|
Laminated
Decimal Equivalent Chart
with Tap and Drill sizing information. This
chart shows the decimal equivalent for drill sizes
.10 through 1". It also shows tap sizes
0-80 through 1-14, and their required drill
sizes. This chart is poster-size, laminated,
and can be marked and erased with a dry-erase marker. Approximate size:
18x25". |
|
|
| |
 |
|
|
Drill,
Tap
and
Countersink,
all in one step! |
|
| Finally, one bit that
does it all! 6 piece set taps up to 10ga.
metal. Taps 6-32 to 1/4-20. |
|
|
|
Olympia Tools
 |
|
29 piece
Contractor-Grade
Drill Bit Set |
| Includes 29 premium Drill Bits
from 1/16" thru 1/2" by 64ths. Also includes
a durable metal storage index. |
|
|
Korit Sales has a complete selection of taps and
dies! We offer them individually, or in sets. Give us
a call today with your needs! |
|
|
Tap and Drill
Chart
(Recommended tap drill to use for 75% depth of thread)
| To
Tap This Size Screw Or Bolt: |
Use
This Drill Bit: |
(Closest
Fractional:) |
Decimal
Inches |
| 0-80
NF |
3/64" |
3/64" |
.0469 |
| 1-64
NC |
#53 |
- |
.0595 |
| 1-72
NF |
#53 |
1/16" |
.0595 |
| 2-56
NC |
#50 |
- |
.0700 |
| 2-64
NF |
#50 |
- |
.0700 |
| 3-48
NC |
#47 |
5/64" |
.0785 |
| 3-56
NF |
#45 |
- |
.0820 |
| 4-36
NS |
#44 |
- |
.0860 |
| 4-40
NC |
#43 |
3/32" |
.0890 |
| 4-48
NF |
#42 |
3/32" |
.0935 |
| 3mm-.060mm |
2.5mm |
- |
.0984 |
| 1/8-40
NS |
#38 |
- |
.1015 |
| 5-40
NC |
#38 |
- |
.1015 |
| 5-44
NF |
#37 |
- |
.1040 |
| 6-32
NC |
#35 |
7/64" |
.1100 |
| 6-36
NS |
#34 |
- |
.1110 |
| 6-40
NF |
#33 |
- |
.1130 |
| 6-48
NS |
#31 |
- |
.1200 |
| 4mm-0.70mm |
3.4mm |
- |
.1338 |
| 4mm-.075mm |
3.4mm |
- |
.1338 |
| 8-32
NC |
#29 |
- |
.1360 |
| 8-36
NF |
#29 |
9/64" |
.1360 |
| 8-40
NS |
#28 |
- |
.1405 |
| 3/16-24
NS |
#26 |
- |
.1470 |
| 10-24
NC |
#25 |
5/32" |
.1495 |
| 3/16-32
NS |
#22 |
- |
.1570 |
| 10-32
NF |
#21 |
5/32" |
.1590 |
| 5mm-.090mm |
4.2mm |
- |
.1653 |
| 5mm-.080mm |
4.3mm |
- |
.1693 |
| 12-24
NC |
#16 |
11/64" |
.1770 |
| 12-28
NF |
#14 |
3/16" |
.1820 |
| 12-32
NEF |
#13 |
- |
.1850 |
| 14-20
NS |
#10 |
- |
.1935 |
| 1/4-20
NC |
#7 |
13/64" |
.2010 |
| 14-24
NS |
#7 |
- |
.2010 |
| 6mm-1.00mm |
5.2mm |
- |
.2047 |
| 1/4-24
NS |
#4 |
- |
.2090 |
| 1/4-28
NF |
#3 |
7/32" |
.2130 |
| 1/4-32
NEF |
7/32" |
7/32" |
.2188 |
| 1/4-40
NS |
#1 |
- |
.2280 |
| 7mm-1.00mm |
6.1mm |
15/64" |
.2401 |
| 5/16-18
NC |
Ltr.F |
17/64" |
.2570 |
| 8mm-1.25mm |
6.9mm |
17/64" |
.2716 |
| 5/16-24
NF |
Ltr.I |
- |
.2720 |
| 8mm-1.00mm |
7.1mm |
- |
.2795 |
| 5/16-32
NEF |
9/32" |
9/32" |
.2812 |
| 9mm-1.25mm |
7.9mm |
- |
.3110 |
| 3/8-16
NC |
5/16" |
5/16" |
.3125 |
| |
| * These Sizes Are
