Yankee Counterbore,HSS,For Screw Size 5.00mm 302-0.1969 ZO-G5928964 - SIM Supply

High-speed steel counterbores are the most common choice for creating a flat-bottomed cavity at the top of the hole so that a bolt, nut, or other part is hidden beneath or sits flush with the top of the hole when installed into it. High-speed steel is less brittle than cobalt and can better withstand vibration and chattering. Sometimes known as solid pilot counterbores, these counterbores have a built-in pilot that cannot be removed and which keeps the counterbore centered in the hole to ensure a level seat. This listing is for each. Technical Specification Item Counterbore with Built-In Pilot Counterbore Type Oversized Material - Machining High Speed Steel Measurement System Metric Bore Dia. 3/16 in For Screw Size 5.00mm Pilot Dia. 13/64 in Oversized Increment 1/64 in Shank Dia. 5/16 in Overall Length 5 5/8 in Number of Flutes 4 Spiral Direction Right Hand