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APPLICATION OVERVIEW FOR TWIST DRILL BITS

02 0501

NZ. pub. 06/15 ©

ZEBRA

ZEBRA

DIN/Type

338 N

338 N

338

340 N

ANSI

Short

Short-Premium Short

Long

Short

Cutting Material

HSS

HSS

HSCo (5% Co) HSS

HSS

Art. No. Prefix

0624 00 ...

0624 09 ...

0626 ...

0629 ...

8443 980 ...

Field of use

Application

Examples

Sheet steel

St12 - St14

Steel (gen.)

St34 - St70,

Profiled Steel Rods,

Boiler Plates

Special Steels

VA2, VA4,

Acid - Resistant Steels

Stainless Steels

VA2, VA4,

Acid - Resistant Steels

Heat - Resistant

Steels

Cast Iron

Grey, Spheroidol,

Malleable Cast Iron

Titanium

Titanium, Titanium

Alloys

Special Ni-Cr

Alloys

Nimonic

Hastelloy, Inconel, Monel

Plastics - Hard

(Duroplastics)

Bakelite, Pertinax,

Resopal

Plastics - Soft

(Thermoplastics)

PA PE, PP, PVC,

Acrylic Glass, Plexiglass

Non - Ferrous Metals Aluminium

Copper, Brass

Plasterboards

Rigid Boards,

Gypsum Slabs,

Cement - Bound Boards

Wood

Hard and Soft Wood,

Chipboard

Polymer - Based

Materials

Corean, Marlan,

Varicor

Technical Data

Feature

Drilling Depth

Bit Ø

Approx. 5 x

Approx. 5 x

Approx. 4 x

Approx. 5 x

Approx. 5 x

Point Angle

Degree

130

o

118

o

130

o

118

o

135

o

Point Grinding

Shape

Conicol Envelope

with opt. Split Point,

Point Thinning C

Fully Ground

Split Point

Split Point

C

Cone Envelope Split Point

Shaft Diameter

mm

12.7 from Ø 13.0 12.7 from Ø 13.0 12.7 from Ø 13.0 Drill Bit Diameter

Drill Bit Diameter

Surface

Steam Tempered Bright Finish

Bare

Vapour - Tempered Steam Tempered

For Degrees of Strength N/mm

2

<1,000

<1,000

<1,200

<1,000

<1,000

Diameter

mm

0.5 - 20.0

1.0 - 13.0

1.0 - 20.0

2.5 - 10.0

½

-

½

Not suited

Partly suited

Well suited

16