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Series J100 - Inch
General purpose drills for steels, cast steel, grey cast iron, malleable cast iron, nickel brass, aluminium alloy and graphite. Point angle: 118, helix angle: normal, web thickness: standard, relief angle: 10-20, tolerance of diameter: h8, tolerance of shank: f11. Manufactured to BS 328/DIN338RN.
Bright Finish
Drills with a bright finish are supplied in the as-ground condition and such tools are used generally in the machining of non-ferrous materials.
| Finish/Coating | Bright |
| Helix Type | Normal Helix |
| Cutting Direction | Right Hand |
| Web Thickness | Standard |
| Flute Length | 63mm |
| Point Angle | 118\u00b0 |
| Drill Diameter | 1/4in |
| Point Type | Split Point |
| Flute Type | Spiral |
| Shank Diameter Tolerance | F11 |
| Standards Met | BS 328 | DIN 338RN |
| Drill Diameter Tolerance | H8 |
| Number of Flutes | 2 |
| Material | HSS |
| Flute Construction | Ground flutes |
| Overall Length | 101mm |
| Coolant Delivery | External |
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