The Pulley,groove, cataloged under National Stock Number 3020-00-252-8381, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-252-8381 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | INCLUDED |
| Hub Outside Diameter | 2.500 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | INCLUDED |
| Bore Length | 2.500 INCHES NOMINAL IN |
| Design Form | SPOKED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Shape | V |
| Standard V-Belt Section Designation for Which Designed | B |
| Outside Diameter | 19.000 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Hub Split Location | THROUGH ONE WALL |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 18.710 INCHES NOMINAL IN |
| Groove Depth | 0.656 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 2 |
| V Groove Angle in Deg | 36.0 |
| Distance From Center of Bore to Bottom of Keyway | 0.805 INCHES NOMINAL IN |
| Keyway Width | 0.3115 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN |
| Unable to Decode | UNABLE TO DECODE |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.250 INCHES MINIMUM AND 1.252 INCHES MAXIMUM IN |
| Material | IRON OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Clamping Bolt Quantity | 1 |
| Face Width | 2.500 INCHES NOMINAL IN |
| Groove Width | 0.656 INCHES NOMINAL 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 |
|---|---|
| 11ACC99 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
| 11ACC99 | 5/9 Secondary reference Cooper Industries Industrial Machinery Div |
| 2013696 | 5/9 Secondary reference Cooper Industries Industrial Machinery Div |
| 11ACC99A | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
| 9702PC71 | 5/9 Secondary reference Cooper Industries Industrial Machinery Div |
| 9702PC71 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
| 2013696 | 5/9 Secondary reference Cooper Industries Inc Dba Cooper Tools |
| 11ACC99A | 3/9 Design control — primary reference Cooper Industries Industrial Machinery Div |
NSN 3020-00-252-8381 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-252-8381: Integral Cooling Vane: INCLUDED; Hub Outside Diameter: 2.500 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: INCLUDED. 30 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.