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Slightly widen the hole at the surface using
a countersink bit (max. 10 % of the thread
diameter at all sides). This will ease the work
of the tap 3 in turning the first threads.
Mount the selected tap 3 in the tap
wrench 4 .
Place the mounted tap 3 on the core
hole. Ensure that the tap 3 is absolutely
perpendicular.
Turn the tap wrench 4 slowly clockwise
using even pressure.
If necessary turn it backwards slightly to
break up the accumulated metal shavings.
ø Thread Thread pitch ø Core hole
M3
0.5 mm
M4
0.7 mm
M5
0.8 mm
M6
1.0 mm
M7
1.0 mm
M8
1.25 mm
M10
1.5 mm
M12
1.75 mm
ø Thread Thread per
inch
1/8"
27
§ Cutting external threads
(Figure B)
Note: Use cutting oil to reduce the friction
between the workpiece and the die 1 .
Determine the required thread.
Select the thread to match the bolt diameter.
This should be slightly smaller than the
nominal diameter of the thread (see table
below).
Slightly chamfer the leading edge of the
bolt. This will ease the work of cutting the
first threads.
Mount the selected die 1 in the die stock 2 .
6
GB/IE/NI
ø Thread Thread pitch
2.5 mm
3.3 mm
4.2 mm
5.0 mm
ø Thread Thread per
5.8 mm
6.8 mm
8.5 mm
§ Cleaning and care
10.2 mm
ø Core hole
8.8 mm
§ Disposal
Contact your local refuse disposal authority for
more details of how to dispose of your worn-out
product.
Place the die 1 on the bolt to be cut.
Ensure that the arms of the die stock 2 are
at right angles to the bolt to be cut.
Turn the die stock 2 slowly clockwise using
even pressure.
If necessary turn it backwards slightly to
break up the accumulated metal shavings.
M3
0.5 mm
M4
0.7 mm
M5
0.8 mm
M6
1.0 mm
M7
1.0 mm
M8
1.25 mm
M10
1.5 mm
M12
1.75 mm
inch
1/8"
27
Remove metal shavings using a soft brush or
safety gloves.
Rub the dies 1 and taps 3 with an oily
rag if they are to remain unused for a long
period of time.
The packaging is made entirely of
recyclable materials, which you may
dispose of at local recycling facilities.
ø Bolt
2.9 mm
3.9 mm
4.9 mm
5.9 mm
6.9 mm
7.9 mm
9.8 mm
11.8 mm
ø Bolt
9.62 mm
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