The Gear,spur, cataloged under National Stock Number 3020-01-122-7915, 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 Triumph Actuation Systems - Connecticut, Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-122-7915 |
| Primary Part Number | 4202012-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Triumph Actuation Systems - Connecticut, Llc |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 LUBRICANT IMPREGNATED BEARING |
| Bore Nominal Diameter | 0.875 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.000 INCHES SECOND END IN |
| Hub Nominal Diameter | 1.000 INCHES FIRST END IN |
| Teeth Quantity | 28 |
| Body Style | PLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.020 INCHES BOTH ENDS IN |
| Hardness Rating | 52.0 ROCKWELL C MINIMUM AND 55.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | MIL-S-46850,TYPE 3,GRADE 300 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.2728 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Nominal Outside Diameter | 1.353 INCHES IN |
| Pressure Angle | 22.5000 DEGREES |
| Material | STEEL OVERALL |
| Face Nominal Width | 0.500 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4202012-1 PRIMARY | Triumph Actuation Systems - Connecticut, Llc (USA) |
| Reference | Meaning |
|---|---|
| 4202012 | D/9 Drawing number reference only Triumph Actuation Systems - Connecticut, Llc |
| 10106657 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 3020-01-122-7915 is a Gear,spur, manufactured by Triumph Actuation Systems - Connecticut, Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-122-7915 has 1 manufacturer part number on file: 4202012-1 (Triumph Actuation Systems - Connecticut, Llc).
Key specifications for 4202012-1: Furnished Items and Quantity: 1 LUBRICANT IMPREGNATED BEARING; Bore Nominal Diameter: 0.875 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.000 INCHES SECOND END IN; Hub Nominal Diameter: 1.000 INCHES FIRST END IN. 18 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.
NSN 3020-01-122-7915 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.