DIN338 hss straight twist drill bits with various surface finish

hss drill bits *Nice finishing, very good out-looking,and good quality *4241,4341,9341,6541,M32 and M42 *ISO 9001 standard

hss twist drill

1.Material:4241,4341,9341,6541,M32 and M422.Fully ground,roll forged and edge forged twist drill

3.Special tip and more sharpness4.Application:More than 5MM stainless steel, spring steel, special steel, hardness of HRC40 within the metal block, opened die punch ect.

5.We have our own factory and so the price is also competitive

METRIC	IMPERIAL
0.3-1.0	1/64 1/32
1.1-1.5	1/16
1.6-2.0	5/64
2.1-2.5	3/32
2.6-3.0	7/64
3.1-3.2	1/8
3.3-3.5	9/64
3.6-4.0	5/32
4.1-4.2
4.3-4.5	11/64
4.6-5.0	3/16
5.1-5.2	13/64
5.3-5.5	7/32
5.6-6.0	15/64
6.1-6.5	1/4
6.6-7.0	17/64
7.1-7.5	9/32 19/64
7.6-8.0	5/16
8.1-8.5	21/64
8.6-9.0	11/32
9.1-9.5	23/64 3/8
9.6-10.0	25/64
10.1-10.5	13/32
10.6-11.0	27/64
11.1-11.5	7/16 29/64
11.6-12.0	15/32
12.1-12.5	31/64
12.6-13.0	1/2

DIN338 hss straight twist drill bits with various surface finish