Trade Quality 10 Pc Tap and Wrench Set M3 to M12 - NEW
This neat set comes with 10 taps plus T bar tap wrench for extra leverage.
This high quality tap set has been precision made for cutting threads in metal.
Made from high quality alloy steel
To cut an internal thread, select the tap of the desired size, tap wrench, proper drill size or hole size, and lubricating or cutting oil.
The proper hole size is very important in the formation of good threads. An oversized hole results in reduced thread height, an undersized hole will overload the tap and cause undue breakage Refer to the required drill size permanently marked on the shand of each tap and drill the hole to desired depth.
Secure tap by the square in the tap wrench and start threads by turning clockwise Great care must be taken to start the tap square to the hole. As the tap is turned it bites into the metal and leads into the hole. After the tap has been started, metal chips that flow into the flute spaces must be broken to relieve pressure on the tap.
This is accomplished by reversing the tap direction every 1/4 to 1/2 revolution depending on the tightness encountered providing lubrication to the cutting edges while tapping will result in smoother threads and longer tap life. Continue threading until the tap passes through the part or to the desired depth.
When tapping a blind hole (one that does not pass entirely through the part) take care in drilling to provide clearance at the bottom for chips and the starter threads. These chamfered threads on the end of the tap will not cut full threads.
- Type : Tap and Wrench Set
- Grade : Trade Quality
- Material : Heavy duty alloy steel
- Number of pieces in set : 10
- Sizes : M3x0.5; M3.5x0.6; M4x0.7; M5x0.8; M6x1.0; M7x1.0; M8x1.25; M10x1.5; M12x1.75
- Includes : Tap holder
- Uses : For dressing and cleaning threads
RRP - £29.99