The Pulley,groove, cataloged under National Stock Number 3020-00-458-2438, 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 Corp Div Space. Government technical data includes 27 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-458-2438 |
| Primary Part Number | 66C49471P1 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Lockheed Martin Corp Div Space |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.510 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.620 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.120 INCHES NOMINAL IN |
| Groove Shape | U |
| Standard V-Belt Section Designation for Which Designed | NOT DESIGNED FOR STD V-BELT |
| Outside Diameter | 1.450 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | QQ-A-225/6, T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.415 INCHES NOMINAL IN |
| Bore Type | STRAIGHT |
| Bearings | NOT INCLUDED |
| Groove Quantity | 1 |
| Unable to Decode | UNABLE TO DECODE |
| Surface Treatment | ANODIZE |
| Distance From Outside Flange/rim to Hub End and Location | 0.030 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.250 INCHES MINIMUM AND 0.256 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.560 INCHES NOMINAL IN |
| Groove Width | 0.340 INCHES NOMINAL IN |
| Nuclear Hardness Critical Feature | HARDENED |
| Lightening Hole | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | H |
| Part Number | Manufacturer |
|---|---|
| 66C49471P1 PRIMARY | Lockheed Martin Corp Div Space (USA) |
| Reference | Meaning |
|---|---|
| 66C49471P1 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Aerostructures |
NSN 3020-00-458-2438 is a Pulley,groove, manufactured by Lockheed Martin Corp Div Space, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-458-2438 has 1 manufacturer part number on file: 66C49471P1 (Lockheed Martin Corp Div Space).
Key specifications for 66C49471P1: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.510 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.
NSN 3020-00-458-2438 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.