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Product Specifications:
| Item | Long Drill Bit |
| Coolant Fed | Non Coolant Through |
| Cutting Direction | Right Hand |
| Cutting Edge Dia. | 5/16" |
| Cutting Edge Length | 3.78" |
| Decimal Equivalent | 0.3125 |
| Depth X Dia. Ratio | 12xd |
| Drill Bit Point Angle | 130° |
| Drill Bit Point Type | Conical Point |
| Drill Bit Size | 5/16" |
| Drill Dia. Tolerance | H8 |
| Drill Length Class | Extra Long |
| Drill Point Length | 1.85 mm |
| Finish | Bright Uncoated |
| Finish-machining | Bright (Uncoated) |
| Flute Length | 4 9/32" |
| Flute Type | Spiral |
| Grade | General Purpose |
| Length | 6.496" |
| Material | High Speed Steel |
| Material Grade-machining | General Purpose |
| Material-machining | High Speed Steel |
| Max. Drilling Depth | 4 9/32" , 4.281" |
| Measurement System | Fractional Inch |
| No. Of Flutes | 2 |
| Overall Length | 165 mm |
| Point Angle | 130° |
| Point Type | Conical Point |
| Primary Material Application | Cast Iron, Nickel, Stainless Steel, Titanium |
| Primary Material Application Iso Code | K, M, S |
| Shank Dia. | 7.94 mm |
| Shank Length | 56 mm |
| Shank Type | Straight |
| Shank Type-machining | Straight |
| Sheeter Drill | No |
| Size | 0.312" |
| System Of Measurement | Imperial |
Shipping Info:
| Ship weight (kg) | 0.02 |
| Ship height (cm) | 2.54 |
| Ship length (cm) | 16.5 |
| Ship width (cm) | 2.54 |
| Country of Origin | FR |
Product Variants
| Product | Model | Flute Length | Shank Dia. | Max. Drilling Depth | Shank Length | Drill Point Length | Drill Bit Size | Finish-machining | Cutting Edge Length | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
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A1522-NO1 | 3 37/64" | 5.79 mm | 3.578" | 48 mm | 1.35 mm | #1 | Bright (Uncoated) | 3.228" | €42.37 | |
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A1622-NO1 | 5 1/2" | 5.79 mm | 5 1/2" | 65 mm | 1.35 mm | #1 | Bright (Uncoated) | 5.157" | €70.70 | |
![]() |
A1522-NO10 | 3 27/64" | 4.92 mm | 3.422" | 45 mm | 1.15 mm | #10 | Bright (Uncoated) | 3.11" | €29.30 | |
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A1622-NO10 | 5 5/16" | 4.92 mm | 5.312" | 60 mm | 1.15 mm | #10 | Bright (Uncoated) | 5" | €50.53 | |
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A1522-NO11 | 3 27/64" | 4.85 mm | 3.422" | 45 mm | 1.13 mm | #11 | Bright (Uncoated) | 3.11" | €33.33 | |
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A1622-NO11 | 5 5/16" | 4.85 mm | 5.312" | 60 mm | 1.13 mm | #11 | Bright (Uncoated) | 5" | €70.70 | |
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A1544-4.8 | 3 27/64" | 4.8 mm | 3.422" | 1 49/64" | 1.12 mm | #12 | Bright (Uncoated) | 3.11" | €39.40 |
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WALTER TOOLS A1547-5/16IN 5154177 Long Drill Bit, 5/16 Inch Drill Bit Size, 4 9/32 Inch Flute Length, 7.94 mm Shank Dia
€67.62 /unit



