The Gear,internal, cataloged under National Stock Number 3020-01-128-1688, 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 Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-128-1688 |
| Primary Part Number | 181947-1 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
| Status | ACTIVE |
| Hub Spline Quantity | 101 FIRST END |
| Teeth Quantity | 54 |
| Counterbore Nominal Diameter | 2.370 INCHES BOTH ENDS IN |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Teeth Type | SPUR |
| Nominal Overall Length | 1.260 INCHES IN |
| Pitch Diameter | 2.1250 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | EXTERNALLY SPLINED, INVOLUTE SPLINES FIRST END |
| Nominal Outside Diameter | 2.517 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 0.519 INCHES BOTH ENDS IN |
| Face Nominal Width | 0.741 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 |
|---|---|
| 181947-1 PRIMARY | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA) |
| Reference | Meaning |
|---|---|
| 10106670 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 181947 | D/9 Drawing number reference only Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division |
NSN 3020-01-128-1688 is a Gear,internal, manufactured by Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-128-1688 has 1 manufacturer part number on file: 181947-1 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division).
Key specifications for 181947-1: Hub Spline Quantity: 101 FIRST END; Teeth Quantity: 54; Counterbore Nominal Diameter: 2.370 INCHES BOTH ENDS IN; Bore Style: W/COUNTERBORE BOTH ENDS. 14 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.