The Gear,spur, cataloged under National Stock Number 3020-00-480-8087, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 17 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-480-8087 |
| Primary Part Number | 657939 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.580 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.755 INCHES BOTH ENDS IN |
| Teeth Quantity | 50 |
| Body Style | WEBBED, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.100 INCHES BOTH ENDS IN |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | AMS 6260 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.7762 INCHES NOMINAL IN |
| Tooth Form | SPECIAL |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 16 BOTH ENDS |
| Nominal Outside Diameter | 3.881 INCHES IN |
| Pressure Angle | 22.5000 DEGREES |
| Material | STEEL OVERALL |
| Spline Pitch Diameter | 0.5000 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.200 INCHES IN |
| 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 |
|---|---|
| 657939 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 3020-00-480-8087 is a Gear,spur, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-480-8087 has 1 manufacturer part number on file: 657939 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 657939: Bore Nominal Diameter: 0.580 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.755 INCHES BOTH ENDS IN; Teeth Quantity: 50; Body Style: WEBBED, SOLID. 17 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.