The Gear,spur, cataloged under National Stock Number 3020-01-408-9979, 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 Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-408-9979 |
| Primary Part Number | 779237-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Keyway Nominal Width | 0.206 INCHES BOTH ENDS IN |
| Bore Nominal Diameter | 0.206 INCHES BOTH ENDS IN |
| Teeth Quantity | 11 |
| Surface Treatment Document and Classification | HS248,CL40,TY A7 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Bore Style | W/ KEYWAY BOTH ENDS |
| Material Document and Classification | HS7650 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 0.4583 INCHES NOMINAL IN |
| Nominal Outside Diameter | 0.563 INCHES IN |
| Nominal Distance From Bore Center to Keyway Bottom | 0.206 INCHES BOTH ENDS IN |
| Surface Treatment | LUBRICANT DRY FILM OVERALL |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL OVERALL |
| 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 |
NSN 3020-01-408-9979 is a Gear,spur, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-408-9979 has 2 manufacturer part numbers on file: 779237-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 779237-1 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 779237-1: Keyway Nominal Width: 0.206 INCHES BOTH ENDS IN; Bore Nominal Diameter: 0.206 INCHES BOTH ENDS IN; Teeth Quantity: 11; Surface Treatment Document and Classification: HS248,CL40,TY A7 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 13 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.