How to Drill and Tap.

Just about every cell requires some plumbing to be done. applying brackets or drilling holes for your anode or cathode. Even adding the nessesary hose barbs for your HHO Generators gas output. Drilling and tapping is a very great skill to master and it easy to do. Most of the HHO Generators Housings that you will encounter will be done in PVC> PVC is very easy to drill and tap. Here Is a great How to Video showing Just how its done. The Video Is by AlmostHydrogen. Take a look at his other videos on our Video favorites under AlmostHdrogen or Click on the Link benethe the bottum of the Video Player to go directly to his You Tube Channel for more Information.

                             drill and tap kit

SAAETY FIRST!!! EXPERMENTS HAVE LETHIAL POTENTIOL AS WELL AS COULD CAUSE SEROUS DAMAGE TO PROPERTY AND LIFE WE ARE NOT RESPONCEABLE FOR ANY DISTRUCTION OR LOSS OF LIFE.

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AlmostHydrogen Youtube Channel

Drill and Tap Size Chart (Standard Threads)

American Standard Thread ...... ISO Metric Thread
Thread Size Tap Drill Size (in.) Thread Size Tap Drill Size(mm)
0-80 3/64 M1 x 0.25 0.75
1-64 53 M1.1 x 0.25 0.85
1-72 53 M1.2 x 0.25 0.95
2-56 51 M1.4 x 0.3 1.10
2-64 50 M1.6 x 0.35 1.25
3-48 5/64 M1.8 x 0.35 1.45
3-56 46 M2 x 0.4 1.60
4-40 43 M2.2 x 0.45 1.75
4-48 42 M2.5 x 0.45 2.05
5-40 39 M3 x 0.5 2.50
Thread Size Tap Drill Size (in.) ...... Thread Size  Tap Drill Size(mm)
5-44 37 M3.5 x 0.6 2.90
6-32 36 M4 x 0.7 3.30
6-40 33 M4.5 x 0.75 3.70
8-32 29 M5 x 0.8 4.20
8-36 29 M6 x 1 5.00
10-24 25 M7 x 1 6.00
10-32 21 M8 x 1.25 6.80
12-24 17 M9 x 1.25 7.80
12-28 15 M10 x 1.5 8.50
1/4-20 7 M11 x 1.5 9.50
Thread Size Tap Drill Size (in.) ...... Thread Size  Tap Drill Size(mm)
1/4-28 3 M12 x 1.75 10.20
5/16-18 F M14 x 2 12.00
5/16-24 I M16 x 2 14.00
3/8-16 5/16 M18 x 2.5 15.50
3/8-24 Q M20 x 2.5 17.50
7/16-14 U M22 x 2.5 19.50
7/16-20 W M24 x 3 21.00
1/2-13 27/64 M27 x 3  24.00
1/2-20 29/64 M30 x 3.5 26.50
9/16-12 31/64 M33 x 3.5 29.50
Thread Size Tap Drill Size (in.) ...... Thread Size  Tap Drill Size(mm)
9/16-18 33/64 M36 x 4 32.00
5/8-11 17/32 M39 x 4 35.00
5/8-18 37/64 M42 x 4.5 37.50
3/4-10 21/32 M45 x 4.5 40.50
3/4-16 11/16 M48 x 5 43.00
7/8-9 49/64 M52 x 5 47.00
7/8-14 13/16 M56 x 5.5 50.50
1"-8 7/8 M60 x 5.5 54.50
1"-14 15/18 M64 x 6 58.00
M68 x 6 62.00