The Gear,spur, cataloged under National Stock Number 3020-01-101-1663, 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 Drs Training & Control Systems, Llc Dba Leonardo Drs Training & Control Systems, Llc Div Range, Control and Unmanned Systems. Government technical data includes 20 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 | 3020-01-101-1663 |
| Primary Part Number | 77B10128 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Drs Training & Control Systems, Llc Dba Leonardo Drs Training & Control Systems, Llc Div Range, Control and Unmanned Systems |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.120 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.375 INCHES FIRST END IN |
| Teeth Quantity | 30 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 THREADED TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.220 INCHES FIRST END IN |
| Nominal Overall Length | 0.345 INCHES IN |
| Style Designator | PROTRUDING HUB |
| Pitch Diameter | 0.6250 INCHES NOMINAL IN |
| Tooth Form | STUB |
| Hub Style Designator | PINNED FIRST END |
| Mounting Hole Nominal Thread Size | 0.086 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Nominal Outside Diameter | 0.667 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 20 TRANSVERSELY THROUGH HUB FIRST END |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.125 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 |
|---|---|
| 77B10128 PRIMARY | Drs Training & Control Systems, Llc Dba Leonardo Drs Training & Control Systems, Llc Div Range, Control and Unmanned Systems (USA) |
NSN 3020-01-101-1663 is a Gear,spur, manufactured by Drs Training & Control Systems, Llc Dba Leonardo Drs Training & Control Systems, Llc Div Range, Control and Unmanned Systems, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-101-1663 has 1 manufacturer part number on file: 77B10128 (Drs Training & Control Systems, Llc Dba Leonardo Drs Training & Control Systems, Llc Div Range, Control and Unmanned Systems).
Key specifications for 77B10128: Bore Nominal Diameter: 0.120 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.375 INCHES FIRST END IN; Teeth Quantity: 30; Body Style: PLAIN, SOLID. 20 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.