KEO 10790 Aircraft Double End Plain Standard Combined Drill and Countersink, 1/4 in Drill - Fraction, 0.25 in Drill - Decimal Inch, 90 deg Included Angle, 118 deg Point Angle, HSS, Bright

• 1/4 in L point
• Drill and chamfer in one pass
• HSS is the most popular general purpose tool steel
• Extra length permits access to hard-to-reach applications
• HSS provides good wear resistance
• 90 deg chamfer is frequently used to seat the underside of metric fasteners
• For producing center holes in components or work pieces with the extra length allowing access to difficult-to-reach areas

For producing center holes in components or workpieces which require machining between centers

Standards/Approval: ISO 9002, 9001:2008

KEO Combined Drill and Countersink | Aircraft Double End Plain Standard | 1/4 in Drill Size - Fraction | 0.25 in Drill Size - Decimal Inch | #7 Point Dia | 5/8 in Body Dia | 3-1/4 in Overall Length | 2 Flutes | Spiral Flute | 5/8 in Shank | Round Shank | 118 deg Point | 90 deg Included Angle | Right Hand Cutting | HSS Cutting Edge | HSS | Bright | Applicable Materials: Steel and Other Ferrous Materials