Twist Drill :
High Speed Steel Subland Twist Drills


High Speed Steel Subland Twist Drills
 

Parallel Shank

d2
h8 		d1
h8 		OAL
l-1

FL
I-2

 I-3 Thread
Nominal Diameter Pitch

9.0

6.8

125

81

21.0

M 8

1.25

11.0

8.5

142

94

25.5

M 10

1.5

14.0

10.2

160

108

30.0

M 12

1.75

16.0

12.0

178

120

34.5

M 14

2.0

Taper Shank

d2
h8 		d1
h8 		OAL
l-1

FL
I-2

 I-3 Mt Shank No. Thread
Nominal Diameter Pitch
9 6.8 162 81 21   M 8 1.25
11 8.5 175 94 25.5 1 M 10 1.5
14 10.2 189 108 30   M 12 1.75
16 12.0 218   34.5   M 14 2
18 14.0 228   38.5 2 M 16 2
20 15.5 238   43.5   M 18 2.5
22 17.5 248   47.5   M 20 2.5
24 19.5 281   51.5   M 22 2.5
26 21.0 286 108 56.5 3 M 24 3
30 24.0 296   62.5   M 27 3
33 26.5 334 185 70 4 M30 3.5


Dimension in mm

Specification Conform to ISO 3438 - 1975

FL - Fluted Length,    OAL = Overall Length,    MT = Morse Taper.

Specification conform to IS:7823-1983/ISO 3292-1975

FL=flute length     OAL= overall length


 
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