The Gear,bevel, cataloged under National Stock Number 3020-00-073-6918, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is The Boeing Company. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-073-6918 |
| Primary Part Number | 107D1253-3 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Bore Nominal Diameter | 9.800 INCHES COUNTERBORE FIRST END IN |
| Hub Nominal Diameter | 12.180 INCHES FIRST END IN |
| Teeth Quantity | 63 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 11.751 INCHES COUNTERBORE FIRST END IN |
| Pitch Angle | 75.9000 DEGREES |
| Tooth Direction | LEFT |
| Bore Style | W/COUNTERBORE COUNTERBORE FIRST END |
| Mounting Hole Type and Quantity | 24 PLAIN TRANSVERSELY THROUGH HUB FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES SECOND END IN |
| Mounting Hole Nominal Diameter | 0.502 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Teeth Type | SPIRAL |
| Nominal Overall Length | 1.958 INCHES IN |
| Style Designator | SIDE FACE, BACK HUB PROTRUDING |
| Pitch Diameter | 17.6970 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 17.765 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL OVERALL |
| Counterbore Nominal Depth | 0.250 INCHES COUNTERBORE FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 0.823 INCHES FIRST END IN |
| Face Nominal Width | 2.800 INCHES IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 107D1253-3 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 107D1253-2 | 5/9 Secondary reference U.S. Government activity |
| 107D1253-2 | 5/9 Secondary reference The Boeing Company |
NSN 3020-00-073-6918 is a Gear,bevel, manufactured by The Boeing Company, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-073-6918 has 1 manufacturer part number on file: 107D1253-3 (The Boeing Company).
Key specifications for 107D1253-3: Bore Nominal Diameter: 9.800 INCHES COUNTERBORE FIRST END IN; Hub Nominal Diameter: 12.180 INCHES FIRST END IN; Teeth Quantity: 63; Body Style: PLAIN, SOLID. 23 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.
NSN 3020-00-073-6918 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.