Jobber Bit

Jobber Bit

Designed for general purpose drilling. Surface treated with back Oxide for abrasion resistance and improved coolant adherence

For sizes larger than 1/2", refer to Black & Gold

Diam. Decimal equivalent Flute Length Overall length
60 .0400 11/16 1-5/8
59 .0410 11/16 1-5/8
58 .0420 11/16 1-5/8
57 .0430 3/4 1-3/4
56 .0465 3/4 1-3/4
55 .0520 7/8 1-7/8
54 .0550 7/8 1-7/8
53 .0595 7/8 1-7/8
1/16 .0625 7/8 1-7/8
52 .0635 7/8 1-7/8
51 .0670 1 2
50 .0700 1 2
49 .0730 1 2
48 .0760 1 2
5/64 .0781 1 2
47 .0785 1 2
46 .0810 1-1/8 2-1/8
45 .0820 1-1/8 2-1/8
44 .0860 1-1/8 2-1/8
43 .0890 1-1/4 2-1/4
42 .0935 1-1/4 2-1/4
3/32 .0938 1-1/4 2-1/4
41 .0960 1-3/8 2-3/8
40 .0980 1-3/8 2-3/8
39 .0995 1-3/8 2-3/8
38 .1015 1-7/16 2-1/2
37 .1040 1-7/16 2-1/2
36 .1065 1-7/16 2-1/2
7/64 .1094 1-1/2 2-5/8
35 .1100 1-1/2 2-5/8
34 .1110 1-1/2 2-5/8
33 .1130 1-1/2 2-5/8
32 .1160 1-5/8 2-3/4
31 .1200 1-5/8 2-3/4
1/8 .1250 1-5/8 2-3/4
30 .1285 1-5/8 2-3/4
29 .1360 1-3/4 2-7/8
28 .1405 1-3/4 2-7/8
9/64 .1406 1-3/4 2-7/8
27 .1440 1-7/8 3
26 .1470 1-7/8 3
24 .1495 1-7/8 3
23 .1540 2 3-1/8
5/32 .1562 22 22
22 .1570 2 3-1/8
21 .1590 2-1/8 3-1/4
20 .1610 2-1/8 3-1/4
19 .1660 2-1/8 3-1/4
18 .1695 2-1/8 3-1/4
11/64 .1719 2-1/8 3-1/4
17 .1730 2-3/16 3-3/8
16 .1770 2-3/16 3-3/8
15 .1800 2-3/16 3-3/8
14 .1820 2-3/16 3-3/8
13 .1850 2-5/16 3-1/2
3/16 .1875 2-5/16 3-1/2
12 .1890 2-5.16 3-1/2
11 .1910 2-5/16 3-1/2
10 .1935 2-7/16 3-5/8
9 .1960 2-7/16 3-5/8
8 .1990 2-7/16 3-5/8
7 .2010 2-7/16 3-5/8
13/64 .2031 2-7/16 3-5/8
6 .2040 2-1/2 3-3/4
5 .2055 2-1/2 3-3/4
4 .2090 2-1/2 3-3/4
3 2130 2-1/2 3-3/4
7/32 2188 2-1/2 3-3/4
2 2210 2-5/8 3-7/8
1 .2280 2-5/8 3-7/8
A .2340 2-5/8 3-7/8
15/64 .2344 2-5/8 3-7/8
B .2380 2-3/4 4
C .2420 2-3/4 4
D .2460 2-3/4 4
1/4E .2500 2-3/4 4
F .2570 2-7/8 4-1/8
G .2610 2-7/8 4-1/8
17/64 2656 2-7/8 4-1/8
H .2660 2-7/8 4-1/8
1- .2720 2-7/8 4-1/8
J .2770 2-7/8 4-1/8
K .2810 2-15/16 4-1/4
9/32 .2812 2-15/16 4-1/4
L 2900 2-15/16 4-1/4
M .2950 3-1/16 4-3/8
19/64 .2969 3-1/16 4-3/8
N .3020 3-1/16 4-3/8
5/16 .3125 3-3/16 4-1/2
0 .3160 3-3/16 4-1/2
P 3230 3-5/16 4-5/8
21/64 .3390 3-7/16 4-3/4
Q .3390 3-7/16 4-3/4
R .3390 3-7/16 4-3/4
11/32 .3438 3-7/16 3-3/4
S .3480 3-1/2 4-7/8
T .3580 3-1/2 4-7/8
23/64 .3594 3-1/2 4-7/8
U .3680 3-5/8 5
3/8 .3750 3-5/8 5
V .3770 3-5/8 5
W .3860 3-3/4 5-1/8
25/64 0.3906 3-3/4 5-1/8
X 0.3970 3-3/4 5-1/8
Y 0.4040 3-7/8 5-1/4
13/32 0.4062 3-7/8 5-1/4
Z 0.4130 3-7/8 5-1/4
27/64 .4219 3-15/16 5-3/8
7/16 0.4375 4-1/16 5-1/2
29/64 0.4531 4-3/16 5-5/8
15/32 0.4688 4-5/16 5-3/4
31/64 0.4844 4-3/8 5-7/8
1/2 0.5000 4-1/2 6

