The Gear,helical, cataloged under National Stock Number 3020-00-522-1177, 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 Garwood/feller Inc Garwood Winch Div. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-522-1177 |
| Primary Part Number | 3005280 |
| Item Name | Gear,helical |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Garwood/feller Inc Garwood Winch Div |
| Status | ACTIVE |
| Keyway Nominal Width | 0.3140 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 1.5005 INCHES BOTH ENDS IN |
| Helix Angle | 20.0000 DEGREES |
| Hub Nominal Diameter | 2.250 INCHES SECOND END IN |
| Hub Nominal Diameter | 2.375 INCHES FIRST END IN |
| Teeth Quantity | 26 |
| Body Style | PLAIN, SOLID |
| Tooth Direction | LEFT |
| Bore Style | W/ 2 KEYWAYS BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 2.2500 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 2.3750 INCHES FIRST END IN |
| Teeth Type | SINGLE HELIX |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 63.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Pitch Diameter | 5.5340 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 5.8490 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.8933 INCHES BOTH ENDS IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8620 AND STEEL COMP 8720 OVERALL |
| Face Nominal Width | 0.750 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 |
|---|---|
| 3005280 PRIMARY | Garwood/feller Inc Garwood Winch Div (USA) |
| 10876135 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2590005221177 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 3020-00-522-1177 is a Gear,helical, manufactured by Garwood/feller Inc Garwood Winch Div, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-522-1177 has 2 manufacturer part numbers on file: 3005280 (Garwood/feller Inc Garwood Winch Div), 10876135 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 3005280: Keyway Nominal Width: 0.3140 INCHES BOTH ENDS IN; Bore Nominal Diameter: 1.5005 INCHES BOTH ENDS IN; Helix Angle: 20.0000 DEGREES; Hub Nominal Diameter: 2.250 INCHES SECOND END IN. 23 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.