Metal Drilling
METAL DRILLING
152
Special Purpose Drilling
High Speed Steel Countersinks
Size
Decimal
Equiv.
Flute
Length
Overall
Length
Carded
Item #
Bulk
Item #
1/2"
.5000
3/8"
1-5/8"
12411
5/8"
.6250
7/16"
1-3/4"
12412
3/4"
.7500
1/2"
1-13/16"
12413
Tip is milled and precision-ground to 82-degrees
for countersinking into most machinable
materials.
Engineered with premium high speed steel with
black oxide coating for corrosion resistance.
Features five flutes for reduced vibration.
• 1/4”
round shank
12413
Size
Decimal
Equiv.
Flute
Length
Overall
Length
Carded
Item #
Bulk
Item #
7/64"
.1094
5/8"
1-7/8"
60607
1/8"
.1250
5/8"
2"
60608
9/64"
.1406
5/8"
2"
60609
5/32"
.1563
5/8"
2-1/16"
60610
3/16"
.1875
5/8"
2-3/16"
60612
7/32"
.2188
11/16"
2-3/8"
60614
1/4"
.2500
7/8"
2-1/2"
60616
#11
.1910
11/16"
2-1/4"
61611
#20
.1600
5/8"
2-1/8"
61620
#30
.1285
5/8"
2"
61630
• 135
° split-point tip starts drilling immediately
and eliminates “walking.”
Engineered with premium high speed steel
with black oxide coating for corrosion
resistance.
Drills twice as many holes as a single-end
drill bit.
Applications:
General metal drilling in tight spaces, drilling
sheet metal for rivets and fasteners
Double-End HSS Drill Bits
(
Series 606/616)
10228