Jobber drills with straight shank DIN 338

Shank designs for Morse taper with flat tang
to DIN 228 form B
shank to
DIN 228 form B
size
tol.
a zone b d 1 d 2
≈
d 5
≈
d 6
max.
l 6
0
-1
l 7
max.
r 2
max.
r 3
≈
α
2
MT 0 3.0
MT 1 3.5
MT 2 5.0
MT 3 5.0
MK 4 6.5
MT 5 6.5
MT 6 8.0
-1.2
0
-1.4
0
-1.4
0
-1.7
0
-1.9
0
-1.9
0
-2.3
0
3.9 9.045 9.2 6.1 6.0 56.5 10.5 4 1.0 1°29‘27‘‘
5.2 12.065 12.2 9.0 8.7 62.0 13.5 5 1.2 1°25‘43‘‘
6.3 17.780 18.0 14.0 13.5 75.0 16.0 5 1.6 1°25‘50‘‘
7.9 23.825 24.1 19.1 18.5 94.0 20.0 7 2.0 1°26‘16‘‘
11.9 31.267 31.6 25.2 24.5 117.5 24.0 9 2.5 1°29‘15‘‘
15.9 44.399 44.7 36.5 35.7 149.5 29.0 10 3.0 1°30‘26‘‘
19.0 63.348 63.8 52.4 51.0 210.0 40.0 13 4.0 1°29‘36‘‘
≈ 0.25 x 45°
or R 0.3*)
≈ 0.25 x 45°
or R 0.3*)
Twist drill definition (HSS and carbide)
Type application rake
angle
centre hole acc. to DIN 332, part 1, form B or R*)
*) manufacturer’s option
point
angle
point
grind
N
H
W
FN
FN 500
FU 500
FW
EN
S
IS
V
TS 3
TS 80 U
TS 100 F
TS 100 U
TS 150 GG
for normal machining materials
(e.g. steel, cast steel, grey casting)
for hard, short-chipping materials
(e.g. brass, bronze, elektron metal)
for soft, long-chipping materials
(e.g. Al-alloys, copper)
for normal machining materials
with extra deep holes
for long-chipping, tough materials (e.g. high alloyed steels,
heat treatable and case hardened steels)
for universal applications (e.g. alloyed and unalloyed steels
up to 800 mm2)
for soft, long-chipping materials
with extra deep holes
for short-chipping materials
up to approx. 1200 N/mm2
for tough difficult to machine materials
(e.g. stainless and heat-resistant steels)
for tough, stainless, acid and
heat-resistant steels
for tough difficult to machine materials
(e.g. spring steels)
for the production of holes
with positional and dimensional accuracy
for universal applications
(e.g. GG, GGG, steel up to approx. 1000 N/mm2)
for long-chipping, tough mat. up to approx. 1400 N/mm2
(e.g. heat treatable steels, high-alloyed steels)
for steels up to approx. 1000 N/mm2,
universal applications
for grey cast iron, spheroidal graphite iron,
black malleable cast iron
20°-30° 118° relieved cone
standard point grind
12°-16° 118° relieved cone
standard point grind
35°-40° 130° relieved cone
standard point grind
35° 130° relieved cone
web-thinned chisel edge
20° - 30° 130° relieved cone
special point grind
35° 118° 2-facet
special point grind
35°-40° 130° relieved cone
standard point grind
20°-30° 130° relieved cone
with web thinned from A
35° 130° relieved cone
standard point grind
40° 130° relieved cone
standard point grind
20°-30° 130° relieved cone
web-thinned chisel edge
28° 150° facet grinding
20°-30° 140° relieved cone
with web thinned from F
20°-30° 140° relieved cone
with web thinned from F
25°-35° 140° relieved cone
with web thinned from F
0° (straight
fluted)
120° relieved cone
with web thinned from GG
high speed cutting drills
tungsten carbide drills
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