Spark Plug Taps |
|
| To
Tap This Size Screw Or Bolt: |
Use
This Drill Bit: |
(Closest
Fractional:) |
Decimal
Inches |
| 9mm-1.00mm |
8.1mm |
- |
.3189 |
| 9mm-0.75mm |
8.3mm |
- |
.3268 |
| 3/8-24
NF |
Ltr.Q |
21/64" |
.3320 |
| 10mm-1.50mm |
8.7mm |
- |
.3425 |
| 10mm-1.25mm |
8.9mm |
11/32" |
.3503 |
| 10mm-1.00mm* |
9.1mm |
- |
.3583 |
| 7/16-14
NC |
Ltr.U |
23/64" |
.3680 |
| 11mm-1.50mm |
9.7mm |
- |
.3818 |
| 7/16-20
NF |
25/64" |
25/64" |
.3906 |
| 12mm-1.75mm |
10.5mm |
- |
.4133 |
| 12mm-1.50mm |
10.7mm |
27/64" |
.4212 |
| 1/2-13
NC |
27/64" |
27/64" |
.4219 |
| 12mm-1.25mm* |
10.9mm |
27/64" |
.4291 |
| 1/2-20
NF |
29/64" |
29/64" |
.4531 |
| 1/2-24
NS |
29/64" |
29/64" |
.4531 |
| 14mm-2.00mm |
12.2mm |
- |
.4803 |
| 9/16-12
NC |
31/64" |
31/64" |
.4844 |
| 14mm-1.50mm |
12.7mm |
- |
.4999 |
| 14mm-1.25mm* |
12.8mm |
- |
.5039 |
| 9/16-18
NF |
33/64" |
33/64" |
.5156 |
| 5/8-11
NC |
17/32" |
17/32" |
.5312 |
| 16mm-2.00mm |
14.2mm |
35/64" |
.5590 |
| 5/8-18
NF |
37/64" |
37/64" |
.5781 |
| 16mm-1.50mm |
14.7mm |
- |
.5787 |
| 11/16-11
NS |
19/32" |
19/32" |
.5938 |
| 18mm-2.50mm |
15.8mm |
39/64" |
.5220 |
| 11/16-16
NS |
5/8" |
5/8" |
.6250 |
| 3/4-10
NC |
21/32" |
21/32" |
.6562 |
| 18mm-1.50mm* |
16.8mm |
- |
.6614 |
| 3/4-16
NF |
11/16" |
11/16" |
.6875 |
| 20mm-2.50mm |
17.8mm |
11/16" |
.7008 |
| 7/8-9
NC |
49/64" |
49/64" |
.7656 |
| 7/8-14
NF |
13/16" |
13/16" |
.8125 |
| 22mm-1.50mm |
20.9mm |
- |
.8228 |
| 7/8-18
NS* |
53/64" |
53/64" |
.8281 |
| 24mm-3.00mm |
21.4mm |
53/64" |
.8425 |
| 1.8
NC |
7/8" |
7/8" |
.8750 |
| 24mm-2.00mm |
22.3mm |
- |
.8779 |
| 1.12
NF |
59/64" |
59/64" |
.9219 |
| 1-14
NS |
15/16" |
15/16" |
.9375 |
| 1
1/8-7 NC |
63/64" |
63/64" |
.9844 |
| 1
1/8-12 NF |
1
3/64" |
1
3/64" |
1.0469 |
| 1
1/4-7 NC |
1
7/64" |
1
7/64" |
1.1094 |
| 1
1/4-12 NF |
1
11/64" |
1
11/64" |
1.1719 |
| 1
3/8-6 NC |
1
7/32" |
1
7/32" |
1.2188 |
| 1
3/8-12 NF |
1
19/64" |
1
19/64" |
1.2969 |
| 1
1/2-6 NC |
1
11/32" |
1
11/32" |
1.3438 |
| 1
1/2"-12 NF |
1
27/64" |
1
27/64" |
1.4219 |
|
|
National Pipe Tapered Tap Chart
(Recommended tap drill to use for 75% depth of thread) |
| To
Tap This Size Pipe: |
Use
This Drill Bit: |
(Closest
Fractional:) |
Decimal
Inches: |
| 1/8-27
NPT |
Ltr.R |
- |
.3390 |
| 1/4-18
NPT |
7/16" |
7/16" |
.4375 |
| 3/8-18
NPT |
37/64" |
37/64" |
.5781 |
| 1/2-14
NPT |
45/64" |
45/64" |
.7031 |
| 3/4-14
NPT |
59/64" |
59/64" |
.9219 |
| 1-11
1/2 NPT |
1
5/32" |
1
5/32" |
1.1562 |
| 1
1/4-11 1/2 NPT |
1
1/2" |
1
1/2" |
1.5000 |
| 1
1/2-11 1/2 NPT |
1
47/64" |
1
47/64" |
1.7344 |
| 2-11
1/2 NPT |
2
7/32" |
2
7/32" |
2.2188 |
|
|
|
|
