Item # 49520, Viking Drill & Tool Super Premium Ultra Bor Metric Drills Jobber Length Type 643-UB


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Special Hi-Molybdenum tool steel with 135° split point for fast penetration and accurate starting without a center punch. Precision-ground point, flutes, body, clearance, and drill diameter for the ultimate in accuracy and performance. Body and clearance are gold surface treated for maximum lubricity.

Drills are heat-treated at 2185° F and then nitro-carburize finished at 950° F to be measurably harder than high speed steel. Space age nitro-carburized steel withstands substantially higher drilling temperatures while maintaining sharpness. Recommended for use in work hardening grades of stainless steel and other hard metal drilling applications.
ManufacturerViking Drill & Tool
Overall Length4 1/8 in
Unit Price$3.63
Pack Quantity10