The Pulley,groove, cataloged under National Stock Number 3020-00-522-3766, 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 The Boeing Company. Government technical data includes 24 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-522-3766 |
| Primary Part Number | 369A8448 |
| Item Name | Pulley,groove |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Integral Cooling Vane | NOT INCLUDED |
| Hub Outside Diameter | 0.500 INCHES NOMINAL BOTH ENDS IN |
| Bore Feature | INCLUDED |
| Split Hub Feature | NOT INCLUDED |
| Bore Length | 0.375 INCHES NOMINAL IN |
| Design Form | PLAIN |
| Groove Radius | 0.052 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Groove Shape | U |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Material Document and Classification | MIL-P-20693, COMP A, TYPE 2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Groove Depth | 0.139 INCHES MINIMUM AND 0.149 INCHES MAXIMUM 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 | 0.063 INCHES NOMINAL BOTH ENDS IN |
| Counterbore Feature | NOT INCLUDED |
| Bore Diameter | 0.313 INCHES NOMINAL IN |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Unable to Decode | UNABLE TO DECODE |
| Face Width | 0.250 INCHES NOMINAL IN |
| Groove Width | 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM 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 |
|---|---|
| 369A8448 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 369A8448 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 3020-00-522-3766 is a Pulley,groove, manufactured by The Boeing Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-522-3766 has 1 manufacturer part number on file: 369A8448 (The Boeing Company).
Key specifications for 369A8448: Integral Cooling Vane: NOT INCLUDED; Hub Outside Diameter: 0.500 INCHES NOMINAL BOTH ENDS IN; Bore Feature: INCLUDED; Split Hub Feature: NOT INCLUDED. 24 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.