The Gear,internal, cataloged under National Stock Number 3020-01-193-6774, 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 Oshkosh Defense Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-193-6774 |
| Primary Part Number | 2CK138 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Teeth Quantity | 73 |
| Body Style | PLAIN, SOLID |
| Teeth Type | SPUR |
| Style Designator | PLAIN RING |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE AND AISI/SAE 8620 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 6.7460 INCHES MINIMUM AND 6.7480 INCHES MAXIMUM IN |
| Tooth Form | STANDARD |
| Nominal Outside Diameter | 8.1250 INCHES IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP 8620 OVERALL |
| Face Nominal Width | 3.125 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 |
|---|---|
| 290056 | Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA) |
| 2CK138 PRIMARY | Oshkosh Defense Llc (USA) |
| WLM290056 | Grove U.s. Llc Dba Grove Us Llc (USA) |
| 290056 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2CK138 | 5/9 Secondary reference Oshkosh Corp |
| 290056 | 3/9 Design control — primary reference Grove U.s. Llc Dba Grove Us Llc |
| 9-734100648 | 5/9 Secondary reference Grove U.s. Llc Dba Grove Us Llc |
NSN 3020-01-193-6774 is a Gear,internal, manufactured by Oshkosh Defense Llc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-01-193-6774 has 4 manufacturer part numbers on file: 290056 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 2CK138 (Oshkosh Defense Llc), WLM290056 (Grove U.s. Llc Dba Grove Us Llc), 290056 (Amz Alabama Inc.).
Key specifications for 2CK138: Teeth Quantity: 73; Body Style: PLAIN, SOLID; Teeth Type: SPUR; Style Designator: PLAIN RING. 11 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.