The RS PRO 131‑842 is a precision-engineered high-speed steel (HSS) counterbore drill bit designed for creating flat-bottomed recesses to accommodate M5 threaded screws flush with a workpiece’s surface. It features a 10 mm cutter diameter with an 18 mm cutting length, an 8 mm plain shank, and an overall length of 80 mm. Ideal for metalworking tasks that require discreet screw heads, this single-piece tool offers reliable, entry-level functionality for both professional and workshop environments.
RS PRO’s HSS counterbore bits, including the 131‑842, provide excellent wear resistance and durability thanks to their high-quality HSS construction. They maintain sharpness over prolonged use, ensuring consistent, clean cuts and smooth finishes.
