The Pulley,flat, cataloged under National Stock Number 3020-01-439-6607, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-439-6607 |
| Item Name | Pulley,flat |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.7500 INCHES NOMINAL BB END IN |
| Bore Feature | INCLUDED |
| Securing Method | SETSCREW |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.1200 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Outside Diameter | 1.4000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | MIL-T-21014,CL 1,TYPE I,II OR III MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Rim Type | SOLID |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.2390 INCHES NOMINAL IN |
| Counterbore Location | AA END |
| Counterbore Diameter | 0.7800 INCHES NOMINAL IN |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | CADMIUM |
| Distance From Outside Flange/rim to Hub End and Location | 0.1100 INCHES NOMINAL BB END IN |
| Keying Facility | NOT INCLUDED |
| Counterbore Feature | INCLUDED |
| Bore Diameter | 0.5001 INCHES NOMINAL IN |
| Material | TUNGSTEN ALLOY UNS R07100 OVERALL |
| Crown Face | NOT INCLUDED |
| Face Width | 1.0100 INCHES NOMINAL IN |
| Securing Location | AA END |
| 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 |
|---|---|
| 881092-5 | 3/9 Design control — primary reference Drs Sustainment Systems, Inc. |
| 881092-5 | 3/2 Design control — primary reference U.S. Government activity |
| 881092 | D/9 Drawing number reference only Drs Sustainment Systems, Inc. |
NSN 3020-01-439-6607 is a Pulley,flat, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-439-6607: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.7500 INCHES NOMINAL BB END IN; Bore Feature: INCLUDED; Securing Method: SETSCREW. 27 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.