Sumitomo Electric Industries, Ltd. MDF0160S2D Flat Drill

Sumitomo Electric MDF0160S2D Flat Drill is a 1.6 mm nominal diameter solid carbide flat MultiDrill (MDF) designed for high-efficiency spot facing and drilling on inclined or curved surfaces. The S2D code indicates external coolant supply, aligning with Sumitomo’s MDF flat-drill family that uses external cooling to improve chip control on complex geometries. Some listings cite an ACF75 coating on MDF0160S2D variants, and the part is identified as 736L131 in stock. This 1-piece tool is engineered to produce flat-bottom holes with precise geometry, a geometry that can help reduce exit burrs and improve hole quality on challenging contours. Common applications include micro-machining tasks in electronics housings, precision assemblies, and other components where small-diameter, flat-bottom features are required on curved or angled surfaces. The MDF series remains a core offering from Sumitomo for external-coolant drilling and spot facing, delivering reliable carbide performance for demanding micro-diameter operations.