Metric

Diam. Decimal equivalent Flute Length Overall length
.25 .0098 5/64 3/4
.30 .0118 3/32 3/4
.32 .0126 3/32 3/4
.35 .0138 1/8 3/4
.38 0150 3/16 3/4
.40 .0157 3/16 3/4
.45 .0177 3/16 7/8
.50 .0197 3/16 7/8
.55 .0217 1/4 1
.60 .0236 5/16 1-1/8
.65 .0256 3/8 1-1/4
.70 .0276 3/8 1-1/4
.75 .0295 1/2 1-3/8
.80 .0315 1/2 1-3/8
.85 .0335 5/8 1-1/2
.90 .0354 5/8 1-1/2
.95 .0374 5/8 1-1/2
1.00 .0394 11/16 1-5/8
1.05 .0413 11/16 1-5/8
1.10 .0433 3/4 1-3/4
1.15 .0453 3/4 1-3/4
1.20 .0472 7/8 1-7/8
1.25 .0492 7/8 1-7/8
1.30 .0512 7/8 1-7/8
1.35 .0531 7/8 1-7/8
1.40 .0551 7/8 1-7/8
1.45 .0571 7/8 1-7/8
1.50 .0591 7/8 1-7/8
1.55 .0610 7/8 1-7/8
1.60 .0630 7/8 1-7/8
1.65 .0650 1 2
1.70 .0669 1 2
1.75 .0689 2 1.80
1.80 .0709 2 1.85
1.85 .0782 2 1.90
1.90 .0748 2 1.95
1.95 .0768 2 2
2.00 .0787 1 2
2.05 .0807 1-1/8 2-1/8
2.10 .0827 1-1/8 2-1/8
2.15 .0846 1-1/8 2-1/8
2.20 .0866 1-1/4 2-1/4
2.25 .0886 1-1/4 2-1/4
1.60 .0630 7/8 1-7/8
1.65 .0650 1 2
1.70 .0669 1 2
1.75 .0689 2 1.80
1.80 .0709 2 1.85
1.85 .0782 2 1.90
1.90 .0748 2 1.95
1.95 .0768 2 2
2.00 .0787 1 2
2.05 .0807 1-1/8 2-1/8
2.10 .0827 1-1/8 2-1/8
2.15 .0846 1-1/8 2-1/8
2.20 .0866 1-1/4 2-1/4
2.25 .0886 1-1/4 2-1/4
2.30 .0906 1-1/4 2-1/4
2.35 .0925 1-1/4 2-1/4
2.40 .0945 1-1/4 2-1/4
2.45 .0965 1-3/8 2-3/8
2.50 .0984 1-3/8 2-3/8
2.60 .1024 1-7/16 2-1/2
2.70 .1063 1-7/16 2-1/2
2.80 .1102 1-1/2 2-5/8
2.90 .1142 1-5/8 2-3/4
3.00 .1181 1-5/8 2-3/4
3.10 .1220 1-5/8 2-3/4
3.20 .1260 1-5/8 2-3/4
3.30 .1299 1-3/4 2-7/8
3.40 .1339 1-3/4 2-7/8
3.50 .1378 1-3/4 2-7/8
3.60 .1417 1-7/8 3
3.70 .1457 1-7/8 3
3.80 .1496 1-7/8 3
3.90 .1535 2 3-1/8
4.00 .1575 2-1/8 3-1/4
4.10 .1614 2-1/8 3-1/4
4.20 .1654 2-1/8 3-1/4
4.30 .1693 2-1/8 3-1/4
