Type 657 Fractional
Tools - Drills - Coolant Fed Drills - Coolant Fed Twist Drills, Long Length, 135° Split Point

Chip ClassMaterial MachinedTool Type
20NON-FERROUS – LONG CHIPS656
40 NON-FERROUS – SHORT CHIPS656
60CAST IRONS656
100MEDIUM STRENGTH STEELS657
120HIGH STRENGTH STEELS657
Discontinued, While Supplies Last.

Description

  • Long length
  • Polished right spiral flutes
  • 135º cam relieved split point designed for drilling though abrasive or high tensile materials
  • Two coolant outlets
  • Shank & body diameter same size as tool diameter
  • Shank and tool diameter tolerances: plus .000", minus .001"
  • Carbide high temperature brazed to hardened tool steel body
  • Extra heavy web for higher torsional strength and rigidity
  • Spiral flutes for improved chip removal in vertical applications

Modifications

  • Modified tool diameter
  • Metric tool diameter
  • Modified point and / or angle
  • Flat(s) on shank
  • Tanged shank
Coatings available:
  • TITANIUM NITRIDE - TiN
  • TITANIUM CARBONITRIDE - TiCN
  • ZIRCONIUM NITRIDE - ZrN
  • AL TITANIUM NITRIDE - AITiN

Use

  • For drilling most materials, including some stainless steels and high temperature alloys
  • For deep holes, up to approximately 8 tool diameters deep
Decimal DiameterFractional DiameterFlute LengthOverall LengthEDPPrice
0.687511/1669 1/465744 $454.65
0.718823/326 3/169 1/265746 $466.40
0.75003/46 3/89 3/465748 $468.90
0.531217/325 1/4865734
0.56259/165 3/88 1/465736
0.593819/325 5/88 1/265738 $399.10
0.62505/85 3/48 3/465740 $399.10
0.656221/325 7/8965742 $424.50
0.37503/84 1/46 3/465724 $279.30
0.406213/324 3/8765726 $299.70
0.43757/164 5/87 1/465728 $299.70
0.468815/324 7/87 1/265730
0.50001/257 3/465732
0.25001/43 3/46 1/865716 $283.85
0.28129/323 7/86 1/465718 $279.30
0.31255/1646 3/865720
0.343811/324 1/86 1/265722 $279.30
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