The Pulley,groove, cataloged under National Stock Number 3020-01-203-7337, 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26 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-203-7337 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Bore Feature | INCLUDED |
| Bore Length | 0.538 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Shape | V |
| Outside Diameter | 1.811 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 2 |
| Style Designator | PLAIN |
| Pitch Diameter | 1.811 INCHES NOMINAL IN |
| Groove Depth | 0.124 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Groove Quantity | 1 |
| V Groove Angle in Deg | 62.0 |
| Distance From Center of Bore to Bottom of Keyway | 0.623 INCHES NOMINAL IN |
| Keyway Width | 0.125 INCHES NOMINAL IN |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | OXIDE |
| Distance From Outside Flange/rim to Hub End and Location | 0.250 INCHES NOMINAL AA END IN |
| Bore Diameter | 1.100 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Furnished Items | KEYING FACILITY |
| Face Width | 0.288 INCHES NOMINAL IN |
| Groove Width | 0.175 INCHES MINIMUM AND 0.179 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 |
|---|---|
| 748946-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-203-7337 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-203-7337: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Bore Length: 0.538 INCHES NOMINAL IN; Design Form: PLAIN. 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.