The Gear,internal, cataloged under National Stock Number 3020-01-083-6974, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-083-6974 |
| Item Name | Gear,internal |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.760 INCHES BOTH ENDS IN |
| Teeth Quantity | 84 |
| Second Step Nominal Diameter | 1.378 INCHES FIRST END IN |
| Body Style | WEBBED, OFFSET, WITH LIGHTENING HOLES |
| Third Step Nominal Diameter | 1.500 INCHES FIRST END IN |
| Tooth Direction | RIGHT |
| Bore Style | PLAIN BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 3.340 INCHES BOTH ENDS IN |
| First Step Nominal Length | 0.900 INCHES FIRST END IN |
| Teeth Type | SPUR |
| Nominal Overall Length | 3.440 INCHES IN |
| Second Step Nominal Length | 0.600 INCHES FIRST END IN |
| Style Designator | SOLID BACK RING, PROTRUDING HUB, RECESSED HUB |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 4.2000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 1.312 INCHES FIRST END IN |
| Hub Style Designator | 3 STEPS FIRST END |
| End Nominal Length | 0.780 INCHES FIRST END IN |
| Nominal Outside Diameter | 4.670 INCHES IN |
| End Nominal Diameter | 1.180 INCHES FIRST END IN |
| Pressure Angle | 25.0000 DEGREES |
| Material | STEEL COMP 4340 OVERALL |
| Third Step Nominal Length | 0.060 INCHES FIRST END IN |
| Face Nominal Width | 0.930 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 |
| Reference | Meaning |
|---|---|
| 42292E77 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-083-6974 is a Gear,internal, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-083-6974: Bore Nominal Diameter: 0.760 INCHES BOTH ENDS IN; Teeth Quantity: 84; Second Step Nominal Diameter: 1.378 INCHES FIRST END IN; Body Style: WEBBED, OFFSET, WITH LIGHTENING HOLES. 25 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 3020-01-083-6974 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.