The Gear,spur, cataloged under National Stock Number 3020-01-346-1857, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-346-1857 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 42.0 MILLIMETERS BOTH ENDS MM |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 COUNTERSUNK AXIALLY THROUGH BODY FIRST END |
| Mounting Hole Nominal Diameter | 6.2 MILLIMETERS AXIALLY THROUGH BODY FIRST END MM |
| Style Designator | HUBLESS |
| Nominal Outside Diameter | 64.0 MILLIMETERS MM |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 6.0 MILLIMETERS MM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| T436706 | 3/9 Design control — primary reference U.S. Government activity |
| T436706 | C/1 Advisory reference — outside the item-of-supply concept Fairbanks Morse, Llc |
NSN 3020-01-346-1857 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-346-1857: Bore Nominal Diameter: 42.0 MILLIMETERS BOTH ENDS MM; Bore Style: PLAIN BOTH ENDS; Mounting Hole Type and Quantity: 1 COUNTERSUNK AXIALLY THROUGH BODY FIRST END; Mounting Hole Nominal Diameter: 6.2 MILLIMETERS AXIALLY THROUGH BODY FIRST END MM. 8 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.