The Gear,spur, cataloged under National Stock Number 3020-01-118-7528, 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25 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-118-7528 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 6.250 INCHES COUNTERBORE FIRST END IN |
| Hub Nominal Diameter | 7.250 INCHES SECOND END IN |
| Teeth Quantity | 120 |
| Body Style | WEBBED, OFFSET, SOLID |
| Counterbore Nominal Diameter | 9.251 INCHES COUNTERBORE FIRST END IN |
| Bore Style | W/COUNTERBORE BOTH ENDS |
| Mounting Hole Type and Quantity | 2 PLAIN AND 2 THREADED AXIALLY THROUGH BODY FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 1.937 INCHES SECOND END IN |
| Mounting Hole Nominal Diameter | 0.078 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Style Designator | CONE SHAPE BODY, PROTRUDING HUB |
| Material Document and Classification | MIL-M-16576 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 12.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN SECOND END |
| Mounting Hole Nominal Thread Size | 0.375 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Nominal Outside Diameter | 12.200 INCHES IN |
| Mounting Hole Thread Quantity Per Inch | 16 AXIALLY THROUGH BODY FIRST END |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY 903 OVERALL |
| Bolt Hole Circle Nominal Diameter | 8.250 INCHES AXIALLY THROUGH BODY FIRST END IN |
| Counterbore Nominal Depth | 0.313 INCHES FIRST END IN |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) AXIALLY THROUGH BODY FIRST END |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 2.875 INCHES FIRST END IN |
| Face Nominal Width | 1.062 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 |
|---|---|
| SSBN598-125-1892329 | D/9 Drawing number reference only U.S. Government activity |
| 9868-108X10 | D/9 Drawing number reference only U.S. Government activity |
| 9868-108X10PC1 | 3/2 Design control — primary reference U.S. Government activity |
| SSBN598-125-189 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| SSBN598-125-1892329PC1 | 5/9 Secondary reference U.S. Government activity |
NSN 3020-01-118-7528 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-118-7528: Bore Nominal Diameter: 6.250 INCHES COUNTERBORE FIRST END IN; Hub Nominal Diameter: 7.250 INCHES SECOND END IN; Teeth Quantity: 120; Body Style: WEBBED, OFFSET, SOLID. 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.
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.