Conform to IS 7823 - 2005
ISO 3292 - 1995

TWIST DRILLS - Parallel Shank Twist Drills (Extra Long Series)
Size(h8)(mm)Size(h8)(inch)Size(h8) No./LetterSeries1 Flute LengthSeries1 Overall LengthSeries2 Flute LengthSeries2 Overall LengthSeries3 Flute LengthSeries3 Overall LengthSeries4 Flute LengthSeries4 Overall Length
3.00--100160150200----
3.05-31100160150200----
3.10--100160150200----
3.171/8-100160150200----
3.20--100160150200----
3.26-30100160150200----
3.30--100160150200----
3.40--100160150200----
3.45-29100160150200----
3.50--100160150200200250--
3.579/6428100160150200200250--
3.60--100160150200200250--
3.66-27100160150200200250--
3.70--100160150200200250--
3.73-26100160150200200250--
3.80-25100160150200200250--
3.86-24100160150200200250--
3.90--100160150200200250--
3.91-23100160150200200250--
3.975/32-100160150200200250--
3.99-22100160150200200250--
4.00--100160150200200250250315
4.04-21100160150200200250250315
4.09-20100160150200200250250315
4.10--100160150200200250250315
4.20--100160150200200250250315
4.22-19100160150200200250250315
4.30-18100160150200200250250315
4.3711/64-100160150200200250250315
4.39-17100160150200200250250315
4.40--100160150200200250250315
4.50-16100160150200200250250315
4.57-15100160150200200250250315
4.60--100160150200200250250315
4.62-14100160150200200250250315
4.70-13100160150200200250250315
4.763/16-150200200250250315300400
4.80-12150200200250250315300400
4.85-11150200200250250315300400
4.90--150200200250250315300400
4.91-10150200200250250315300400
4.98-9150200200250250315300400
5.00--150200200250250315300400
5.06-8150200200250250315300400
5.10--150200200250250315300400
5.11-7150200200250250315300400
5.1613/64-150200200250250315300400
5.18-6150200200250250315300400
5.20--150200200250250315300400
5.22-5150200200250250315300400
5.30--150200200250250315300400
5.31-4150200200250250315300400
5.40--150200200250250315300400
5.41-3150200200250250315300400
5.50--150200200250250315300400
5.567/32-150200200250250315300400
5.60--150200200250250315300400
5.61-2150200200250250315300400
5.70--150200200250250315300400
5.79-1150200200250250315300400
5.80--150200200250250315300400
5.90--150200200250250315300400
5.94-A150200200250250315300400
5.9515/64-150200200250250315300400
6.00--150200200250250315300400
6.04-B150200200250250315300400
6.10--150200200250250315300400
6.15-C150200200250250315300400
6.20--150200200250250315300400
6.25-D150200200250250315300400
6.30--150200200250250315300400
6.351/4E150200200250250315300400
6.40--150200200250250315300400
6.50--150200200250250315300400
6.53-F150200200250250315300400
6.60--150200200250250315300400
6.63-G150200200250250315300400
6.70--150200200250250315300400
6.7517/64H150200200250250315300400
6.80--150200200250250315300400
6.90-I150200200250250315300400
7.00--150200200250250315300400
7.03-J150200200250250315300400
7.10--150200200250250315300400
7.149/32K150200200250250315300400
7.20--150200200250250315300400
7.30--150200200250250315300400
7.37-L150200200250250315300400
7.40--150200200250250315300400
7.49-M150200200250250315300400
7.50--150200200250250315300400
7.5419/64-200250250315300400--
7.60--200250250315300400--
7.67-N200250250315300400--
7.70--200250250315300400--
7.80--200250250315300400--
7.90--200250250315300400--
7.945/16-200250250315300400--
8.00--200250250315300400--
8.03-O200250250315300400--
8.10--200250250315300400--
8.20-P200250250315300400--
8.30--200250250315300400--
8.3321/64-200250250315300400--
8.40--200250250315300400--
8.43-Q200250250315300400--
8.50--200250250315300400--
8.60--200250250315300400--
8.61-R200250250315300400--
8.70--200250250315300400--
8.7311/32-200250250315300400--
8.80--200250250315300400--
8.84-S200250250315300400--
8.90--200250250315300400--
9.00--200250250315300400--
9.09-T200250250315300400--
9.10--200250250315300400--
9.1323/64-200250250315300400--
9.20--200250250315300400--
9.30--200250250315300400--
9.34-U200250250315300400--
9.40--200250250315300400--
9.50--200250250315300400--
9.523/8-200250250315300400--
9.58-V200250250315300400--
9.60--200250250315300400--
9.70--200250250315300400--
9.80-W200250250315300400--
9.90--200250250315300400--
9.9225/64-200250250315300400--
10.00--200250250315300400--
10.08-X200250250315300400--
10.10--200250250315300400--
10.20--200250250315300400--
10.26--200250250315300400--
10.30--200250250315300400--
10.3213/32-200250250315300400--
10.40--200250250315300400--
10.49-Z200250250315300400--
10.50--200250250315300400--
10.60--200250250315300400--
10.70--200250250315300400--
10.7227/64-200250250315300400--
10.80--200250250315300400--
10.90--200250250315300400--
11.00--200250250315300400--
11.10--200250250315300400--
11.11-2002502503153004007/16--
11.20--200250250315300400--
11.30--200250250315300400--
11.40--200250250315300400--
11.50--200250250315300400--
11.51-20025025031530040029/64--
11.60--200250250315300400--
11.70--200250250315300400--
11.80--200250250315300400--
11.90--200250250315300400--
11.9115/32-200250250315300400--
12.00--200250250315300400--
12.10--200250250315300400--
12.20--200250250315300400--
12.3031/64-200250250315300400--
12.40--200250250315300400--
12.50--200250250315300400--
12.60--200250250315300400--
12.701/2-200250250315300400--
12.80--200250250315300400--
12.90--200250250315300400--
13.00--200250250315300400--
13.10--200250250315300400--
13.20--200250250315300400--
13.30--200250250315300400--
13.40--200250250315300400--
13.50--200250250315300400--
13.60--200250250315300400--
13.70--200250250315300400--
13.80--200250250315300400--
13.90--200250250315300400--
14.00--200250250315300400--


Figures Mentioned in red are for reference only. Ground flutes upto 13 mm and miled flutes above 13 mm.
Range Of Applications:- For difficult drilling conditions in extremely deep holes