The Gear,worm, cataloged under National Stock Number 3020-00-200-1817, 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 Grimes Aerospace Company. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-200-1817 |
| Primary Part Number | A6583 |
| Item Name | Gear,worm |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Thread Form Direction | RIGHT-HAND |
| Bore Nominal Diameter | 0.186 INCHES BOTH ENDS IN |
| Helix Angle | 4.0833 DEGREES |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 2 THREADED TRANSVERSELY THROUGH FACE |
| Style Designator | HUBLESS |
| Pitch Diameter | 0.4375 INCHES NOMINAL IN |
| Thread Form Quantity | 1 |
| Mounting Hole Nominal Thread Size | 0.112 INCHES TRANSVERSELY THROUGH FACE IN |
| Nominal Outside Diameter | 0.498 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 40 TRANSVERSELY THROUGH FACE |
| Pressure Angle | 14.5000 DEGREES |
| Material | STEEL OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH FACE |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.656 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 |
|---|---|
| A6583 PRIMARY | Grimes Aerospace Company (USA) |
NSN 3020-00-200-1817 is a Gear,worm, manufactured by Grimes Aerospace Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-200-1817 has 1 manufacturer part number on file: A6583 (Grimes Aerospace Company).
Key specifications for A6583: Thread Form Direction: RIGHT-HAND; Bore Nominal Diameter: 0.186 INCHES BOTH ENDS IN; Helix Angle: 4.0833 DEGREES; Bore Style: PLAIN BOTH ENDS. 16 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.