# Tapered End Mill, 4 Deg, 0.250" Tip Dia, Dimension Type: Fractional Inch

**Manufacturer:** Conical Tool  
**MPN:** `B-409`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | Conical Tool |
| Manufacturer name | Conical Tool |
| Manufacturer | Conical Tool, Conical Tool Company |
| DimensionUnit | inch |
| Extra Product Name | Tapered End Mill, 4 Deg, 0.250" Tip Dia, Dimension Type: Fractional Inch |
| UnitOfMeasure | EA |
| Weight | 0.13, 0.149999999874211410, 0.14999999987421142 |
| WeightUnit | lbs |
| cali_prop65_orglabel | False |
| cali_prop65_whtlabel | False |
| countryOfOrigin | US |
| extendedLead | 12 |
| extendedQty | -2 |
| height | 0.63 |
| length | 5.31 |
| moq | 1 |
| MPN | B-409 |
| multiple | 1 |
| qtyInStock | 0 |
| SKU | G9191540 |
| tierMinQty1 | 1 |
| tierPrice1 | 59.02 |
| url | https://www.zoro.com/conical-tool-tapered-end-mill-4-deg-0250-tip-dia-dimension-type-fractional-inch-b-409/i/G9191540/ |
| width | 0.63 |
| Part Number | B-409 |
| Model | B-409 |
| Product Group | BISS |
| Material - Machining | Premium High Speed Steel |
| End Mill Cutting Type | Center Cutting |
| Taper Angle Per Side | 2.0 Degrees |
| Length of Cut | 2 1/4 in |
| Overall Length | 4 1/4 in |
| Number of Flutes | 3 |
| Shank Dia | 1/2 in |
| Finish | Bright (Uncoated) |
| Tip Diameter | 0.250" |
| End Mill Material | High Speed Steel |
| Item | Tapered End Mill |
| Shank Type | Single Weldon |
| Cutting Direction | Right Hand |
| Helix Angle | 30 Degrees |
| Spiral Direction | Right Hand |
| Large End Dia | 0.407 in |
| Dimension Type | Fractional Inch |
| Included Angle | 4 Degrees |
| Taper Angle per Side | 2.0 Degrees |
| Series | THX |
| End Type- Holemaking | Square End |
| Country of Origin (subject to change) | United States |
| ASIN | B019MQ6H2C |
| AdultProduct | False |
| Asin | B019MQ6H2C |
| Autographed | False |
| Batteries_required | False |
| Binding | Tools & Home Improvement |
| Brand | Conical Tool, Conical Tool Company |
| Bullet_point | Multi-flute, three and four flute design allows for proper chip evacuation through a variety of materials and applications while maximizing machine performance when possible, Premium high speed steel  |
| Case | 1 |
| Cat | Industrial & Scientific |
| CatId | 16310091 |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Zoro | G9191540 | 59.02 | 1 | None | 1 |
| Grainger | 39VH96 |  |  | None | 1 |
| AmazonSC | B019MQ6H2C |  |  | None | 1 |
| Zoro | G0141130 | 40.54 | 1 | None | 1 |
| Suncoast Tools | B-409 | 45.18 | 1 | None | 1 |

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Structured data: `/python/html6/product/500/103500000/103676000/part_--B409---ConicalTool--a1e6187773.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp