The Pulley,groove, cataloged under National Stock Number 3020-01-259-2397, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-259-2397 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 3.000 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.218 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 11.380 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-A-250/11, ALLOY 6061, T651 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.625 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 10 |
| Distance From Center of Bore to Bottom of Keyway | 1.469 INCHES NOMINAL IN |
| Keyway Width | 0.504 INCHES NOMINAL IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 2.438 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Furnished Items | KEYING FACILITY |
| Face Width | 3.000 INCHES NOMINAL IN |
| Groove Width | 0.436 INCHES NOMINAL IN |
| 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 |
|---|---|
| 640-1350 | D/9 Drawing number reference only Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 640-1350-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-259-2397 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3020-01-259-2398. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-259-2397: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 3.000 INCHES NOMINAL IN. 25 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.