Four Flute Core Drills

Designed to size or enlarge existing holes. Can also be supplied with a 180 degree center-cutting point for spot facing.

Sizes

Series TL40 - Taper Length HS

Size  Decimal 
1/8" .1250
3.20mm .1260
3.25mm .1280
#30 .1285
3.30mm .1299
3.40mm .1339
#29 .1360
3.50mm .1378
9/64" .1406
3.60mm .1417
#27 .1440
3.70mm .1457
#26 .1470
3.75mm .1476
#25 .1495
#24 .1520
3.90mm .1535
#23 .1540
5/32" .1562
#22 .1570
4.00mm .1575
#21 .1590
#20 .1610
4.10mm .1614
4.20mm .1654
#19 .1660
4.25mm .1673
# 18 .1695
11/64" .1719
# 17 .1730
# 16 .1770
#15 .1800
4.60mm .1811
# 14 .1820
# 13 .1850
4.75mm .1870
3/16" .1875
#12 .1890
#11 .1910
4.90mm .1929
#10 .1935
#9 .1960
5.00mm .1969
# .1990
#7 .2010
13/64" .2031
#6 .2040
5.20mm .2047
#5 .2055
5.25mm .2067
5.30mm .2087
#4 .2090
5.40mm .2126
#3 .2130
5.50mm .2165
7/32" .2188
5.60mm .2205
#2 .2210
5.70mm .2244
5.75mm .2264
#1 .2280
5.90mm .2323
A .2340
15/64" .2344
6.00mm .2362
B .2380
6.10mm .2402
C .2420
6.20mm .2441
D .2460
6.30mm .2480
1/4" .2500
6.40mm .2520
6.50mm .2559
F .2570
6.60mm .2598
G .2610
6.70mm .2638
17/64" .2656
H .2660
6.80mm .2677
I .2720
7.00mm .2756
J .2770
7.10mm .2795
9/32" .2812
7.20mm .2835
7.25mm .2854
7.30mm .2874
L .2900
7.40mm .2913
M .2950
19/64" .2969
7.60mm .2992
N .3020
7.70mm .3031
7.75mm .3051
7.80mm .3071
7.85mm .3091
7.90mm .3110
5/16" .3125
8.00mm .3150
O .3160
8.10mm .3189
P .3230
8.25mm .3248
8.30mm .3268
21/64" .3281
8.40mm .3307
.3320
8.50mm .3346
8.60mm .3386
R .3390
8.70mm .3425
11/32" .3438
8.75mm .3445
8.80mm .3465
S .3480
8.90mm .3504
9.00mm .3543
T .3580
23/64" .3594
9.20mm .3622
9.25mm .3642
9.30mm .3661
U .3680
9.40mm .3701
9.50mm .3740
3/8" .3750
V .3770
9.60mm .3780
9.70mm .3819
9.75mm .3839
W .3860
9.90mm .3898
25/64" .3906
10.00mm .3937
X .3970
10.20mm .4106
Y .4040
13/32" .4062
10.40mm .4094
Z .4130
10.50mm .4134
10.60mm .4173
27/64" .4219
10.80mm .4252
10.90mm .4291
11.00mm .4331
7/16" .4375
29/64" .4531
15/32" .4688
12.00mm .4724
31/64" .4844
12.50mm .4921
1/2" .5000
13.0mm .5118
33/64" .5156
17/32" .5312
35/64" .5469
14.00mm .5512
9/16" .5625
14.50mm .5709
37/64" .5781
21/32" .6562
17.00mm .6693
43/64" .6719
11/16" .6875

If we can't alter it - we can make it. Please visit our "Specials to Print" page.