Drill America D/ASTCO57/64 57/64" Cobalt Heavy Duty Split Point Stub Drill Bit, D/ASTCO57/64 Shop by Category > Engine > Oil>Tools Brush Research BMC20AY500AO Bmc-20ay 500ao

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Drill America D/ASTCO57/64 57/64" Cobalt Heavy Duty Split Point Stub Drill Bit, D/ASTCO57/64 Shop by Category > Engine > Oil>Tools Brush Research BMC20AY500AO Bmc-20ay 500aoDrill America D ASTCO57 64 57 64" Cobalt Heavy Duty Split Point Stub Drill Bit, D ASTCO57 64 Screw machine drills (also know as stub or stubby drills) are manufactured to Aerospace Standard 907. The 135 degree split point is self centering and reduces thrust. Ideal for portable or machine drilling. Short, rugged construction performs well in a broad range of materials in the iron and steel families. Screw machine drills are popular in the automotive