The Pulley,groove, cataloged under National Stock Number 3020-01-400-3190, 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 Lockheed Martin Sippican, Inc. Div Communication Division. Government technical data includes 23 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-01-400-3190 |
| Primary Part Number | D501140-1 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Sippican, Inc. Div Communication Division |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 6.180 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 1.730 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.192 INCHES NOMINAL IN |
| Groove Shape | U |
| Outside Diameter | 9.000 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Groove Depth | 0.190 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 | 0.370 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 1.760 INCHES NOMINAL IN |
| Material | PLASTIC OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.990 INCHES NOMINAL IN |
| Groove Width | 0.384 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 |
|---|---|
| D501140-1 PRIMARY | Lockheed Martin Sippican, Inc. Div Communication Division (USA) |
| Reference | Meaning |
|---|---|
| D501140 | D/9 Drawing number reference only Lockheed Martin Sippican, Inc. Div Communication Division |
NSN 3020-01-400-3190 is a Pulley,groove, manufactured by Lockheed Martin Sippican, Inc. Div Communication Division, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-400-3190 has 1 manufacturer part number on file: D501140-1 (Lockheed Martin Sippican, Inc. Div Communication Division).
Key specifications for D501140-1: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 6.180 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 23 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.