The Gear,bevel, cataloged under National Stock Number 3020-00-780-5441, 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 Westinghouse Electric Corp. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3020-00-780-5441 |
| Primary Part Number | 54B3106H04 |
| Item Name | Gear,bevel |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Bore Nominal Diameter | 0.250 INCHES BOTH ENDS IN |
| Hub Nominal Diameter | 0.625 INCHES SECOND END IN |
| Teeth Quantity | 40 |
| Body Style | PLAIN, SOLID |
| Pitch Angle | 65.8125 DEGREES |
| Bore Style | PLAIN BOTH ENDS |
| Mounting Hole Type and Quantity | 1 PLAIN AND 1 THREADED TRANSVERSELY THROUGH HUB SECOND END |
| Nominal Distance Between Body Face and Protruding Hub End | 0.250 INCHES SECOND END IN |
| Mounting Hole Nominal Diameter | 0.089 INCHES TRANSVERSELY THROUGH HUB SECOND END IN |
| Teeth Type | STRAIGHT |
| Nominal Overall Length | 0.490 INCHES IN |
| Style Designator | PERIPHERAL FACE, BACK HUB PROTRUDING |
| Material Document and Classification | MIL-B-994 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 1.2500 INCHES NOMINAL IN |
| Hub Style Designator | PLAIN SECOND END |
| Mounting Hole Nominal Thread Size | 0.138 INCHES TRANSVERSELY THROUGH HUB SECOND END IN |
| Nominal Outside Diameter | 1.2750 INCHES IN |
| Pressure Angle | 20.0000 DEGREES |
| Material | COPPER ALLOY OVERALL |
| Mounting Hole Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) TRANSVERSELY THROUGH HUB SECOND END |
| Attachment Method | MOUNTING HOLE |
| Body Recess Nominal Depth | 0.1250 INCHES FIRST END IN |
| Face Nominal Width | 0.187 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 |
|---|---|
| 54B3106H04 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 54B3106H04 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3020-00-780-5441 is a Gear,bevel, manufactured by Westinghouse Electric Corp, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-780-5441 has 1 manufacturer part number on file: 54B3106H04 (Westinghouse Electric Corp).
Key specifications for 54B3106H04: Bore Nominal Diameter: 0.250 INCHES BOTH ENDS IN; Hub Nominal Diameter: 0.625 INCHES SECOND END IN; Teeth Quantity: 40; 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.
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.