The Gear,spur, cataloged under National Stock Number 3020-00-758-0346, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 21 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-758-0346 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 2.350 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 3.030 INCHES SECOND END IN |
| Hub Nominal Diameter | 3.330 INCHES FIRST END IN |
| Nominal Distance Between Body Face and Recessed Hub End | 0.125 INCHES SECOND END IN |
| Teeth Quantity | 64 |
| Body Style | WEBBED, WITH LIGHTENING HOLES |
| Bore Style | INVOLUTE SPLINE BOTH ENDS |
| Nominal Distance Between Body Face and Protruding Hub End | 0.570 INCHES FIRST END IN |
| Hardness Rating | 58.0 ROCKWELL C MINIMUM AND 62.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Overall Length | 1.845 INCHES IN |
| Style Designator | ONE PROTRUDING HUB, ONE RECESSED HUB |
| Material Document and Classification | MIL-S-13048 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 8.0000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Hub Style Designator | PLAIN BOTH ENDS |
| Spline Quantity | 37 BOTH ENDS |
| Nominal Outside Diameter | 8.247 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 8620 OR STEEL COMP 4620 OR STEEL COMP 4820 OR STEEL COMP 8720 OVERALL |
| Spline Pitch Diameter | 2.3125 INCHES NOMINAL BOTH ENDS IN |
| Face Nominal Width | 1.150 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 |
|---|---|
| XV09-004-20 | 3/9 Design control — primary reference Project Manager Amphibious Lighters St Louis Mo |
| C8004-09-004FN20 | 5/2 Secondary reference U.S. Government activity |
| B8004-09-004FN20 | 5/2 Secondary reference U.S. Government activity |
| B8004-09-004-20 | 5/2 Secondary reference U.S. Government activity |
NSN 3020-00-758-0346 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-00-758-0346: Bore Nominal Diameter: 2.350 INCHES BOTH ENDS IN; Hub Nominal Diameter: 3.030 INCHES SECOND END IN; Hub Nominal Diameter: 3.330 INCHES FIRST END IN; Nominal Distance Between Body Face and Recessed Hub End: 0.125 INCHES SECOND END IN. 21 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.