The Pulley,flat, cataloged under National Stock Number 3020-00-347-7637, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-347-7637 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Taper Bore Minor Diameter | 0.2500 INCHES NOMINAL IN |
| Securing Method | DRILLED HOLE |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.860 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | OFFSET |
| Criticality Code Justification | ANAL |
| Material Document and Classification | QQ-B-613 COMPOSITION 22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Rim Type | SOLID |
| Bore Type | TAPERED |
| Bearings | NOT INCLUDED |
| Taper Bore Major Diameter | 0.2814 INCHES NOMINAL IN |
| Securing Hole Quantity | 4 |
| Bolt Circle Diameter | 1.660 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.375 INCHES NOMINAL IN |
| Keying Facility | NOT INCLUDED |
| Hole Location | THROUGH PULLEY BODY 90 DEG APART |
| Counterbore Feature | NOT INCLUDED |
| Material | COPPER ALLOY OVERALL |
| Crown Face | NOT INCLUDED |
| 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 | Y |
| Reference | Meaning |
|---|---|
| 501-2273-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-347-7637 is a Pulley,flat, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-347-7637: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Taper Bore Minor Diameter: 0.2500 INCHES NOMINAL IN; Securing Method: DRILLED HOLE. 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.