The Gear,spur, cataloged under National Stock Number 3020-00-689-3175, 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 Dressta North America Ltd. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-689-3175 |
| Primary Part Number | 331878R2 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| Teeth Quantity | 18 |
| Body Style | PLAIN, SOLID |
| Style Designator | HUBLESS |
| Pitch Diameter | 6.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 38 BOTH ENDS |
| Nominal Outside Diameter | 7.000 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 2.875 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 |
|---|---|
| 331878R2 PRIMARY | Dressta North America Ltd (USA) |
| 331878R1 PRIMARY | Komatsu America Corp. (USA) |
| 331878R2 | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 331878R1 | 5/9 Secondary reference Komatsu American Intl Co |
| 331878R2 | 5/9 Secondary reference U.S. Government activity |
| 331878R2 | 5/9 Secondary reference Komatsu American Intl Co |
| 331878R1 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-689-3175 is a Gear,spur, manufactured by Dressta North America Ltd, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-689-3175 has 3 manufacturer part numbers on file: 331878R2 (Dressta North America Ltd), 331878R1 (Komatsu America Corp.), 331878R2 (Komatsu America Corp.).
Key specifications for 331878R2: Teeth Quantity: 18; Body Style: PLAIN, SOLID; Style Designator: HUBLESS; Pitch Diameter: 6.0000 INCHES NOMINAL IN. 10 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.