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Product Specifications:
| Item | Long Drill Bit |
| Coolant Fed | Non Coolant Through |
| Cutting Direction | Right Hand |
| 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 Diameter 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 | Parabolic |
| Grade | General Purpose |
| Material | High Speed Steel |
| Material - Machining | High Speed Steel |
| Material Grade - Machining | General Purpose |
| Max. Drilling Depth | 4.281" |
| Maximum Drilling Depth | 4 9/32" |
| Measurement System | Fractional Inch |
| Number Of Flutes | 2 |
| Overall Length | 6 31/64" |
| Point Angle | 130° |
| Point Type | Conical Point |
| Primary Material Application | Aluminum, Brass, Bronze, Cast Iron, Copper, Steel |
| Primary Material Application Iso Code | K, N, P |
| Secondary Material Application | Composite, Nickel, Stainless Steel, Titanium |
| Secondary Material Application Iso Code | M, O, S |
| Shank Dia. | 7.93 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) | 16.47 |
| Ship width (cm) | 2.54 |
| Country of Origin | FR |
Product Variants
| Product | Model | Flute Length | Finish | Decimal Equivalent | Flute Type | Max. Drilling Depth | Overall Length | Drill Bit Size | Drill Bit Point Angle | Price | |
|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
A1522-NO1 | 3 37/64" | Bright, Uncoated | 0.228 | Parabolic | 3.578" | 139 mm | #1 | 130° | €42.37 | |
![]() |
A1622-NO1 | 5 1/2" | Bright, Uncoated | 0.228 | Parabolic | 5 1/2" | 205 mm | #1 | 130° | €70.70 | |
![]() |
A1522-NO10 | 3 27/64" | Bright, Uncoated | 0.1935 | Parabolic | 3.422" | 132 mm | #10 | 130° | €29.30 | |
![]() |
A1622-NO10 | 5 5/16" | Bright, Uncoated | 0.1935 | Parabolic | 5.312" | - | #10 | 130° | €50.53 | |
![]() |
A1522-NO11 | 3 27/64" | Bright, Uncoated | 0.191 | Parabolic | 3.422" | 132 mm | #11 | 130° | €33.33 | |
![]() |
A1622-NO11 | 5 5/16" | Bright, Uncoated | 0.191 | Parabolic | 5.312" | 195 mm | #11 | 130° | €70.70 | |
![]() |
A1544-4.8 | 3 27/64" | Bright, Uncoated | 0.189 | Spiral | 3.422" | 132 mm | #12 | 130° | €39.40 |
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Contact us
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We're available Monday through Friday, from 07:30 until 17:00.
WALTER TOOLS A1522-5/16IN Long Drill Bit, 5/16 Inch Drill Bit Size, 4 9/32 Inch Flute Length, 7.93 mm Shank Dia
€63.60 /unit



