Jobber drills with straight shank DIN 338

Straight shank holders Multiplex
Works Standard
Range of applications
Manufacturing specifications
Countersink angle 90°
Article no. 86740
Step drills for efficient drilling and countersinking
in one operation. Tools require
no regrinding. To replace drill and countersink
blades, simply loosen the clamp
screws.
Step drills for drilling tap holes to DIN
336, sheet 1, and clearance countersinks
for through holes to DIN-ISO 273.
Medium design.
For drilling of steel and cast steel alloyed
and non-alloyed, grey cast iron, malleable
cast iron, spheroidal graphite iron,
bronze, brass.
Point grind: facet ground, suitable
for the indexable insert
Point angle: see interchangeable blades
Web thinned: see interchangeable blades
Helix angle: standard
Web thickness: standard
Web taper: standard
Flute form: wide flutes
Tolerance on Ø: see interchangeable
blades
Surface finish: steam tempered
#d1# 86740
50
R
for
threads
countersink Ø
d 2
mm
drill Ø
d 1
mm
overall length
l 1
mm
flute length
l 2
mm
step length
l 3
mm
B
mm
Code no. –
–
M 12 16 10.2 118 57 30.0 2.5 16.000 ○
M 14 20 12.0 128 69 34.5 2.5 20.000 ○
M 16 21 14.0 133 74 38.5 3.5 21.000 ○
M 18 21 15.5 133 74 38.5 3.5 21.001 ○
M 20 24 17.5 145 88 47.5 3.5 24.000 ○
Torx screws
for step drills step angle 90°
Article no. 86807
for
holder
no.
Torx screws*
for drilling
G
Article no.
unit price
price gr. 50
Torx screws*
for countersinking
G
Article no.
packed in units of
5 pieces
86740 16.000 M 2 x 4 86807 2.000 M 2 x 4 86807 2.000
86740 20.000 M 2 x 4 86807 2.000 M 2.5 x 5 86807 2.500
86740 21.000 M 2.5 x 5 86807 2.500 M 2.5 x 5 86807 2.500
86740 21.001 M 2.5 x 5 86807 2.500 M 2.5 x 5 86807 2.500
86740 24.000 M 2.5 x 7 86807 2.501 M 2.5 x 5 86807 2.500
* Each holder is delivered including 4 Torx screws.
229