discount 70% in 2018-09-21 to 2018-09-23
price: USD$ 50.40
freight :USD$7.00,(Postal parcel)
Search Similar or mail to saler or send message to saler
Three, spiral groove tap (EX-SFT)
1:EX-SFT standard conventional blind hole can also be used through holes.
2: standard goods standing stock, screw wire attack and general straight groove wire attack is different, ordinary straight groove wire attack groove into linear type, and spiral wire attack is spiral type. When the screw thread is used to attack the tooth, the iron filings can be easily discharged from the hole by the spiral rotation of the spiral groove, so as to avoid the residual iron or the blockage in the groove, and cause the broken edge of the wire tapping and breaking, so that the life of the wire tapping can be increased and the thread with the highest precision can be cut out. Spiral wire tapping is suitable for cutting high toughness materials, but not suitable for fine chips such as cast iron.
(in general, than no ti Ti coated wire tapping and long service life 30%)