Back Home Products Tools Thread-cutting tools Hand Tap DIN 352, HSS-G Metric Thread, Set 3 pcs, KAMtools

Hand Tap DIN 352, HSS-G Metric Thread, Set 3 pcs, KAMtools

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Article №StandardSize /mm/Pcs in a box /package/Price for a box
/package/
101451 35 3 -1 DIN 352M3 x 0.501 9.65 BGN
 pcs
101451 47 3-1 DIN 352M4 x 0.701 9.65 BGN
 pcs
101451 58 3-1 DIN 352M5 x 0.801 11.31 BGN
 pcs
101451 61 3-1 DIN 352M6 x 1.001 12.64 BGN
 pcs
101451 8125 3-1 DIN 352M8 x 1.251 17.97 BGN
 pcs
101451 1015 3-1 DIN 352M10 x 1.501 22.76 BGN
 pcs
101451 12175 3-1 DIN 352M12 x 1.751 29.95 BGN
 pcs

Application
The main application of the tap is MANUAL tapping of internal, metric standard thread pitch.
The thread is cut in a through hole pre-drilled with a certain nominal diameter drill /specified in the
technical data/.
The tap is installed in a tap wrench. Fixing is done by movable jaws that grip the square tail
of the tap. It is important to start the thread cutting in a correct way – the tap have to be
perpendicular to the hole. The thread is cut by turning the tap clockwise, slowly and evenly. To avoid
tightening every 1 to 3 turns the tap is turned in the opposite direction by ¼ to ½ turn. In this way the
chips are cleared and the application of great effort is avoided.
It is recommended a coolant lubricant liquid to be used. The force of friction and the risk of
breakage and wear are significantly reduced thanks to it.

Operation Technique
For MANUAL thread cutting the optimal option is the set of three taps to be used. Each of
them has a different diameter and profile accuracy. A part of the metal is consecutively removed
along the profile of the thread and a part of it is cut. In this way cutting is done with less application
of the torque on the tap (the risk of its breakage is reduced), it “bites” the beginning of the thread
more easily and the thread profile becomes cleaner. Conventionally, the taps are defined as a tap
for coarse, medium and fine cutting:
Coarse tapping: This tap is marked with ONE line on the tail. The thread cutting is started with it. It
takes about 60% of the metal.
Medium tapping: This tap is marked with TWO lines on the tail. The thread cutting is continued with
it. It takes about 30% of the metal.
Fine tapping: There is no marking on the tail of this tap. The thread cutting is completed with it. It
makes the final cleaning and exact thread calibration.

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