The Pulley,groove, cataloged under National Stock Number 3020-01-343-3707, 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 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-343-3707 |
| Primary Part Number | 6525837 |
| 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 | 0.375 INCHES NOMINAL AA END IN |
| Bore Feature | INCLUDED |
| Securing Method | SETSCREW |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.406 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.063 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 1.000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Groove Depth | 0.063 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.218 INCHES NOMINAL AA END IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.188 INCHES MINIMUM AND 0.189 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.188 INCHES NOMINAL IN |
| Groove Width | 0.125 INCHES NOMINAL IN |
| Furnished Items and Quantity | 1 SETSCREW |
| Securing Location | AA END |
| 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 |
|---|---|
| 6525837 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 303423-1 | 5/9 Secondary reference Science Applications International Corporation Dba Saic |
NSN 3020-01-343-3707 is a Pulley,groove, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-343-3707 has 1 manufacturer part number on file: 6525837 (Naval Sea Systems Command).
Key specifications for 6525837: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.375 INCHES NOMINAL AA END IN; Bore Feature: INCLUDED; Securing Method: SETSCREW. 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.