The Pulley,groove, cataloged under National Stock Number 3020-01-141-8688, 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 Naval Sea Systems Command. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-141-8688 |
| Primary Part Number | 5428644 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.750 INCHES NOMINAL AA END IN |
| Bore Feature | NOT INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Design Form | PLAIN |
| Groove Radius | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Groove Shape | U |
| Outside Diameter | 3.380 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | ASTM A322,4130 THRU 4140,OPTIONAL COND ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A331,4130 THRU 4140,OPTIONAL COND ASSN STD SINGLE MATERIAL RESPONSE OR QQS626,4130 THRU 4140 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.160 INCHES NOMINAL IN |
| Groove Quantity | 1 |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | NICKEL |
| Distance From Outside Flange/rim to Hub End and Location | 0.287 INCHES NOMINAL AA END IN |
| Material | STEEL COMP 4130 AND STEEL COMP 4140 OVERALL |
| Face Width | 0.400 INCHES NOMINAL IN |
| Groove Width | 0.182 INCHES MINIMUM AND 0.187 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 |
| Part Number | Manufacturer |
|---|---|
| 5428644 | Amz Alabama Inc. (USA) |
| 5428644 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5428644-1 | 5/9 Secondary reference U.S. Government activity |
| 5428644-1 | 5/9 Secondary reference Naval Sea Systems Command |
| 5428644 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-01-141-8688 is a Pulley,groove, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-141-8688 has 2 manufacturer part numbers on file: 5428644 (Amz Alabama Inc.), 5428644 (Naval Sea Systems Command).
Key specifications for 5428644: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.750 INCHES NOMINAL AA END IN; Bore Feature: NOT INCLUDED; Split Hub Feature: NOT INCLUDED. 19 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.