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Product Specifications:
| Item | Screw Machine Drill Bit |
| Application | For Alloy And Carbon Steel, Aluminum And Cast Iron |
| Coolant Fed | Non Coolant Through |
| Cutting Direction | Right Hand |
| Decimal Equivalent | 0.3906 |
| Depth X Dia. Ratio | 5xd |
| Drill Bit Dimension Type | Fractional Inch |
| Drill Bit Finish | Bright |
| Drill Bit Grouping | Drill Bit |
| Drill Bit Point Type | 4 Facet Point |
| Drill Bit Size | 25/64" |
| Drill Diameter Tolerance | -0.013 mm to 0 mm |
| Drill Length Class | Screw Machine Length |
| Finish | Bright, Uncoated |
| Finish - Machining | Bright (Uncoated) |
| Flute Length | 2 7/8" |
| Flute Type | Spiral |
| Grade | General Purpose |
| List Number | 220D |
| Material | Solid Carbide |
| Material - Machining | Carbide |
| Material Grade - Machining | General Purpose |
| Max. Drilling Depth | 73 mm |
| Measurement System | Fractional Inch |
| No. Of Pieces | 1 |
| Number Of Flutes | 2 |
| Overall Length | 4 1/2" |
| Primary Material Application | Aluminum, Cast Iron, Hardened Steel, Stainless Steel, Steel |
| Primary Material Application Iso Code | K, N, P |
| Shank Dia. | 0.391" |
| Shank Diameter | 25/64" |
| Shank Length | 41.3 mm |
| Shank Type | Straight |
| Shank Type - Machining | Straight |
| Sheeter Drill | No |
| Standards | Not Rated |
| System Of Measurement | Imperial |
Shipping Info:
| Ship weight (kg) | 0.1 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 2.54 |
| Ship width (cm) | 2.54 |
Product Variants
| Product | Model | Overall Length | Decimal Equivalent | Drill Bit Size | Shank Dia. | Max. Drilling Depth | Price | |
|---|---|---|---|---|---|---|---|---|
![]() |
220-2280 | 2 3/4" | 0.228 | #1 | 0.219" | 44.5 mm | €48.65 | |
![]() |
215-2280 | 2 7/16" | 0.228 | #1 | 0.219" | 33.3 mm | €54.59 | |
![]() |
215-1935 | 2 1/4" | 0.1935 | #10 | 0.188" | 30.2 mm | €45.23 | |
![]() |
220-1935 | 2 1/4" | 0.1935 | #10 | 0.188" | 41.3 mm | €43.87 | |
![]() |
215-1910 | 2 1/4" | 0.191 | #11 | 0.188" | 30.2 mm | €42.86 | |
![]() |
220-1890 | 2 3/4" | 0.189 | #12 | 0.188" | 41.3 mm | €43.32 | |
![]() |
215-1890 | 57 mm | 0.189 | #12 | 4.8 mm | 30.2 mm | €43.70 |
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OSG 220-3906 Screw Machine Drill Bit, 25/64 Inch Size, 4 1/2 Inch Overall Length
€126.71 /unit


