discount 70% in 2018-09-24 to 2018-09-26
price: USD$ 34.30
freight :USD$7.00,(Postal parcel)
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Dongguan Changan Hong Hong Hardware tool is a management of extrusion silk attack, adhering to the "good faith management, quality assurance, excellence" business philosophy, commitment to provide customers with good reputation, reasonable price, punctual delivery. Main wholesale: TaiwanTOSGWire tapping,YAMAWAWire attack, KoreaKOSGTap,OSGWire tap, lengthened tap, sheath tap, left tooth tap, non-standard fine tap and so on.
Contact mobile phone:13825722997 Miss Chen
Spiral groove tap,It is more suitable for machining non hole thread, and the chip is discharged backwards when machining. Because of the screw angle, the actual rake angle of the tap increases with the increase of the helix angle. Experience tells us: the processing of ferrous metal, spiral angle election of a small point, generally in the30Ensure the strength of spiral teeth. Machining of non-ferrous metals, spiral angle election of a larger point, can be in45About a bit, cutting a bit sharp.