... component materials: HSS, cobalt high speed steel, carbide, M2, M35, M42 and G15 2.Straight or ... Basic component materials: HSS, cobalt high speed steel, carbide, M2, M35, M42 and G15Straight or spiral fluteDIN376 ... 371 or factory standardCoating wear life than ordinary tap by 20 to 100%Customized specific requirements for ... scheduling the pieces HSS piral Fluted Tap or Sprial Pointed Tap for Deep Hole