TAPS AND ROUND DIES
HAND TAPS
MACHINE TAPS
ROUND DIES
ACCESSORIES
 
Strike Taps and Round Dies

All Strike taps and round dies are milled and ground from the solid, and undergo a severe quality control in order to guarantee that they are always up to our customers' expectations.

Both HSS Hand Taps and Machine Taps are made with AISI M2 steel, as well as the Round Dies. Hand Taps are available in 1, 2 or 3 pcs sets; Machine Taps are available in DIN 371 or DIN 376 versions, with flute chamfer form "B" or "C". We offer machine taps with "C" flute chamfer also in the versions 15° right spiral and 35° right spiral.

CO Machine Taps are made with high speed Cobalt AISI M35 steel, so that they can be used to work even the most resistant steels. We offer them also in TiN or TiAln versions, with a coating that improves their performances.

Usually we offer our Taps and Dies with metric thread. Different threads are available on demand.
TAPS AND ROUND DIES DIAMETERS AND RELATIVE LENGTHS
 DIN 352
 ø M2 M2,5 M3 M3,5 M4 M4,5 M5 M6 M7 M8 M9 M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30
 L 36 40 40  45  45 48 48 50 50 56 63  70 70 75 80 80 95 95 100 110 110 132
 E 11 12  12 14 14 16 16 18 18 22 22 25 25  30 32 32 40 40 40 50 50 56
 DIN 371
 ø M2 M2,5 M3 M3,5 M4 M4,5 M5 M6 M7 M8 M9 M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30
 L - - 56 - 63 - 70 80 - 90 - 100 - - - - - - - - - -
 E - - 11 - 13 - 16 19 - 22 - 24 - - - - - - - - - -
 DIN 376
 ø M2 M2,5 M3 M3,5 M4 M4,5 M5 M6 M7 M8 M9 M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30
 L - - 56 - 63 - 70 80 - 90 - 100 - 110 110 110 125 140 140 160 - -
 E - - 11 - 13 - 16 19 - 22 - 24 - 29 30 30 34 34 34 38 - -
 DIN 2181
 ø M2 M2,5 M3 M3,5 M4 M4,5 M5 M6 M7 M8 M9 M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30
 L 38 40 40 45 45 48 48 50 50 56 63 70 70 75 80 80 95 95 100 110 110 132
 E 12 14 16 20 22 24 26 28 34 37 22 25 25 30 32 32 40 40 40 50 50 56
 DIN 223
 ø M2 M2,5 M3 M3,5 M4 M4,5 M5 M6 M7 M8 M9 M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30
D 16 - 20 - 20 - 20 20 25 25 25 30 30 38 38 45 45 45 55 55 65 65
 S* 5 - 5 - 5 - 7 7 9 9 9 11 11 14 14 18 18 18 22 22 25 25
 S** - - 0 - - - - 7 - 9 - 11 - 10 10 14 14 14 16 16 - -
 (*) Coarse Thread
(**) Fine Thread
CUTTING SPECIFICATIONS FOR MACHINE TAPS

 MATERIAL R
(N/mmq)		 REFRIGERANT SPEED
(m/min)
 Non Alloy Steel <600 Emuls/Oil 10 - 15
 Non Alloy Steel 600/700 Emulsion 8 - 12
 Non Alloy Steel 700/900 Oil 6 - 10
 Alloy Steel 700/900 Oil 6 - 10
 High Alloy Steel* 700/1000 Oil 4 - 8
 Mild Cast Iron HB < 200 Oil 15 - 12
 Hard Cast Iron HB > 350 Dry/Oil 5 - 8
 Aluminium - Long Chip 200/400 Emulsion 25 - 30
 Aluminium - Short Chip 250/650 Emulsion 20 - 25
 Silumin Alloy 300/800 Emulsion 10 - 15
 Brass Oil 10 - 25
 Copper 500/1200 Oil 8 - 16
 Nimonic-Hastelloy-Special Alloys 700/1250 Oil 8 - 10
 Hard Rubber  Compressed Air 10 - 20
 Hard Plastic Compressed Air 10 - 18
(*) HSS CO Machine Taps recommended


RECOMMENDED TAPPING DRILL SIZES
 COARSE THREAD
  M2 M2,5 M3 M3,5 M4 M4,5 M5 M6 M7 M8 M9 M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30
 Thread 0,40 0,45 0,50  0,60 0,70 0,75 0,80 1,00 1,00 1,25 1,25 1,50 1,50 1,75 2,00 2,00 2,50 2,50 2,50 3,00 3,00 3,50
 ø 1,60 2,05 2,50 2,90 3,30 3,70 4,20 5,00 6,00 6,80 7,80 8,50 9,50 10,2 12,0 14,0 15,5 17,5 19,5 21,0 24,0 26,5
 FINE THREAD
  M3 M4 M4 M5 M6 M6 M7 M8 M8 M8 M9 M9 M10 M10 M10 M11 M11 M12 M12 M12 M12 M14
 Thread 0,35 0,35 0,50 0,50 0,50 0,75 0,75 0,50 0,75 1,00 0,75 1,00 0,75 1,00 1,25 1,00 1,25 0,75 1,00 1.25 1,50 1,00
 ø 2,65 3,65 3,50 4,50 5,50 5,20 6,20 7,50 7,20 7,00 8,20 8,00 9,20 9,00 8,80 10,0 10,8 10,2 11,0 10,8 10,5 13,0
  M14 M14 M16 M16 M18 M18 M18 M20 M20 M20 M22 M22 M22 M24 M24 M24 M27 M27 M30 M30    
 Thread 1,25 1,50 1,00 1,50 1,00 1,50 2,00 1,00 1,50 2,00 1,00 1,50 2,00 1,00 1,50 2,00 1,50 2,00 1,50 2,00    
 ø 12,8 12,5 15,0 14,5 17,0 16,5 16,0 19,0 18,5 18,0 21,0 20,5 20,0 23,0 22,5 22,0 25,5 25,0 28,5 28,0    


DIES EXTERNAL THREAD
 COARSE THREAD
  M2 M2,5 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30
 Thread 0,40 0,45 0,50 0,70 0,80 1,00 1,00 1,25 1,25 1,50 1,50 0,75 2,00 2,00 2,50 2,50 2,50 3,00 3,00 3,50
 ø 1,93 2,43 2,92 3,91 4,90 5,88 6,88 7,87 8,87 9,85 10,85 11,83 13,82 15,82 17,79 19,79 21,79 23,77 26,77 29,73
 FINE THREAD
  M6 M7 M8 M8 M9 M9 M10 M10 M10 M10 M11 M11 M12 M12 M12 M12 M14 M14
 Thread 0,75 0,75 0,75 1,00 0,75 1,00 0,50 0,75 1,00 1,25 1,00 1,25 0,75 1,00 1,25 1,50 1,00 1,25
 ø 5,90 6,90 7,90 7,83 8,93 8,88 9,93 9,90 9,88 9,86 10,88 10,86 11,90 11,88 11,86 11,85 13,88 13,86
  M14 M16 M16 M18 M18 M20 M22 M24 M24 M27 M27 M30 M30
 Thread 1,50 1,00 1,50 1,50 2,00 1,50 1,50 1,50 2,00 1,50 2,00 1,50 2,00
 ø 13,85 15,88 15,85 17,85 17,82 19,85 21,85 23,85 22,82 25,85 26,82 29,85 29,82