The Pulley,groove, cataloged under National Stock Number 3020-00-499-9646, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-499-9646 |
| Primary Part Number | 7L0412 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 4.120 INCHES NOMINAL AA END IN |
| Bore Feature | INCLUDED |
| Taper Bore Minor Diameter | 2.120 INCHES NOMINAL IN |
| Third Step Length and Location | 0.820 INCHES NOMINAL AA END IN |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.820 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Unable to Decode | UNABLE TO DECODE |
| Web/spoke Relationship to Face Centerline | OFFSET |
| First Step Face Largest Diameter and Location | 4.499 INCHES NOMINAL AA END IN |
| Second Step Face Largest Diameter and Location | 6.380 INCHES NOMINAL AA END IN |
| Groove Shape | V |
| Outside Diameter | 7.820 INCHES NOMINAL IN |
| Taper Major Diameter Location | AA END |
| Style Designator | PLAIN |
| Pitch Diameter | 6.813 INCHES NOMINAL IN |
| Groove Depth | 0.515 INCHES NOMINAL IN |
| Bore Type | TAPERED |
| Bearings | NOT INCLUDED |
| Groove Quantity | 3 |
| Taper Bore Major Diameter | 2.494 INCHES NOMINAL IN |
| V Groove Angle in Deg | 38.0 |
| Protruding Hub Characteristic | STEPPED |
| Unable to Decode | UNABLE TO DECODE |
| Unable to Decode | UNABLE TO DECODE |
| Tapered Spline Largest Minor Diameter Location | AA END |
| Distance From Outside Flange/rim to Hub End and Location | 1.190 INCHES NOMINAL AA END IN |
| Counterbore Feature | 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 |
| Part Number | Manufacturer |
|---|---|
| 7L0412 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 3020-00-499-9646 is a Pulley,groove, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-499-9646 has 1 manufacturer part number on file: 7L0412 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 7L0412: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 4.120 INCHES NOMINAL AA END IN; Bore Feature: INCLUDED; Taper Bore Minor Diameter: 2.120 INCHES NOMINAL IN. 29 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.