The Gear,spur, cataloged under National Stock Number 3020-01-071-2908, 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 Hornet Acquisitionco, Llc Dba Onboard Systems. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-071-2908 |
| Primary Part Number | 42277-544 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Hornet Acquisitionco, Llc Dba Onboard Systems |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.418 INCHES BOTH ENDS IN |
| Teeth Quantity | 19 |
| Body Style | PLAIN, SOLID |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Precision Classification | QUALITY NUMBER 8 |
| Style Designator | HUBLESS |
| Pitch Diameter | 1.3571 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Spline Quantity | 11 BOTH ENDS |
| Nominal Outside Diameter | 1.568 INCHES IN |
| Surface Treatment | CADMIUM OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Spline Pitch Diameter | 0.3438 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 0.122 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 |
|---|---|
| 42277-544 PRIMARY | Hornet Acquisitionco, Llc Dba Onboard Systems (USA) |
| Reference | Meaning |
|---|---|
| 42277D544 | 5/9 Secondary reference U.S. Government activity |
| 42277-544 | 5/9 Secondary reference Goodrich Corporation Dba Trw Lucas Aerospace |
NSN 3020-01-071-2908 is a Gear,spur, manufactured by Hornet Acquisitionco, Llc Dba Onboard Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-071-2908 has 1 manufacturer part number on file: 42277-544 (Hornet Acquisitionco, Llc Dba Onboard Systems).
Key specifications for 42277-544: Bore Nominal Diameter: 0.418 INCHES BOTH ENDS IN; Teeth Quantity: 19; Body Style: PLAIN, SOLID; Bore Style: INVOLUTE SPLINE BOTH ENDS. 15 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.