The Pulley,groove, cataloged under National Stock Number 3020-01-124-7963, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 28 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-124-7963 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 5.500 INCHES MINIMUM AND 5.501 INCHES MAXIMUM AA END IN |
| Bore Feature | INCLUDED |
| Taper Bore Minor Diameter | 1.369 INCHES NOMINAL IN |
| Securing Method | THREADED HOLE(S) |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 3.090 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | OFFSET |
| Groove Shape | V |
| Outside Diameter | 9.750 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Groove Depth | 0.380 INCHES NOMINAL IN |
| Bore Type | TAPERED |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.310 INCHES NOMINAL IN |
| Groove Quantity | 3 |
| Counterbore Location | BB END |
| Taper Bore Major Diameter | 1.500 INCHES NOMINAL IN |
| V Groove Angle in Deg | 40.0 |
| Protruding Hub Characteristic | PLAIN |
| Counterbore Diameter | 5.501 INCHES MINIMUM AND 5.503 INCHES MAXIMUM IN |
| Securing Hole Quantity | 6 |
| Bolt Circle Diameter | 4.876 INCHES NOMINAL IN |
| Thread Size | 5/16-24 |
| Unable to Decode | UNABLE TO DECODE AND UNABLE TO DECODE |
| Surface Treatment | CADMIUM AND CHROMATE |
| Distance From Outside Flange/rim to Hub End and Location | 1.560 INCHES NOMINAL AA END AND 0.310 INCHES NOMINAL BB END 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 |
|---|---|
| 2617026 | 3/2 Design control — primary reference U.S. Government activity |
| 10085813 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 3020-01-124-7963 is a Pulley,groove, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-124-7963: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 5.500 INCHES MINIMUM AND 5.501 INCHES MAXIMUM AA END IN; Bore Feature: INCLUDED; Taper Bore Minor Diameter: 1.369 INCHES NOMINAL IN. 28 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.