Specifications

Drilling for Varies kinds of fessional for iron,stainless steel

Everybody look here. High quality drills use for all applications.Use right drills can drilling hole easily and quickly. We do this work from 1990 year.

YOFO drills drill the world from north to south from east to west.

Type: Twist Drill Bit

Material:M2,M35,M42,F4341,9341 or 4341. HSS-Co5%

HARDNESS:HSS hrc63-66

                     HSSCO HRC64-68

Manufacturing process:

 Roll ground

fully ground

milled

Point angle: 118 Degree, 135 Split Point

Application: alloy steel, unalloyed Steel, iron, cast iron, non-ferrous metals

International Standard:

Roll Forged       DIN338                   DIN340                       Jobber Length    

Half Ground     DIN338                   DIN340                       DIN1897                                 Jobber Length

Fully Ground     DIN338                   DIN340                       DIN1897                                 Aircraft Extension e                                        

                           JobberLength         Taper Length g           Screw Machine Length

 Milled               DIN340 b               DIN1869                     Aircraft Extension d             Extra Length

 

 THIS ALL NORMAL GOODS. PAPER BAG AND PLASTIC BOX ALL AVAIABLE.