The Gear,bevel, cataloged under National Stock Number 3020-00-910-3764, 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 Continental Electronics Corp. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-910-3764 |
| Primary Part Number | B57256-1 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Continental Electronics Corp |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.500 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 1.375 INCHES SECOND END IN |
| Body Style | PLAIN, SOLID |
| Mounting Hole Nominal Diameter | 0.128 INCHES TRANSVERSELY THROUGH HUB FIRST END IN |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 1.187 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDING |
| Pitch Diameter | 1.7500 INCHES NOMINAL IN |
| Nominal Outside Diameter | 1.8700 INCHES IN |
| Material | STEEL OVERALL |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.390 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 |
| Part Number | Manufacturer |
|---|---|
| B57256-1 PRIMARY | Continental Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| L119Y | 5/1 Secondary reference Altra Industrial Motion Corp. |
NSN 3020-00-910-3764 is a Gear,bevel, manufactured by Continental Electronics Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-910-3764 has 1 manufacturer part number on file: B57256-1 (Continental Electronics Corp).
Key specifications for B57256-1: Bore Nominal Diameter: 0.500 INCHES BOTH ENDS IN; Hub Nominal Diameter: 1.375 INCHES SECOND END IN; Body Style: PLAIN, SOLID; Mounting Hole Nominal Diameter: 0.128 INCHES TRANSVERSELY THROUGH HUB FIRST END IN. 12 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.