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  • 6.3mm to 8mm and 7/32" to 5/16" dia.- DIN332 Form R, FormA+B and ANSI 60 degree indexable centre drill

6.3mm to 8mm and 7/32" to 5/16" dia.- DIN332 Form R, FormA+B and ANSI 60 degree indexable centre drill

i-Center Inserts
ANSI 60 degree - 1mm to 3.15mm dia. indexable centre drill_ insert NC2033

  • • NC2033: K20F grade, TiAlN coating.
       For carbon steel, alloy steel, high alloy steel and cast iron.
  • Double ended.
  • Drill Point Dia.: 6.3mm and 8mm ; 7/32" (#6), 1/4" (#7) and 5/16" (#8).
  • Forms are available: DIN 332 form R, A+B and ANSI 60° (60° Countersink angle).
i-Center Holders
We offering two holder type for your option: weldon shank and cylindrical shank with pre-balanced.
● One holder can be used with various type of insert- for various pilot diameter and form of center hole.
● Made of hardened high alloy steel, 58 HRC.
● 20mm dia. shank.
Nine9 20mm shank for center countersink carbide insert
i-Center Inserts
center_drill_type_R
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Part No L1 L2 Ød1 d2 R CT±0.025 IC
I9MT2004R0630 14.63 18.2 6.3 13.2 18.0 28.40 20
I9MT2004R0800 18.63 20.44 8.00 17.0 22.5 28.30 20
i-Center Inserts
center_drill_type_A+B
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Part No L1 L2 Ød1 d2 d3 L3 CT±0.025 IC
I9MT2004B0630 8.0 13.98 6.30 13.2 18.0 15.33 28.4 20
I9MT2004B0800 10.1 17.89 8.00 17.0 20.0 18.73 28.3 20
i-Center Inserts
Combined drills and countersinks
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Part No L1 L2 Ød1 d2 CT±0.025 IC Size
I9MT2004A6 7/32" 11.8mm 7/32" 1/2" 27.75 20 #6
I9MT2004A7 1/4" 14.6mm 1/4" 5/8" 28.5 20 #7
I9MT2004A8 5/16" 17.6mm 5/16" 3/4" 29.0 20 #8
Weldon Shank

● Made of hardened high alloy steel, 58 HRC.

Coolant can be supplied through the center of the holder to increase performance and extend tool life.
Center Drill Countersink Bit

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Part No Insert Size Ød ØD L1 L2 IC
99616-IC20-20F I9MT20 20 32 50 51 20
99616-IC20-3/4F I9MT20 3/4" 32 50 51 20
Cylindrical Shank with Pre-balanced
• Made of hardened high alloy steel, 58 HRC.
• G6.3 / 10,000 r.p.m.

Nine9 indexable center drill_Cylindrical Shank with Pre-balanced
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Part No Insert Size Ød ØD L1 L2 IC
99616-IC20-20B I9MT20 20 32 50 86 20
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