• Slow Spiral Screw Machine Drills
D452 7 Leaders

Slow Spiral Screw Machine Drills

  • 135° self-centering split point
  • Provide superior wear resistance.
  • For use Stainless Steels, Nickelbased and Titanium Alloys, Aluminium, Cast Iron, Bronze and Magnesium.
SUS. Steel <48HRC
P H M K N S
MG
Uncoated Bright
Drill Helix_ 15
Flute_drill-2Z
Point Angle_135˚
Work Material
P H M K N S
GR1 GR2 GR3 GR4 GR5 GR6 GR7 GR8 GR9 GR10 GR11 GR12 GR13 GR14 GR15 GR16 GR17
Carbon Steel <24HRC
Low-alloyed Steel
<30HRC
Hi-Alloyed Steel
30~38HRC
Hardened Steel
38~48HRC
Hardened Steel
48~56HRC
Hardened Steel
56~68HRC
Hardened Steel
Stainless Steel Cast Iron Aluminium Copper Plastics FRP CFRP Composite Material Graphite Titanium Nickel High Temp Alloys
Product Specification
  • Dc 1/32"~3/4"
  • Dc #53~#26
  • Dc #25~#1
  • Dc A~Z
DC Dec. Equiv. Lc L
h7 Inch Inch Inch
1/32 0.0312 3/8 1-1/8
3/64 0.0469 1/2 1-1/2
1/16 0.0625 5/8 1-5/8
5/64 0.0781 11/16 1-11/16
3/32 0.0938 3/4 1-3/4
7/64 0.1094 13/16 1-3/16
1/8 0.1250 7/8 1-7/8
9/64 0.1406 15/16 1-15/16
5/32 0.1562 1 2-1/16
11/64 0.1719 1-1/16 2-1/8
3/16 0.1875 1-1/8 2-3/16
13/64 0.2031 1-3/16 2-1/4
7/32 0.2188 1-1/4 2-3/8
15/64 0.2344 1-5/16 2-7/16
1/4 0.2500 1-3/8 2-1/2
17/64 0.2656 1-7/16 2-5/8
9/32 0.2812 1-1/2 2-11/16
19/64 0.2969 1-9/16 2-3/4
5/16 0.3125 1-5/8 2-13/16
21/64 0.3281 1-11/16 2-15/16
11/32 0.3438 1-11/16 2-15/16
23/64 0.3594 1-3/4 3-1/16
3/8 0.3750 1-13/16 3-1/8
25/64 0.3906 1-7/8 3-1/4
13/32 0.4063 1-15/16 3-5/16
27/64 0.4219 2 3-3/8
7/16 0.4375 2-1/16 3-7/16
29/64 0.4531 2-1/8 3-9/16
15/32 0.4688 2-1/8 3-5/8
31/64 0.4844 2-3/16 3-11/16
1/2 0.5000 2-1/4 3-3/4
17/32 0.5312 2-3/8 3-7/8
9/16 0.5625 2-1/2 4
5/8 0.6250 2-3/4 4-1/4
3/4 0.7500 3-1/8 5
DC Dec. Equiv. Lc L
h7 Inch Inch Inch
#53 0.0595 1/2 1-1/2
#52 0.0635 11/16 1-11/16
#51 0.0670 11/16 1-11/16
#50 0.0700 11/16 1-11/16
#49 0.0730 11/16 1-11/16
#48 0.0760 11/16 1-11/16
#47 0.0785 3/4 1-3/4
#46 0.0810 3/4 1-3/4
#45 0.0820 3/4 1-3/4
#44 0.0860 3/4 1-3/4
#43 0.0890 3/4 1-3/4
#42 0.0935 3/4 1-3/4
#41 0.0960 13/16 1-13/16
#40 0.0980 13/16 1-13/16
#39 0.0995 13/16 1-13/16
#38 0.1015 13/16 1-13/16
#37 0.1040 13/16 1-13/16
#36 0.1065 13/16 1-13/16
#35 0.1100 7/8 1-7/8
#34 0.1110 7/8 1-7/8
#33 0.1130 7/8 1-7/8
#32 0.1160 7/8 1-7/8
#31 0.1200 7/8 1-7/8
#30 0.1285 15/16 1-15/16
#29 0.1360 15/16 1-15/16
#28 0.1405 15/16 1-15/16
#27 0.1440 1 2-1/16
#26 0.1470 1 2-1/16
DC Dec. Equiv. Lc L
h7 Inch Inch Inch
#25 0.1495 1 2-1/16
#24 0.1520 1 2-1/16
#23 0.1540 1 2-1/16
#22 0.1570 1-1/16 2-1/8
#21 0.1590 1-1/16 2-1/8
#20 0.1610 1-1/16 2-1/8
#19 0.1660 1-1/16 2-1/8
#18 0.1695 1-1/16 2-1/8
#17 0.1730 1-1/8 2-3/16
#16 0.1770 1-1/8 2-3/16
#15 0.1800 1-1/8 2-3/16
#14 0.1820 1-1/8 2-3/16
#13 0.1850 1-1/8 2-3/16
#12 0.1890 1-3/16 2-1/4
#11 0.1910 1-3/16 2-1/4
#10 0.1935 1-3/16 2-1/4
#9 0.1960 1-3/16 2-1/4
#8 0.1990 1-3/16 2-1/4
#7 0.2010 1-3/16 2-1/4
#6 0.2040 1-1/4 2-3/8
#5 0.2055 1-1/4 2-3/8
#4 0.2090 1-1/4 2-3/8
#3 0.2130 1-1/4 2-3/8
#2 0.2210 1-5/16 2-7/16
#1 0.2280 1-5/16 2-7/16
DC Dec. Equiv. Lc L
h7 Inch Inch Inch
A 0.2340 1-5/16 2-7/16
B 0.2380 1-3/8 2-1/2
C 0.2420 1-3/8 2-1/2
D 0.2460 1-3/8 2-1/2
E 0.2500 1-3/8 2-1/2
F 0.2570 1-7/6 2-5/8
G 0.2610 1-7/6 2-5/8
H 0.2660 1-1/2 2-11/16
I 0.2720 1-1/2 2-11/16
J 0.2770 1-1/2 2-11/16
K 0.2810 1-1/2 2-11/16
L 0.2900 1-9/16 2-3/4
M 0.2950 1-9/16 2-3/4
N 0.3020 1-5/8 2-13/16
O 0.3160 1-11/16 2-15/16
P 0.3230 1-11/16 2-15/16
Q 0.3320 1-11/16 3
R 0.3390 1-11/16 3
S 0.3480 1-3/4 3-1/16
T 0.3580 1-3/4 3-1/16
U 0.3680 1-13/16 3-1/8
V 0.3770 1-7/8 3-1/4
W 0.3860 1-7/8 3-1/4
X 0.3970 1-15/16 3-5/16
Y 0.4040 1-15/16 3-5/16
Z 0.4130 2 3-3/8