Reference Guide

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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

10228