201752 201693 201694 210042 210043 201752010 201752020 201752030 201752040 201752050 201752060 201752070 201752080 697 E H I N H l1 d2 d3 d1 Z 3 I I I I 1587 COUNTERSINKS 90° UNEQUAL PITCH Content 6.3 · 8.3 · 10.4 · 12.4 · 16.5 · 20.5 mm (20 1752) Content 6.3 · 10.4 · 16.5 · 20.5 · 25.0 mm (20 1752) Content 6.3 · 8.3 · 10.4 · 12.4 · 16.5 · 20.5 mm Content 6.3 · 10.4 · 16.5 · 20.5 · 25.0 mm EMPTY SETS FOR SELF ASSEMBLY SETS Alu Steel Stainless Copper, brass, tin Plastics GRP/CRP Grey cast iron APPLICATION Hardox 450 ASP-powder steel BLUE-TEC coated countersink, unequal pitch, DIN 335 type C 90°, 3-flat-shank Hardox 400 Hastelloy, Inconel, exotic materials Unequal pitch Countersinking per DIN 74 Art. d1 mm d3 mm l1 mm d2 mm Z AF BF I 6.3 1.5 45.0 5.0 3 – M 3 I 8.3 2.0 50.0 6.0 3 – M 4 I10.4 2.5 50.0 6.0 3 – M 5 I12.4 2.8 56.0 8.0 3 – M 6 Countersinking per DIN 74 Art. d1 mm d3 mm l1 mm d2 mm Z AF BF I16.5 3.2 60.0 10.0 3 – M 8 I20.5 3.5 63.0 10.0 3 – M 10 I25.0 3.8 67.0 10.0 3 – M 12 I31.0 4.2 71.0 12.0 3 – M 16 PROPERTIES ASP-Powder steel + BLUE-TEC coated Made of powder metallurgy high speed steel. For considerably longer service life than HSS-XE steel. BLUE-TEC coating for a further substantial increase in service life also when machining dry (no/less cooling) Advantages of the extreme unequal pitch: • Excellent surface quality due to reduced vibrations • R eduction of the axial force by 50% and the radial force by 25% results in: – Minimising the cutting force for more tool life – Less machine load for a longer service life – Excellent for hand-operated use • Optimal chip breaking through relief grinding For countersinking in materials: • High-alloyed chromium steel such as stainless (V2A / V4A) • Acid resistant steel • Titanium and titanium alloys • All further steel sorts, cast iron, ... non-ferrous metals where high tool life are desired. 3-flat shank for: – Excellent torque transmission – No slippage in the drill chuck – This results to superior cutting output Cutting data Movie < 1400 N < 900 N > 10% Si 11 Index 10 9 OIL 8 7 6 5 4 3 2 1
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