Viking Drill & Tool Super Premium Ultra Bor Mechanic Length Type 258-UB: 3-Flats on Shank - 3/8" Reduced Shank

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  • Special Hi-Molybdenum tool steel.
  • 135° split point for fast penetration and accurate starting without 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.
  • 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.
  • Specially designed for hand-held drills.
  • Flats on shank give positive chuck-grip (3/16 and larger).
  • Reduced shank with flats for positive chuck grip.
Item # DiameterFlute LengthOverall LengthUnit PricePack Quantity Price Add To Cart
Compare 81560 13/32 in2 13/16 in4 3/8 in$12.546 $75.23 Add to cart
Compare 81570 27/64 in2 7/8 in4 7/16 in$13.286 $79.66 Add to cart
Compare 81580 7/16 in2 15/16 in4 1/2 in$13.656 $81.90 Add to cart
Compare 81590 29/64 in3 in4 5/8 in$15.026 $90.12 Add to cart
Compare 81600 15/32 in3 1/8 in4 3/4 in$15.756 $94.48 Add to cart
Compare 81610 31/64 in3 1/4 in4 7/8 in$16.596 $99.52 Add to cart
Compare 81620 1/2 in3 3/8 in5 in$16.776 $100.64 Add to cart