3455-17-108-4848

3455-66-112-3604 3455661123604 661123604 is a geometrically shaped item with one or more edges designed for various machine operations such as boring, cut-off, planing, slotting, threading and turning. it is held in a pocket or other seating surfaces of a holder by mechanical means. it is not designed to be sharpened or reground. indexable items must have two or more edges. for items designed for grinding, sharpening or with shanks, see cutter bit, tool holder.

5210-66-014-3976 5210660143976 660143976 is a thin steel template which furnishes a correct standard for grinding thread cutting tools. for sixty degree v-form threads see gage, center.