The Pulley,groove, cataloged under National Stock Number 3020-01-485-5116, 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 28 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-485-5116 |
| Primary Part Number | 6931019 ITEM 2 |
| 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 | 3.0000 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.7500 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.2100 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 5.5000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-S-763, CLASS 304 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.8445 INCHES NOMINAL IN |
| Groove Depth | 0.3450 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Counterbore Depth | 0.1200 INCHES NOMINAL IN |
| Groove Quantity | 1 |
| Counterbore Location | BOTH ENDS |
| Counterbore Diameter | 2.7070 INCHES NOMINAL IN |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.0620 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | INCLUDED |
| Bore Diameter | 2.6870 INCHES NOMINAL IN |
| Material | STEEL COMP 304 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.6250 INCHES NOMINAL IN |
| Groove Width | 0.2100 INCHES NOMINAL 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 | S |
| Part Number | Manufacturer |
|---|---|
| 6931019-2 | Naval Sea Systems Command (USA) |
| 6931019 ITEM 2 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6931019 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-485-5116 is a Pulley,groove, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-485-5116 has 2 manufacturer part numbers on file: 6931019-2 (Naval Sea Systems Command), 6931019 ITEM 2 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-485-9086. Verify interchangeability with system specifications before substitution.
Key specifications for 6931019 ITEM 2: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 3.0000 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 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.