The Pulley,flat, cataloged under National Stock Number 3020-01-202-3647, 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 Ridge Engineering, Llc.. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-202-3647 |
| Primary Part Number | 586R666H01 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Ridge Engineering, Llc. |
| Status | ACTIVE |
| Hub Outside Diameter | 0.375 INCHES NOMINAL BB END IN |
| Hub Outside Diameter | 0.560 INCHES NOMINAL AA END IN |
| Design Form | WEBBED |
| Outside Diameter | 1.750 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.220 INCHES NOMINAL AA END IN |
| Face Width | 0.830 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 586R666H01 PRIMARY | Ridge Engineering, Llc. (USA) |
| Reference | Meaning |
|---|---|
| 586R666 | D/9 Drawing number reference only U.S. Government activity |
| 586R666H01 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-202-3647 is a Pulley,flat, manufactured by Ridge Engineering, Llc., classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-202-3647 has 1 manufacturer part number on file: 586R666H01 (Ridge Engineering, Llc.).
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-428-6406, 3020-01-570-8377. Verify interchangeability with system specifications before substitution.
Key specifications for 586R666H01: Hub Outside Diameter: 0.375 INCHES NOMINAL BB END IN; Hub Outside Diameter: 0.560 INCHES NOMINAL AA END IN; Design Form: WEBBED; Outside Diameter: 1.750 INCHES NOMINAL IN. 8 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.
NSN 3020-01-202-3647 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.