HIGH SPEED CENTER DRILLS

Combined drills and countersinks are used when locating an accurate center hole is required to assure the precision and quality of subsequent machining operations. 118° Point, Note: Drill Diameter equals Drill Length

Set includes: NO.1,No.2,No.3,No.4,No.5,No.6 and No.7.

#1 Regular HSS Combined Drill Bit and Countersink, Qualtech. Plain type combined drills and countersinks are used to producing center hole in workpieces which require precision drilling or machining between centers. 

SPECS:

• Combined drill and countersink
• Decimal Equivalent:  .0469"
• Size: #1
• Body Diameter: 1/8"
• Length Of Cut:  3/64"
• Drill Diameter and Length: 3/64"
• Overall Length:  1-1/4"
• Direction of Cut:  Right Hand
• Package Quantity: 1
• Size Type:  Inch Size
• Geometry/Tool Specs:  82°Countersink Angle
• Material: High Speed Steel

Combined drills and countersinks, commonly called center drills, are used to produce a center hole on a workpiece for turning between centers.

Center drills are also used to start drilled holes. Because they are very stiff they don't have a tendency to wander.

This center drill is made of ground high speed steel for good wear resistance.

NO.2 High Speed Center Drill 3/16" x 5/64" Plain Type 82 degree. 3/16" body size,5/64" point size

NO.3 High Speed Center Drill 1/4" x 7/64" Plain Type 82 degree. 1/4" body size,7/64" point size

#4 High Speed Center Drill

NO.5 High Speed Center Drill 7/16" x 3/16" Plain Type 82 degree. 7/16" body size,3/16" point size

NO.6 High Speed Center Drill 1/2" x 7/32" Plain Type 82 degree. 1/2" body size,7/32" point size

7 High Speed Center Drill 5/8" x 1/4" Plain Type 82 degree. 5/8" body size,1/4" point size

#8 High Speed Center Drill 3/4" x 5/16" Plain Type 82 degree. 3/4" body size,5/16" point size