The Pulley,groove, cataloged under National Stock Number 3020-00-396-7887, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3020-00-396-7887 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Feature | INCLUDED |
| Bearing Quantity | 1 |
| Design Form | PLAIN |
| Groove Shape | U |
| Outside Diameter | 2.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Bearing Type | BALL |
| Counterbore Feature | INCLUDED |
| Material | ALUMINUM ALLOY OVERALL |
| Face Width | 0.410 INCHES MINIMUM AND 0.422 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 2325391 | 3/2 Design control — primary reference U.S. Government activity |
| 2325391 | 5/9 Secondary reference The Boeing Company |
NSN 3020-00-396-7887 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): 3040-01-183-3769. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-00-396-7887: Bore Feature: INCLUDED; Bearing Quantity: 1; Design Form: PLAIN; Groove Shape: U. 13 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.