35-511

35-511 straight flute step drill bit for precise, repetitive drilling through the toughest materials including brass, carbon steel, cast iron, stainless steel, and more. This tough and reliable tool is constructed with a rugged titanium nitride exterior coating for protection, edge retention and corrosion resistance. Each step is gradually blended to ease stepping through hole sizes; reducing the need to keep changing drill bits. Split point design eliminates the need for a starter hole or punch and delivers three times faster starts, saving valuable time. The double-fluted design provides balanced cuts, more cutting surface compared to a single flute design, and cooler operation.

• Titanium nitride coating dramatically extends bit life
• Split-point tip lasts longer and starts faster than competition
• Unique double-fluted design for balanced cuts and cooler operation
• Shanks are 1inch in length, shank diameter is 5/16inch
• Radius blended, multi diameter steps for smooth drilling
• Number of steps are 13, step increments is 1/32inch
• Minimum drill diameter is 1/8inch, maximum drill diameter is 1/2inch
• Step thickness is 1/8inch