Type：FFA.042204 FFA.053004 FFA.063205 FFA.084705 FFA.105706 FFA.126708 FFA.168710 FFA.200710 Description ：Date Stamp. This is a permanent date stamp where only the central year insert is change
Manufacturing process: rolled, milled or fully ground Material: HSS (HSS-Co are available) Point angle: 118°or 135º split point Flute type: N, parabolic flute Finish: black oxide, bright, coffee
Material ：SKH51 Hardness ：59-61HRC Length：within 300mm Coaxiality ：ф0.01mm Max. precision： 0.005mm ② Material ：SKD61 Internal Hardness ：38-42HRC Surface Hardness ： HV900 and higher
Material ：SKH51 Hardness ：59-61HRC. The minimum diameter of pin to be machined isф0.2mm，with the maximum precision up to 0.002mm. Further machining such as chrome-plating and character-engravin
① Material ：SKH51 Hardness ：59~61HRC ② Material ：SKD61 Hardness ：40-45HRC Nitrided surface Hardness ：HV900 and higher. Coaxiality kept within ф0.005 mm，Dia. ф0.3-14mm，The end may b
