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Drilling tools \ Stepped drill bits
HSS Subland stepped drill bit type N ( DIN 8378 )
For thread core hole with countersink

Typ HA
HSS N
118°
Application: Execution:
For thread core holes in accordance with DIN 336  Drill and countersink step with independent chip l1
and 90° free countersink equivalent to through grooves and drill heels; regrinding does not affect l2

holes in accordance with DIN EN 20273. Counter- the profi le
sink and thread core holes are manufactured in one 90°
machining step. Advantage: d1
 precise alignment of drill diameter and countersink d2
diameter, lower process costs l3
 universal use, therefore tool costs are reduced to a
minimum and user fl exibility is increased

Application Steel (N/mm ) Stainless steel Alu Brass Bronze Plas- Graphite GG(G) Titan- Nickel- Super- Hard mat.
2
No. <700 <1000 <1300 marten. austen. short long short long short long tics G(C)FK GjMW alloy alloy alloy <55 HRC <65 HRC
11106 30 20 40 50 40 35 20 15 20
Suitable for d1 (mm) d2 (mm) l3 (mm) l2 (mm) l1 (mm) Sha Ø (mm) f steel 700  11106...

screw thread (mm/U) Ident. No.
M3 2.5 3.4 8.8 39 70 3.4 0.03 003
M4 3.3 4.5 11.4 47 80 4.5 0.04 004
M5 4.2 5.5 13.6 57 93 5.5 0.06 005
M6 5 6.6 16.5 63 101 6.6 0.08 006
M8 6.8 9 21 81 125 9 0.1 008
Prod. Gr. 1AR

HSS Subland stepped drill bit type N, fine quality grade ( DIN
8374 )
For 90° countersunk screws

Typ HA
HSS
N
118°
Application: Advantage:
For through holes in accordance with DIN EN 20273  precise alignment of drill diameter and countersink l1
and screw head countersinking 90°. diameter, lower process costs l2
Execution:  universal use, therefore tool costs are reduced to a 90°

minimum and user fl exibility is increased

 Drill and countersink step with independent chip d1

grooves and drill heels; regrinding does not affect
the profi le l3 d2

p. 206
Application Steel (N/mm ) 2 Stainless steel Alu Brass Bronze Plas- Graphite GG(G) Titan- Nickel- Super- Hard mat.
No. <700 <1000 <1300 marten. austen. short long short long short long tics G(C)FK GjMW alloy alloy alloy <55 HRC <65 HRC
11100 30 20 40 50 40 35 20 15 20
Suitable for d1 (mm) d2 (mm) l3 (mm) l2 (mm) l1 (mm) Sha Ø (mm) f steel 1000  11100...

screw thread (mm/U) Ident. No.
M3 3.2 6 9 57 93 6 0.15 003
M4 4.3 8 11 75 117 8 0.18 004
M5 5.3 10 13 87 133 10 0.2 005
M6 6.4 11.5 15 94 142 11.5 0.21 006
M8 8.4 15 19 114 169 15 0.23 008
Prod. Gr. 1AR

Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com
Availability subject to country specific rules and regulations. 45

0093_EN_2018_KERN[21841810]-m.indd 93 12/17/2018 3:31:04 PM