ISO standard and our country standard set but the meaning of model of dislocation razor blade. But the model of dislocation razor blade, common 10 date the feature that content will come to express main parameter. According to the regulation, before any model razor blade must be used 7 date, hind 3 date just using when necessary. But to lathe tool razor blade, the 10th a part that attributes a standard to ask to tag. Have no matter without the 8th, 89 date, the 10th must use short horizontal line "-" and in front date separate, and its letter must not be used the 8th, 89 date the letter that already had used, should use only among them when, write in the 8th on, blank space does not need among. Be opposite now 10 date specific content makes a specification. CNMG120412-NM4APHW200460TR-A27CNMG120412-NM4APHW200460TR-A27 the first letter, express but the appearance CNMG120412-NM4APHW200460TR-A27 of dislocation razor blade the 2nd letter, express but of dislocation razor blade hind horny CNMG120412-NM4APHW200460TR-A27 the 3rd letter, express but the basis of grinding of classics of accuracy class deputy edge of dislocation razor blade bit dimension (see ISO 1832)CNMG120412-NM4APHW200460TR-A27 the 4th letter, express but of dislocation razor blade before blade face and central pass CNMG120412-NM4APHW200460TR-A27 the 5th, 6 digit word, express but the integer value CNMG120412-NM4APHW200460TR-A27 of length of dislocation blade point the 7th, 8 digit word, express but the ply CNMG120412-NM4APHW200460TR-A27 of dislocation razor blade the 9th, when word of 10 amount to, express but radius of circular arc of point of a knife of dislocation razor blade the 9th, when be a letter 10 times, express respectively but tool cutting edge angle of dislocation razor blade and eleventh of APHW200460TR-A27 of the horn after repairing Guang Ren the letter states point appearance APHW200460TR-A27 is dozenth when the letter, express to label for the manufacturer after hyphen of cutting direction CNMG120412-NM4APHW200460TR-A57, if break bits chamfer code name, this exemple is Waerte's manufacturer to label CNC Milling