The Gear,spur, cataloged under National Stock Number 3020-01-340-6007, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3020-01-340-6007 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 40.0 MILLIMETERS BOTH ENDS MM |
| Teeth Quantity | 59 |
| Body Style | PLAIN, WITH LIGHTENING HOLES |
| Bore Style | PLAIN BOTH ENDS |
| Precision Classification | ACCURACY GRADE 10 |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | HUBLESS, RECESSED BODY |
| Material Document and Classification | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 118.0 MILLIMETERS NOMINAL MM |
| Nominal Outside Diameter | 122.0 MILLIMETERS MM |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4130 OVERALL |
| Body Recess Nominal Depth | 6.5 MILLIMETERS BOTH ENDS MM |
| Face Nominal Width | 20.0 MILLIMETERS MM |
| 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 |
|---|---|
| 3D72134PK | D/9 Drawing number reference only U.S. Government activity |
| 3D72134PK-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-01-340-6007 is a Gear,spur, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
Key specifications for 3020-01-340-6007: Bore Nominal Diameter: 40.0 MILLIMETERS BOTH ENDS MM; Teeth Quantity: 59; Body Style: PLAIN, WITH LIGHTENING HOLES; Bore Style: PLAIN BOTH ENDS. 14 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.