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Conversions
This page includes a conversion chart and some technical information on tap & clearance drill sizes which you may find useful. Please scroll down the page to view all information.
Please see our chart below if you need to convert any metric sizes or imperial sizes or vice versa.
|
1 |
Gauge |
= |
1 |
Swg |
= |
0.300” |
or |
7.620mm |
|
2 |
Gauge |
= |
2 |
Swg |
= |
0.276” |
or |
7.010mm |
|
3 |
Gauge |
= |
3 |
Swg |
= |
0.252” |
or |
6.401mm |
|
4 |
Gauge |
= |
4 |
Swg |
= |
0.232” |
or |
5.893mm |
|
5 |
Gauge |
= |
5 |
Swg |
= |
0.212” |
or |
5.385mm |
|
6 |
Gauge |
= |
6 |
Swg |
= |
0.192” |
or |
4.877mm |
|
7 |
Gauge |
= |
7 |
Swg |
= |
0.176” |
or |
4.470mm |
|
8 |
Gauge |
= |
8 |
Swg |
= |
0.160” |
or |
4.064mm |
|
9 |
Gauge |
= |
9 |
Swg |
= |
0.144” |
or |
3.658mm |
|
10 |
Gauge |
= |
10 |
Swg |
= |
0.128” |
or |
3.251mm |
|
11 |
Gauge |
= |
11 |
Swg |
= |
0.116” |
or |
2.946mm |
|
12 |
Gauge |
= |
12 |
Swg |
= |
0.104” |
or |
2.642mm |
|
13 |
Gauge |
= |
13 |
Swg |
= |
0.092” |
or |
2.337mm |
|
14 |
Gauge |
= |
14 |
Swg |
= |
0.080” |
or |
2.032mm |
|
15 |
Gauge |
= |
15 |
Swg |
= |
0.072” |
or |
1.829mm |
|
16 |
Gauge |
= |
16 |
Swg |
= |
0.064” |
or |
1.626mm |
|
17 |
Gauge |
= |
17 |
Swg |
= |
0.056” |
or |
1.422mm |
|
18 |
Gauge |
= |
18 |
Swg |
= |
0.048” |
or |
1.219mm |
|
19 |
Gauge |
= |
19 |
Swg |
= |
0.040” |
or |
1.016mm |
|
20 |
Gauge |
= |
20 |
Swg |
= |
0.036” |
or |
0.914mm |
|
21 |
Gauge |
= |
21 |
Swg |
= |
0.032” |
or |
0.813mm |
|
22 |
Gauge |
= |
22 |
Swg |
= |
0.028” |
or |
0.711mm |
|
23 |
Gauge |
= |
23 |
Swg |
= |
0.024” |
or |
0.610mm |
|
24 |
Gauge |
= |
24 |
Swg |
= |
0.022” |
or |
0.559mm |
|
25 |
Gauge |
= |
25 |
Swg |
= |
0.020” |
or |
0.508mm |
|
26 |
Gauge |
= |
26 |
Swg |
= |
0.018” |
or |
0.457mm |
|
27 |
Gauge |
= |
27 |
Swg |
= |
0.0164” |
or |
0.417mm |
|
28 |
Gauge |
= |
28 |
Swg |
= |
0.0148” |
or |
0.376mm |
|
29 |
Gauge |
= |
29 |
Swg |
= |
0.0136” |
or |
0.345mm |
|
30 |
Gauge |
= |
30 |
Swg |
= |
0.0124” |
or |
0.315mm |
Please see the following chart for Tap & Clearance Drill Size Information
|
Metric Tap & Clearance Drill Sizes |
|
Tap Drill |
Clearance Drill |
||
|
|
|
75% Thread for Aluminium, Brass & Plastics |
50% Thread for Steel, Stainless & Iron |
Close Fit |
Standard Fit |
|
|
|
|
|
|
|
|
Screw Size |
Thread Pitch (mm) |
Drill Size (mm) |
Drill Size (mm) |
Drill Size (mm) |
Drill Size (mm) |
|
M 3 |
0.60 |
2.40 |
2.60 |
3.15 3.15 |
3.30 3.30 |
|
0.50 |
2.50 |
2.70 |
|||
|
M 4 |
0.75 |
3.25 |
3.50 |
4.20 4.20 |
4.40 4.40 |
|
0.70 |
3.30 |
3.50 |
|||
|
M 5 |
1.00 |
4.00 |
4.40 |
5.25 5.25 5.25 |
5.50 5.50 5.50 |
|
0.90 |
4.10 |
4.40 |
|||
|
0.80 |
4.20 |
4.50 |
|||
|
M 8 |
1.25 |
6.80 |
7.20 |
8.40 8.40 |
8.80 8.80 |
|
1.00 |
7.00 |
7.40 |
|||
|
M 10 |
1.50 |
8.50 |
9.00 |
10.50 10.50 10.50 |
11.00 11.00 11.00 |
|
1.25 |
8.80 |
9.20 |
|||
|
1.00 |
9.00 |
9.40 |
|||
|
M 12 |
1.75 |
10.30 |
10.90 |
12.60 12.60 12.60 |
13.20 13.20 13.20 |
|
1.50 |
10.50 |
11.00 |
|||
|
1.25 |
10.80 |
11.20 |
|||
|
M 16 |
2.00 |
14.00 |
14.75 |
16.75 16.75 |
17.50 17.50 |
|
1.50 |
14.50 |
15.00 |
|||
|
M 20 |
2.50 |
17.50 |
18.50 |
21.00 21.00 21.00 |
22.00 22.00 22.00 |
|
2.00 |
18.00 |
18.50 |
|||
|
1.50 |
18.50 |
19.00 |
|||