BLANKS FOR ROUND TOOLS

Size List for Round Rods with Helical Coolant Holes

Class Grade ISO code Grain size Binder content TRS Hardness
HRA
Hardness
Hv
Fracture toughness Young's modules
(㎛) (wt%) (GPa) (GPa) (MPa・m1/2) (GPa)
Micro grain AF510 --- 0.5 10.0 4.0 92.4 17.0 8.2 ---
Fine grain AF810 K20 0.8 10.0 3.8 91.4 15.2 9.9 ---

Swipe left or right
to see.

Scroll
Helix Angle Number of OH Grade Diameter Hole diameter Hole pitch Lead allowance
AF510 AF810
15° 2 5.6 0.71 ±0.1 2.5 0/-0.3 54.8 63.0
6.6 0.83 ±0.1 2.5 ±0.2 65.7 75.6
7.6 0.95 ±0.1 3.3 ±0.2 76.7 88.2
8.6 1.06 ±0.1 3.6 ±0.2 87.6 100.8
9.6 1.18 ±0.2 4.2 ±0.2 98.6 113.4
10.6 1.30 ±0.2 4.6 ±0.2 109.6 126.0
11.6 1.30 ±0.2 5.0 ±0.2 120.5 138.6
12.6 1.42 ±0.2 5.4 ±0.2 131.5 151.2
13.6 1.54 ±0.2 5.7 ±0.2 142.4 163.8
14.6 1.66 ±0.2 6.3 ±0.2 153.4 176.4
15.6 1.77 ±0.2 6.9 ±0.2 164.3 189.0
16.6 1.89 ±0.2 7.5 ±0.2 175.3 201.6
30°
for Straight
Drills
2 3.6 0.47 ±0.05 1.5 0/-0.1 15.7 17.0
4.6 0.59 +0.05/-0.1 1.7 0/-0.2 20.9 22.7
5.6 0.71 ±0.1 2.4 0/-0.3 26.2 28.4
6.6 0.83 ±0.1 2.8 ±0.2 31.4 34.0
7.6 0.95 ±0.1 3.2 ±0.2 36.6 39.7
8.6 1.06 ±0.1 3.6 ±0.2 41.9 45.4
9.6 1.18 ±0.2 4.0 ±0.2 47.1 51.0
10.6 1.30 ±0.2 4.4 ±0.2 52.3 56.7
11.6 1.30 ±0.2 4.4 ±0.2 57.5 62.4
12.6 1.42 ±0.2 4.8 ±0.2 62.8 68.1
13.6 1.54 ±0.2 5.2 ±0.2 68.0 73.7
14.6 1.66 ±0.2 5.6 ±0.2 73.2 79.4
15.6 1.77 ±0.2 6.0 ±0.2 78.5 85.1
16.6 1.89 ±0.2 6.4 ±0.2 83.7 90.7
17.6 2.01 ±0.2 6.8 ±0.2 88.9 96.3
1.75 ±0.2 8.5 ±0.2
18.6 2.13 ±0.2 7.2 ±0.2 94.1 102.0
2.00 ±0.2 9.2 ±0.2
19.6 2.28 ±0.2 7.6 ±0.2 99.3 107.7
2.00 ±0.2 9.7 ±0.2
20.6 2.36 ±0.2 8.0 ±0.2 104.6 113.4
2.00 ±0.2 9.9 ±0.2
30°
for Step
Drills
2 3.6 0.23 ±0.05 0.8 -0.1/-0.2 15.7 17.0
0.35 ±0.05 1.2 0/-0.2 15.7 17.0
4.6 0.35 ±0.05 1.2 0/-0.2 20.9 22.7
5.6 0.47 ±0.05 1.5 0/-0.3 26.2 28.4
6.6 0.47 ±0.1 2.0 ±0.2 31.4 34.0
7.6 0.59 ±0.1 2.0 ±0.2 36.6 39.7
8.6 0.71 ±0.1 2.4 ±0.2 41.9 45.4
9.6 0.83 ±0.1 2.8 ±0.2 47.1 51.0
10.6 0.95 ±0.1 3.2 ±0.2 52.3 56.7
11.6 0.95 ±0.1 3.2 ±0.2 57.5 62.4
12.6 1.06 ±0.1 3.6 ±0.2 62.8 68.1
13.6 1.06 ±0.1 3.6 ±0.2 68.0 73.7
14.6 1.18 ±0.2 4.0 ±0.2 73.2 79.4
15.6 1.30 ±0.2 4.4 ±0.2 78.5 85.1
16.6 1.42 ±0.2 4.8 ±0.2 83.7 90.7
42° 2 3.6 0.20 ±0.05 0.5 ±0.05 10.1 10.8
0.14 ±0.03 0.5 0/-0.1 10.1 10.8
30° 3 5.6 0.40 ±0.05 2.8 0/-0.3 26.2 28.4
6.6 0.50 ±0.05 3.4 ±0.2 31.4 34.0
7.6 0.59 ±0.1 4.0 ±0.2 36.6 39.7
8.6 0.65 ±0.1 4.6 ±0.2 41.9 45.4
9.6 0.77 ±0.2 5.3 ±0.2 47.1 51.0
10.6 0.85 ±0.2 6.0 ±0.2 52.3 56.7
11.6 0.94 ±0.2 6.7 ±0.2 57.5 62.4
12.6 1.03 ±0.2 7.4 ±0.2 62.8 68.1
13.6 1.11 ±0.2 8.2 ±0.2 68.0 73.7
14.6 1.20 ±0.2 9.0 ±0.2 73.2 79.4
15.6 1.28 ±0.2 9.8 ±0.2 78.5 85.1
16.6 1.37 ±0.2 10.6 ±0.2 83.7 90.7