4.40 .1732 2-3/16 3-3/8
4.50 .1772 2-3/16 3-3/8
4.60 .1811 2-3/16 3-3/8
4.70 .1850 2-5/16 3-1/2
4.80 .1890 2-5/16 3-1/2
4.90 .1929 2-7/16 3-5/8
5.00 .1969 2-7/16 3-5/8
5.10 .2008 2-7/16 3-5/8
5.20 .2047 2-1/2 3-3/4
5.30 .2087 2-1/2 3-3/4
5.40 .2126 2-1/2 3-3/4
5.50 .2165 2-1/2 3-3/4
5.60 .2205 2-5/8 3-7/8
5.70 .2244 2-5/8 3-7/8
5.80 .2283 2-5/8 3-7/8
5.90 .2323 2-5/8 3-7/8
6.00 .2362 2-3/4 4
6.10 .2402 2-3/4 4
6.20 .2441 2-3/4 4
6.30 .2480 2-3/4 4
6.40 .2520 2-7/8 4-1/8
6.50 2559 2-7/8 4-1/8
6.60 .2598 2-7/8 4-1/8
6.70 .2638 2-7/8 4-1/8
6.80 .2677 2-7/8 4-1/8
6.90 2717 2-7/8 4-1/8
7.00 .2756 2-7/8 4-1/8
7.10 .2795 2-15/16 4-1/4
7.20 .2835 2-15/16 4-1/4
7.30 .2874 2-15/16 4-1/4
7.40 .2913 3-1/16 4-3/8
7.50 .2953 3-1/16 4-3/8
7.60 .2992 3-1/16 4-3/8
7.70 .3031 3-3/16 4-1/2
7.80 .3071 3-3/16 4-1/2
7.90 .3110 3-3/16 4-1/2
8.00 .3150 3-3/16 4-1/2
8.10 .3189 3-5/16 4-5/8
8.20 .3228 3-5/16 4-5/8
8.30 .3268 3-5/16 4-5/8
8.40 .3307 3-7/16 4-3/4
8.50 .3346 3-7/16 4-3/4
8.60 .3386 3-7/16 4-3/4
8.70 .3425 3-7/16 4-3/4
8.80 .3465 3-1/2 4-7/8
8.90 .3504 3-1/2 4-7/8
9.00 .3543 3-1/2 4-7/8
9.10 .3583 3-1/2 4-7/8
9.20 .3622 3-5/8 5
9.30 .3661 3-5/8 5
9.40 .3701 3-5/8 5
9.50 .3740 3-5/8 5
9.60 .3780 3-3/4 5-1/8
9.70 .3819 3-3/4 5-1/8
9.80 .3858 3-3/4 5-1/8
9.90 .3898 3-3/4 5-1/8
10.00 .3937 3-3/4 5-1/8
10.20 .4016 3-3/4 5-1/8
10.50 .4134 3-7/8 5-1/4
10.80 .4252 4-1/16 5-1/2
11.00 .4331 4-1/16 5-1/2
11.20 .4409 4-1/16 5-1/2
11.50 .4528 4-3/16 5-5/8
11.80 .4646 4-3/8 5-3/4
12.00 .4724 4-3/8 5-7/8
12.20 .4803 4-3/8 5-7/8
12.50 .4921 4-1/2 6
12.80 .5039 4-1/2 6
13.00* .5118 4-1/2 6
14.00* .5512 4-13/16 6-5/8
15.50* .6102 5-3/16 7-1/8
16.50* .6496 5-3/16 7-1/8
17.50* .6890 5-5/8 7-5/8