The Pulley,groove, cataloged under National Stock Number 3020-00-451-6675, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-451-6675 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 1.880 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | NOT INCLUDED |
| Bearing Quantity | 1 |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.000 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Groove Radius | 0.329 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN |
| Groove Shape | U |
| Outside Diameter | 5.000 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | MIL-S-6758, COND D1 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-13048, COMP 4130 MIL SPEC 1ST MATERIAL RESPONSE OR QQ-S-637, COMP 1140 THRU 1151 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.940 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | INCLUDED |
| Groove Quantity | 1 |
| Bearing Type | SLEEVE |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | CADMIUM AND CHROMATE |
| Bore Diameter | 1.375 INCHES MINIMUM AND 1.376 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 OR STEEL OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 1.000 INCHES NOMINAL IN |
| Groove Width | 0.658 INCHES MINIMUM AND 0.718 INCHES MAXIMUM 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 |
|---|---|
| 2587587 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-451-6675 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-451-6675: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 1.880 INCHES NOMINAL BOTH ENDS IN; Bore Feature: NOT INCLUDED; Bearing Quantity: 1. 26 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.