The Gear Sector,spur, cataloged under National Stock Number 3020-00-976-5316, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-976-5316 |
| Item Name | Gear Sector,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.000 INCHES COUNTERBORE FIRST END IN |
| Teeth Quantity | 72 |
| Nominal Outside Radius | 3.043 INCHES IN |
| Counterbore Nominal Diameter | 0.137 INCHES COUNTERBORE FIRST END IN |
| Bore Style | W/COUNTERBORE COUNTERBORE FIRST END |
| Mounting Hole Type and Quantity | 4 THREADED AND 5 PLAIN AND 10 THREADED AND 2 PLAIN AND 1 PLAIN AXIALLY THROUGH BODY FIRST END |
| Precision Classification | QUALITY NUMBER 10 OR QUALITY NUMBER 11 |
| Mounting Hole Nominal Diameter | 0.189 INCHES AND 0.135 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Hardness Rating | 20.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | HUBLESS |
| Tooth Form | STANDARD |
| Mounting Hole Nominal Thread Size | 0.138 INCHES AND 0.172 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Arc Nominal Length | 9.425 INCHES IN |
| Pitch Radius | 3.0000 INCHES NOMINAL IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| Counterbore Nominal Depth | 2.512 INCHES COUNTERBORE FIRST END IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.560 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 |
|---|---|
| 199-11016 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-976-5316 is a Gear Sector,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-976-5316: Bore Nominal Diameter: 2.000 INCHES COUNTERBORE FIRST END IN; Teeth Quantity: 72; Nominal Outside Radius: 3.043 INCHES IN; Counterbore Nominal Diameter: 0.137 INCHES COUNTERBORE FIRST END IN. 20 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.