Reverse Counterbore: 1/2" Dia, 5/32" Pilot Hole, 4 Flutes, High Speed Steel MPN:190-5J

MSC's high speed steel reverse counterbore is designed for creating holes with countersinks in various industries such as automotive, aerospace, construction or appliance where a hole is required to have threads that go into the workpiece while still maintaining an edge that sits flush with the surface. This reduces the risk of stripping screws or having protruding heads which can pose safety hazards or cause wear and tear on the product itself. The 5/32 pilot hole helps ensure accurate placement while four flutes quickly remove material to save time during machining. Reverse counterbores made from high speed steel provide durability, resistance to wear, and excellent hardness for longer lasting performance making it a practical choice for many applications requiring hole creation with countersinks.