL COMP 8620 OR STEEL COMP 4320 OVERALL |
| Bolt Hole Circle Nominal Diameter | 3.000 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 1.375 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 |
|---|---|
| 6-490-000078 PRIMARY | Grove U.s. Llc Dba Grove Us Llc (USA) |
| Reference | Meaning |
|---|---|
| C6-490-000078 | D/9 Drawing number reference only Grove U.s. Llc Dba Grove Us Llc |
NSN 3020-01-268-7470 is a Gear,spur, manufactured by Grove U.s. Llc Dba Grove Us Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-268-7470 has 1 manufacturer part number on file: 6-490-000078 (Grove U.s. Llc Dba Grove Us Llc).
Key specifications for 6-490-000078: Keyway Nominal Width: 0.314 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.378 INCHES BOTH ENDS IN; Teeth Quantity: 45; Body Style: PLAIN, SOLID. 19 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.