The Pulley,flat, cataloged under National Stock Number 3020-00-985-3351, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-985-3351 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| FSC Application Data | PULLEY FLAT,MULT1APPLICATION |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Securing Method | DRILLED HOLE |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.406 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Outside Diameter | 0.763 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Rim Type | SOLID |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Securing Hole Quantity | 1 |
| Drilled Hole Diameter | 0.065 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Keying Facility | NOT INCLUDED |
| Hole Location | CENTERED 0.203 IN. FROM FACE IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.251 INCHES NOMINAL IN |
| Material | ALUMINUM OVERALL |
| Crown Face | NOT INCLUDED |
| Face Width | 0.406 INCHES NOMINAL IN |
| Securing Location | BOTH ENDS |
| Lightening Hole | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 549-5859-002 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 549-5859-002 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-985-3351 is a Pulley,flat, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-985-3351: FSC Application Data: PULLEY FLAT,MULT1APPLICATION; Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Securing Method: DRILLED HOLE. 24 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.