Tap And Die Set 110 PCS Tungsten Alloy Steel Metric For Cutting External Interna. Precision machined, Tungsten steel taps and dies. Dies are split to help facilitate the fine adjustment of core diameter. Set includes Metric coarse and fine sizes.
The set includes two sliding jaw type tap wrenches and T-Bar type tap wrench together with two steel die holder with knurled screws. The taps and dies contained in this set are precision tools. Supplied in heavy-duty blow moulded storage case.They are manufactured from high quality steel, heat treated, and tempered for Rockwell HARDNESS 58-61 C. As with all precision tools, proper use and care is required to assure proper threading and longest tool life. This set of engineer' taps and dies includes a Taper tap for starting the cut and an intermediate tap (see explanation below). Taper tap or starting tap. This is similar to a plug tap but has a more pronounced taper to the cutting edges. This feature gives the taper tap a very gradual cutting action that is less aggressive than that of the plug tap. The number of tapered threads typically ranges from 8 to 10. A taper tap is most often used when the material to be tapped is difficult to work e. Intermediate tap or second tap. The tap has tapered cutting edges, which assist in aligning and starting the tap into an untapped hole. The number of tapered threads typically ranges from 3 to 5. In the Britain they are commonly known as second taps. 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.
This set of taps are designed for general use. PLUG style with 3 to 5 chamfered threads. BOTTOMING taps with 1 to 1 chamfered threads for tapping to the bottom of a blind hole.
TAPER taps with 8 to 10 chamfered threads for easiest starting are also available but are not needed by the average user. To cut an external thread, such as on a bolt, select the correct die for the rod being threaded, die stock, and lubricating or cutting oil.
Size of the rod or bolt, is of great importance. It must be no larger than the desired thread, and preferably 005" to 010" undersized. Oversized work may damage the die and will make turning very difficult. Slightly undersized work is easier to thread and furnishes enough thread height for normal use. After securing the part being threaded, insert the die into the die stock and run the screw snugly into one of the recesses in the outside surface of the die.The recess and slot pattern of dies allows use with a variety of die stocks. The chamfered side of the die is used for starting the threading operation.
Always bevel the end of the piece to be threaded to make angles starting easier. This filed or ground chamfer also helps in starting at right to the work which is of major importance. Start the die on the rod with clockwise rotation until it begins cutting onto the work piece.Chips will flow into the holes provided and should be broken by reversing the action every 1/4 to 1/2 turn depending upon tightness encountered. Continue this operation until threads of the desired length have been cut. Provide appropriate lubrication while cutting threads.
Manufactured from high quality steel, heat treated and tempered for strength and durability. Set includes metric coarse and fine sizes. M2 x 0.4, M3 x 0.5, M4 x 0.7, M5 x 0.8, M6 x 0.75, M6 x 1, M7 x 0.75, M7 x 1, M8 x 0.75, M8 x 1, M8 x 1.25, M9 x 0.75, M9 x 1, M9 x 1.25, M10 x 0.75, M10 x 1, M10 x 1.25, M10 x 1.5, M11 x 0.75, M11 x 1, M11 x 1.25, M11 x 1.5, M12 x 0.75, M12 x 1, M12 x 1.25, M12 x 1.5, M12 x 1.75, M14 x 1, M14 x 1.25, M14 x 1.5, M14 x 2, M16 x 1, M16 x 1.5, M16 x 2, M18 x 1.5.
Sub-Type:ENGINEERING TAP AND DIE SET. Tap holder:M3 - M12 (1/16" - 1/2").
Tap holder:M6 - M20 (1/4" - 3/4"). Die holder:Total length 200mm (1 diameter bore).
Die holder:Total length 270mm (1 1/2 diameter bore). 2 x tap holders (different size). 1 x T- bar tap wrench.
2 x Die holder (different size). 1 x Portable Storage Case.
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This item is in the category "Home & Garden\Tools & Workshop Equipment\Hand Tools\Taps & Dies". The seller is "bestcncdeals" and is located in Shenzhen.This item can be shipped worldwide.