The Pulley,groove, cataloged under National Stock Number 3020-01-440-3703, 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 27 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-440-3703 |
| Primary Part Number | SK464-2 |
| 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 | 7.000 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 3.500 INCHES NOMINAL IN |
| Design Form | WEBBED |
| Web/spoke Relationship to Face Centerline | NOT OFFSET |
| Special Test Features | USED ON ARRANGEMENT-ELEVATOR MACHINERY ROOM NO.7, 02 LEVEL |
| Groove Radius | 0.543 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 20.250 INCHES NOMINAL IN |
| Style Designator | WEBBED OR SPOKED |
| Pitch Diameter | 18.2500 INCHES NOMINAL IN |
| Groove Depth | 1.630 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Protruding Hub Characteristic | PLAIN |
| Unable to Decode | UNABLE TO DECODE |
| Distance From Outside Flange/rim to Hub End and Location | 0.560 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 5.509 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 2.380 INCHES NOMINAL IN |
| Groove Width | 0.500 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 |
|---|---|
| SK464-2 PRIMARY | Naval Sea Systems Command (USA) |
| SK464 ASSY 2 | Naval Sea Systems Command (USA) |
| 772-6361089 REV E IT5 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| SK464 | D/9 Drawing number reference only Naval Sea Systems Command |
| 440-331-431 IT2 | 5/9 Secondary reference U.S. Government activity |
| 440-331-4361 | D/9 Drawing number reference only U.S. Government activity |
| 6361089 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 3020-01-440-3703 is a Pulley,groove, manufactured by Naval Sea Systems Command, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-440-3703 has 3 manufacturer part numbers on file: SK464-2 (Naval Sea Systems Command), SK464 ASSY 2 (Naval Sea Systems Command), 772-6361089 REV E IT5 (Naval Sea Systems Command).
Key specifications for SK464-2: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 7.000 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 27 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.