The Pulley,groove, cataloged under National Stock Number 3020-01-085-9659, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-085-9659 |
| 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 | 0.310 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.125 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Pitch Diameter | 0.440 INCHES NOMINAL IN |
| Groove Depth | 0.030 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.268 INCHES NOMINAL IN |
| Groove Quantity | 1 |
| Counterbore Location | AA END |
| Counterbore Diameter | 0.3125 INCHES NOMINAL IN |
| Counterbore Feature | INCLUDED |
| Bore Diameter | 0.196 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Face Width | 0.310 INCHES NOMINAL IN |
| Groove Width | 0.250 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 |
|---|---|
| 102637-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-085-9659 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-085-9659: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 0.310 INCHES NOMINAL IN. 23 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.