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Tap screw / wire tapping M34568101214161820 for all purpose grinding machine

price:USD$89.00
discount 70% in 2018-09-22 to 2018-09-24
price: USD$ 62.30
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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Manufacturer: Shanghai Tool Factory Co., Ltd.

Brand: going to work

Material: high speed steel M2

Suitable for processing: ordinary steel parts, iron parts, die steel, etc.. It is suitable for machining the hole without thread, and the chip is discharged backwards when machining. Because of the spiral angle, the actual rake angle of the tap increases with the increase of the helix angle.

Bottom hole formula: diameter = - pitch diameter of thread