The Gear,worm Wheel, cataloged under National Stock Number 3020-00-585-8593, 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 Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 21 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-585-8593 |
| Primary Part Number | 741C290-1 |
| Item Name | Gear,worm Wheel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Keyway Nominal Width | 0.870 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 3.344 INCHES BOTH ENDS IN |
| Helix Angle | 15.9100 DEGREES |
| Hub Nominal Diameter | 6.500 INCHES FIRST END IN |
| Teeth Quantity | 55 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | RIGHT |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.375 INCHES FIRST END IN |
| Throat Nominal Radius | 0.853 INCHES IN |
| Face Type | CONCAVE |
| Style Designator | PROTRUDING HUB |
| Material Document and Classification | B11G22A CAGE 24446 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 10.5042 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 11.019 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 2.125 INCHES BOTH ENDS IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Mating Thread Lead Quantity | 3 |
| Face Nominal Width | 1.625 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 |
|---|---|
| 741C290-1 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| 741C290-001 | C/1 Advisory reference — outside the item-of-supply concept General Electric Company |
| 741C290 | D/9 Drawing number reference only General Electric Company |
| 741C290-1 | 3/9 Design control — primary reference U.S. Government activity |
| 741C290-1 | 5/9 Secondary reference General Electric Company |
NSN 3020-00-585-8593 is a Gear,worm Wheel, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-585-8593 has 1 manufacturer part number on file: 741C290-1 (Timken Gears & Services Inc. Div Philadelphia Gear).
Key specifications for 741C290-1: Keyway Nominal Width: 0.870 INCHES BOTH ENDS IN; Bore Nominal Diameter: 3.344 INCHES BOTH ENDS IN; Helix Angle: 15.9100 DEGREES; Hub Nominal Diameter: 6.500 INCHES FIRST END IN. 21 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.