The Pulley,groove, cataloged under National Stock Number 3020-01-101-7512, 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 30 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-101-7512 |
| Primary Part Number | 2590191 |
| 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 |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN |
| Design Form | PLAIN |
| Groove Radius | 19.000 INCHES NOMINAL IN |
| Groove Shape | V |
| Outside Diameter | 3.984 INCHES NOMINAL IN |
| Keying Facility Type | KEYWAY |
| Quantity | 1 |
| Style Designator | WEBBED OR SPOKED |
| Material Document and Classification | QQ-S-681, CLASS 105-85 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.365 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 3 |
| V Groove Angle in Deg | 38.0 |
| Distance From Center of Bore to Bottom of Keyway | 0.882 INCHES MINIMUM AND 0.887 INCHES MAXIMUM IN |
| Keyway Width | 0.1875 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | CADMIUM |
| Distance From Outside Flange/rim to Hub End and Location | 0.136 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.7805 INCHES MINIMUM AND 0.7813 INCHES MAXIMUM IN |
| Material | STEEL COMP 105-85 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Furnished Items | KEYING FACILITY |
| Face Width | 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN |
| Groove Width | 0.188 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 | X |
| Part Number | Manufacturer |
|---|---|
| 2590191 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2590191 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-101-7512 is a Pulley,groove, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-101-7512 has 1 manufacturer part number on file: 2590191 (Naval Sea Systems Command).
Key specifications for 2590191: Integral Cooling Vane: NOT INCLUDED; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED; Bore Length: 1.470 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN. 30 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.