The Gear Rack, cataloged under National Stock Number 3020-00-656-6778, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-656-6778 |
| Item Name | Gear Rack |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Teeth Quantity | 46 |
| Pitch Height | 0.4380 INCHES NOMINAL IN |
| Mounting Hole Type and Quantity | 1 THREADED TRANSVERSELY THROUGH SIDE |
| Mounting Hole Type and Quantity | 2 PLAIN TRANSVERSELY THROUGH BOTTOM |
| Mounting Hole Nominal Diameter | 0.219 INCHES TRANSVERSELY THROUGH BOTTOM IN |
| Teeth Type | SPUR |
| Nominal Overall Length | 9.000 INCHES IN |
| Style Designator | SQUARE OR RECTANGULAR, BOSS MOUNTED |
| Tooth Form | STANDARD |
| Mounting Hole Nominal Thread Size | 0.190 INCHES TRANSVERSELY THROUGH SIDE IN |
| Boss Nominal Length | 1.000 INCHES BOTH ENDS IN |
| Boss Nominal Diameter | 0.312 INCHES BOTH ENDS IN |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL OVERALL |
| Mounting Hole Thread Series Designator | UNF TRANSVERSELY THROUGH SIDE |
| Nominal Thickness | 0.500 INCHES IN |
| 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 |
| Reference | Meaning |
|---|---|
| 814E207 | 3/9 Design control — primary reference Kersey / American Lafrance a Div of Figgie International Inc |
NSN 3020-00-656-6778 is a Gear Rack, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-656-6778: Teeth Quantity: 46; Pitch Height: 0.4380 INCHES NOMINAL IN; Mounting Hole Type and Quantity: 1 THREADED TRANSVERSELY THROUGH SIDE; Mounting Hole Type and Quantity: 2 PLAIN TRANSVERSELY THROUGH BOTTOM. 18 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.