The Gear,bevel, cataloged under National Stock Number 3020-01-221-8937, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 3020-01-221-8937 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Status | ACTIVE |
| Bore Nominal Diameter | 7.000 INCHES BOTH ENDS IN |
| Teeth Quantity | 65 |
| Body Style | WEBBED, SOLID |
| Pitch Angle | 71.7850 DEGREES |
| Bore Style | PLAIN BOTH ENDS |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 1.266 INCHES IN |
| Style Designator | SIDE FACE, HUBLESS |
| Pitch Diameter | 10.8230 INCHES NOMINAL IN |
| Nominal Outside Diameter | 10.9260 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL CORROSION RESISTING OVERALL |
| Body Recess Nominal Depth | 0.1230 INCHES SECOND END IN |
| Body Recess Nominal Depth | 0.3300 INCHES FIRST END IN |
| Face Nominal Width | 1.440 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 |
|---|---|
| SSN593-520-1862474 PIECE 2 | 3/2 Design control — primary reference U.S. Government activity |
| SSN593-520-1862474 | D/9 Drawing number reference only U.S. Government activity |
NSN 3020-01-221-8937 is a Gear,bevel, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
5 possible matches (shared part number, not a government interchangeability claim): 3040-01-221-8955, 3040-01-222-4599, 3020-01-222-4630. Verify interchangeability with system specifications before substitution.
Key specifications for 3020-01-221-8937: Bore Nominal Diameter: 7.000 INCHES BOTH ENDS IN; Teeth Quantity: 65; Body Style: WEBBED, SOLID; Pitch Angle: 71.7850 DEGREES. 15 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.