The Gear,bevel, cataloged under National Stock Number 3020-01-149-6763, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 22 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-01-149-6763 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.997 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.500 INCHES SECOND END IN |
| Teeth Quantity | 30 |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 1.500 INCHES COUNTERBORE FIRST END IN |
| Pitch Angle | 32.0000 DEGREES |
| Tooth Direction | RIGHT |
| Bore Style | STRAIGHT SPLINE SECOND END |
| Bore Style | W/COUNTERBORE FIRST END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.125 INCHES SECOND END IN |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 1.126 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDING |
| Material Document and Classification | 66,AISI/SAE FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 3.7500 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN SECOND END |
| Spline Quantity | 10 SECOND END |
| Nominal Outside Diameter | 3.962 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 4140 OVERALL |
| Counterbore Nominal Depth | 0.376 INCHES COUNTERBORE FIRST END IN |
| Face Nominal Width | 0.750 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 |
|---|---|
| SSN637-501-2159964 PIECE 2 | 3/2 Design control — primary reference U.S. Government activity |
| 77643-42X9 PIECE 2 | 3/2 Design control — primary reference U.S. Government activity |
| 77643-42X9 | D/9 Drawing number reference only U.S. Government activity |
| SSN637-501-2159964 | D/9 Drawing number reference only U.S. Government activity |
| 501-2159964 | D/9 Drawing number reference only U.S. Government activity |
NSN 3020-01-149-6763 is a Gear,bevel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
7 possible matches (shared part number, not a government interchangeability claim): 3020-01-149-6770, 3020-01-149-6771, 3040-01-150-0410. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-149-6763: Bore Nominal Diameter: 0.997 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.500 INCHES SECOND END IN; Teeth Quantity: 30; Body Style: PLAIN, SOLID. 22 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.