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Product Specifications:
| Item | Extra Long Drill Bit |
| Aircraft Drill | Yes |
| Coolant Fed | Non Coolant Through |
| Coolant Through | No |
| Cutting Direction | Right Hand |
| Decimal Equivalent | 0.052 |
| Depth Dia. Ratio | 4Xd |
| Depth X Dia. Ratio | 4xd |
| Drill Bit Dimension Type | Wire |
| Drill Bit Finish | Black Oxide |
| Drill Bit Material | High Speed Steel |
| Drill Bit Point Angle | 135° |
| Drill Bit Point Type | Split Point |
| Drill Bit Size | #55 |
| Drill Dia. Tolerance | -0" to +0.0005" |
| Drill Length Class | Extra Long |
| Drill Point Length | 0.0108" |
| Finish | Black Oxide |
| Finish-machining | Black Oxide |
| Flute Length | 7/8" |
| Flute Type | Spiral |
| Grade | Heavy Duty |
| Helix Angle | 28° |
| Left/right Hand | Right |
| List Number | 912 |
| Material | High Speed Steel |
| Material Grade-machining | HIGH PERFORMANCE |
| Material-machining | High Speed Steel |
| Max. Drilling Depth | 7/8" |
| No. Of Flutes | 2 |
| Overall Length | 12" |
| Point Angle | 135° |
| Point Type | Split Point |
| Primary Material Application | Cast Iron, Steel |
| Primary Material Application Iso Code | K, P |
| Shank Dia. | 3/64" |
| Shank Length | 11 1/8" |
| Shank Type | Straight |
| Shank Type-machining | Straight |
| Size | #55 |
| Spiral Direction | Right Hand |
Shipping Info:
| Ship height (cm) | 2.54 |
| Ship length (cm) | 30.7 |
| Ship width (cm) | 2.54 |
| Country of Origin | US |
Product Variants
| Product | Model | Flute Length | Max. Drilling Depth | Shank Length | Shank Dia. | Drill Point Length | Drill Bit Size | Drill Dia. Tolerance | Grade | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
11135 | 2 5/16" | 2 5/16" | 9 11/16" | 3/16" | 0.0396" | #11 | -0" to +0.0007" | Heavy Duty | €23.23 | |
![]() |
11137 | 2 5/16" | 2 5/16" | 9 11/16" | 11/64" | 0.0383" | #13 | -0" to +0.0007" | Heavy Duty | €22.14 | |
![]() |
11147 | 2" | 2" | 10" | 9/64" | 0.0319" | #23 | -0" to +0.0007" | Heavy Duty | €24.45 | |
![]() |
11127 | 2 1/2" | 2 1/2" | 9 1/2" | 13/64" | 0.0441" | #3 | -0" to +0.0007" | Heavy Duty | €27.03 | |
![]() |
11169 | 1 1/8" | 1 1/8" | 17/8" | 5/64" | 0.017" | #45 | -0" to +0.0005" | Heavy Duty | €23.50 | |
![]() |
50471 | 5 1/2" | 5 1/2" | 2 1/2" | 11/64" | 0.0516" | 11/64" | -0" to +0.0007" | General Purpose | €36.77 | |
![]() |
50476 | 5 1/2" | 5 1/2" | 2 1/2" | 13/64" | 0.061" | 13/64" | -0" to +0.0007" | General Purpose | €36.99 |
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CHICAGO-LATROBE 11179 Extra Long Drill Bit, #55 Size, 7/8 Inch Flute Length, 3/64 Inch Shank Dia.
€24.54 /unit


