2010 Full-Line Drill Catalog - Desanto

TolerancesSpecial point geometryand manufacturing tolerancesSpecial point geometry to DIN 1412 (extract; edition 03/01)Form AThinnedchisel edgeForm DPoint groundfor cast ironForm BThinned chisel edge withcorrectedcutting lipsForm EBrad point(center point)Form CSplit pointTwist drill manufacturing tolerances to DIN ISO 286, part 2diameter(nominal size)up to and incl. mmtolerance rangemmh8h70.38 … 0.60 10 70.95 12 83.00 14 106.00 18 1210.00 22 1518.00 27 1830.00 33 21Reference to other relevant standardsDIN 228DIN 1414-1DIN 6580DIN 6581Part 1 machine tapers; Morse tapers andmetric tapers, taper shankDirections for design and use for high speedsteel twist drillsDefinitions of the metal-cutting industry;motions and geometry of the cutting processDefinitions of the metal-cutting industry;Cutting portion reference systems and angles50.00 39 2580.00 46 30120.00 54 35* If you need tolerances other than ISO h8 please let us know. Additionalcharges for closer diameter tolerance see additional charges at the end ofchapter Drilling Tools.The standard descriptions above are given with the permissionfrom the German Standards Institute (DeutschesInstitut für Normung). The most recent editions of thestandard sheets apply and are available in DIN A 4 formatfrom Beuth-Verlag GmbH, D-10787 Berlin.Technical315