The Gear,spur, cataloged under National Stock Number 3020-01-138-5158, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-138-5158 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.750 INCHES BOTH ENDS0.750 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.562 INCHES SECOND END1.562 INCHES SECOND END IN |
| Teeth Quantity | 3737 |
| Body Style | PLAIN, SOLIDPLAIN, SOLID |
| Bore Style | PLAIN BOTH ENDSPLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 COUNTERBORED TRANSVERSELY THROUGH HUB FIRST END1 COUNTERBORED TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.062 INCHES SECOND END0.062 INCHES SECOND END IN |
| Nominal Distance Between Body Face and Protruding Hub End | 2.031 INCHES FIRST END2.031 INCHES FIRST END IN |
| Mounting Hole Nominal Diameter | 0.250 INCHES TRANSVERSELY THROUGH HUB FIRST END0.250 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Style Designator | PROTRUDING HUBSPROTRUDING HUBS |
| Pitch Diameter | 3.0833 INCHES NOMINAL3.0833 INCHES NOMINAL IN |
| Tooth Form | STANDARDSTANDARD |
| Hub Style Designator | PLAIN SECOND ENDPLAIN SECOND END |
| Nominal Outside Diameter | 3.250 INCHES3.250 INCHES IN |
| Pressure Angle | 20.0000 DEGREES20.0000 DEGREES |
| Material | STEEL OVERALL |
| Attachment Method | MOUNTING HOLEMOUNTING HOLE |
| Face Nominal Width | 0.344 INCHES0.344 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 |
|---|---|
| B9NN-6A304-D | 3/9 Design control — primary reference U.S. Government activity |
| B9NN-6A304-D | 5/9 Secondary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
NSN 3020-01-138-5158 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-138-5158: Bore Nominal Diameter: 0.750 INCHES BOTH ENDS0.750 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.562 INCHES SECOND END1.562 INCHES SECOND END IN; Teeth Quantity: 3737; Body Style: PLAIN, SOLIDPLAIN, SOLID. 18 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.