The Gear,spur, cataloged under National Stock Number 3020-00-445-7983, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 26 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-445-7983 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Teeth Quantity | 80 |
| Surface Treatment Document and Classification | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | WEBBED, WITH LIGHTENING HOLES |
| Nominal Distance Between Body Face and Protruding Hub End | 0.477 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 0.955 INCHES FIRST END IN |
| First Step Nominal Length | 0.281 INCHES SECOND END IN |
| First Step Nominal Length | 0.759 INCHES FIRST END IN |
| Precision Classification | QUALITY NUMBER 10 |
| Hardness Rating | 57.0 ROCKWELL C MINIMUM AND 60.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PROTRUDING HUBS |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 2.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| First Step Nominal Diameter | 0.375 INCHES SECOND END IN |
| First Step Nominal Diameter | 0.375 INCHES FIRST END IN |
| Hub Style Designator | 1 STEP FIRST END |
| Hub Style Designator | 1 STEP SECOND END |
| End Nominal Length | 0.196 INCHES FIRST END IN |
| End Nominal Length | 0.196 INCHES SECOND END IN |
| Nominal Outside Diameter | 2.560 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| End Nominal Diameter | 0.250 INCHES FIRST END IN |
| End Nominal Diameter | 0.250 INCHES SECOND END IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 440C OVERALL |
| Face Nominal Width | 0.250 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 |
| Reference | Meaning |
|---|---|
| 147884-000 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-445-7983 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-445-7983: Teeth Quantity: 80; Surface Treatment Document and Classification: MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Style: WEBBED, WITH LIGHTENING HOLES; Nominal Distance Between Body Face and Protruding Hub End: 0.477 INCHES SECOND END IN. 26 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.