The Pulley,groove, cataloged under National Stock Number 3020-00-406-4583, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 30 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-406-4583 |
| Primary Part Number | 11647331 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 1.750 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Securing Method | KEY |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.840 INCHES MINIMUM AND 1.910 INCHES MAXIMUM IN |
| Design Form | SPOKED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Shape | V |
| Outside Diameter | 7.548 INCHES MINIMUM AND 7.576 INCHES MAXIMUM IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 7.548 INCHES MINIMUM AND 7.576 INCHES MAXIMUM IN |
| Groove Depth | 0.350 INCHES MINIMUM AND 0.613 INCHES MAXIMUM IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 4 OR 2 |
| V Groove Angle in Deg | 40.0 |
| Protruding Hub Characteristic | PLAIN |
| Distance From Center of Bore to Bottom of Keyway | 0.611 INCHES NOMINAL IN |
| Keyway Width | 0.2510 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | ENAMEL |
| Distance From Outside Flange/rim to Hub End and Location | 0.720 INCHES MINIMUM BOTH ENDS AND 0.780 INCHES MAXIMUM BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.000 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Material | IRON MALLEABLE OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 3.265 INCHES MINIMUM AND 3.327 INCHES MAXIMUM 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 |
|---|---|
| 11647331 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 3020004064583 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 3020004064583 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
NSN 3020-00-406-4583 is a Pulley,groove, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-406-4583 has 1 manufacturer part number on file: 11647331 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 11647331: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.750 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Securing Method: KEY. 30 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.