The Gear,internal, cataloged under National Stock Number 3020-00-141-8874, 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. Div Actuation Division. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-141-8874 |
| Primary Part Number | 210056300 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Curtiss-Wright Controls, Inc. Div Actuation Division |
| Status | ACTIVE |
| Teeth Quantity | 26 |
| Body Style | PLAIN, SOLID |
| Mounting Hole Type and Quantity | 2 THREADED AXIALLY THROUGH BODY FIRST END |
| Teeth Type | SPUR |
| Nominal Overall Length | 0.312 INCHES IN |
| Style Designator | PLAIN RING |
| Material Document and Classification | MIL-S-869 CLASS A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.6250 INCHES NOMINAL IN |
| Features Provided | CASEHARDENED |
| Mounting Hole Nominal Thread Size | 0.138 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 2.2483 INCHES IN |
| Pressure Angle | 28.0000 DEGREES |
| Material | STEEL OVERALL |
| Bolt Hole Circle Nominal Diameter | 2.000 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| 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 |
|---|---|
| 210056300 PRIMARY | Curtiss-Wright Controls, Inc. Div Actuation Division (USA) |
| 3245687 PRIMARY | Hatch & Kirk, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 81125S41-29533PC37 | 5/9 Secondary reference Naval Sea Systems Command |
| 3245687 | 5/9 Secondary reference General Motors Corp Electro-Motive Div |
| B21-00563 | 5/9 Secondary reference Curtiss-Wright Controls, Inc. Div Actuation Division |
| 81125S41-29533PC37 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-00-141-8874 is a Gear,internal, manufactured by Curtiss-Wright Controls, Inc. Div Actuation Division, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-141-8874 has 2 manufacturer part numbers on file: 210056300 (Curtiss-Wright Controls, Inc. Div Actuation Division), 3245687 (Hatch & Kirk, Inc.).
Key specifications for 210056300: Teeth Quantity: 26; Body Style: PLAIN, SOLID; Mounting Hole Type and Quantity: 2 THREADED AXIALLY THROUGH BODY FIRST END; Teeth Type: SPUR. 16 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.