discount 70% in 2018-09-23 to 2018-09-25
price: USD$ 24.50
freight :USD$7.00,(Postal parcel)
Search Similar or mail to saler or send message to saler
Please read the following information carefully before you shoot:
A, this shop is a store delivery, there are a large number of stock, but the spiral screw with different precision and surface treatment, so before making contact dispensers or call 15019105750.
Three, the left tooth spiral groove tap (EX-SFT)
1:EX-SFT standard conventional blind hole can also be used through holes.
2: standard standing inventory, spiral screw and straight groove screw is different, the ordinary straight groove groove silk attack line type, and the spiral screw is a screw type. Spiral screw in tapping, to increase its rotation of the spiral groove, can easily cut iron from the hole, so as to avoid iron residue or blockage in the trench, caused by tapping broken edge crack, so it can increase the life of wire tapping and cutting out the thread of the highest precision. Screw thread tap is suitable for cutting high toughness material, but not suitable for cast iron and other chip materials.