Spiral flute precision drill for plastics. Self-centring with 1-cutter geometry, achieves very high alignment accuracy. Polished helical flutes for optimum chip evacuation.
Maintains the tolerance band IT7 from entry ⌀ through to exit ⌀, due to special point geometry.
Flute length LC = L2 + 1.5 × DC.
Form HB and HE supplied at the same price as HA.
Form HB: order with No.121201 + 129100HB.
Form HE: order with No.121201 + 129100HE.