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Product Specifications:
| Item | Screw Machine Drill Bit |
| Application | For Drilling Alloy Steel, Carbon Steel, Cast Iron, Tool Steel |
| Coolant Fed | Non Coolant Through |
| Coolant Through | No |
| Cutting Direction | Right Hand |
| Decimal Equivalent | 0.159 |
| Depth X Dia. Ratio | 4xd |
| Drill Bit Dimension Type | Wire |
| Drill Bit Grouping | Drill Bit |
| Drill Bit Point Angle | 135° |
| Drill Bit Point Type | Split Point |
| Drill Bit Size | #21 |
| Drill Length Class | Screw Machine Length |
| Drill Point Length | 0.033" |
| Finish | Tin |
| Flute Length | 1.062" |
| Flute Type | Spiral |
| Grade | Heavy Duty |
| Helix Angle | 28° |
| Material | High Speed Steel |
| Max. Drilling Depth | 1 1/16" |
| No. Of Flutes | 2 |
| No. Of Pieces | 0 |
| Overall Length | 2 1/8" |
| Primary Material Application | Cast Iron, Steel, Tool And Die Steel |
| Primary Material Application Iso Code | K, P |
| Shank Dia. | 0.156" |
| Shank Length | 1.062" |
| Shank Type | Straight |
| Size Included | #21 |
| Spiral Direction | Right Hand |
Shipping Info:
| Ship height (cm) | 2.54 |
| Ship length (cm) | 8.55 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Product Variants
| Product | Model | Decimal Equivalent | Overall Length | Shank Dia. | Drill Bit Size | Max. Drilling Depth | Price | |
|---|---|---|---|---|---|---|---|---|
![]() |
48701 | 0.228 | 2 7/16" | 0.234" | #1 | 1 5/16" | €5.61 | |
![]() |
49071 | 0.228 | 2 7/16" | 0.234" | #1 | - | €15.02 | |
![]() |
48371 | 0.228 | 2 7/16" | 0.234" | #1 | - | €11.75 | |
![]() |
49080 | 0.1935 | 2 1/4" | 3/16" | #10 | - | €12.50 | |
![]() |
48380 | 0.1935 | 2 1/4" | 3/16" | #10 | 1 3/16" | €10.50 | |
![]() |
49081 | 0.191 | 2 1/4" | 3/16" | #11 | - | €12.04 | |
![]() |
48381 | 0.191 | 2 1/4" | 0.188" | #11 | - | €10.40 |
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CHICAGO-LATROBE 48391 Screw Machine Drill Bit, #21 Size, 1 1/16 Inch Flute Length
€9.12 /unit



