The Gear,spur, cataloged under National Stock Number 3020-00-480-5146, 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 Bendon Gear and Machine, Inc. Government technical data includes 26 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3020-00-480-5146 |
| Primary Part Number | 481242-1 |
| Item Name | Gear,spur |
| FSC / FSG | 3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain |
| Manufacturer | Bendon Gear and Machine, Inc |
| Status | ACTIVE |
| Bore Nominal Diameter | 4.880 INCHES COUNTERBORE FIRST END IN |
| Hub Nominal Diameter | 5.250 INCHES FIRST END IN |
| Teeth Quantity | 132 |
| Surface Treatment Document and Classification | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Style | PLAIN, SOLID |
| Counterbore Nominal Diameter | 5.753 INCHES COUNTERBORE FIRST END IN |
| Flange Nominal Thickness | 0.380 INCHES IN |
| Flange Nominal Diameter | 7.750 INCHES IN |
| Bore Style | W/COUNTERBORE COUNTERBORE FIRST END |
| Mounting Hole Type and Quantity | 8 COUNTERBORED AXIALLY THROUGH FLANGE |
| Mounting Hole Nominal Diameter | 0.290 INCHES AXIALLY THROUGH FLANGE IN |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | FLANGED END |
| Material Document and Classification | QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Pitch Diameter | 5.5000 INCHES NOMINAL IN |
| Tooth Form | STANDARD |
| Nominal Distance Between Outer Body Face and Inner Flange Face | 0.620 INCHES IN |
| Hub Style Designator | PLAIN FIRST END |
| Nominal Outside Diameter | 5.580 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Pressure Angle | 20.0000 DEGREES |
| Material | STEEL COMP 416 OVERALL |
| Bolt Hole Circle Nominal Diameter | 6.625 INCHES AXIALLY THROUGH FLANGE IN |
| Counterbore Nominal Depth | 0.140 INCHES COUNTERBORE FIRST END IN |
| Attachment Method | MOUNTING HOLE |
| Face Nominal Width | 0.380 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 |
|---|---|
| 481242-1 PRIMARY | Bendon Gear and Machine, Inc (USA) |
| Reference | Meaning |
|---|---|
| 481242-1 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 3020-00-480-5146 is a Gear,spur, manufactured by Bendon Gear and Machine, Inc, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
NSN 3020-00-480-5146 has 1 manufacturer part number on file: 481242-1 (Bendon Gear and Machine, Inc).
Key specifications for 481242-1: Bore Nominal Diameter: 4.880 INCHES COUNTERBORE FIRST END IN; Hub Nominal Diameter: 5.250 INCHES FIRST END IN; Teeth Quantity: 132; Surface Treatment Document and Classification: MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 26 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.