Viking Drill & Tool Super Premium Ultra Bor Type 240-UB Jobber Length Drills: Letter

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Ultra Bor Super Premium – 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—low temperature stress relief improves lubricity and toughness.

Manufactured to NAS 907B specification from Premium Hi-Molybdenum Steel.

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. Sizes smaller than #52 have non-split points.

Ultra Bor will substantially outperform cobalt drills in work hardening stainless steel and other tough drilling applications.
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Item # FluteLetter SizeOverall LengthManufacturerUnit PricePack Quantity Price Add To Cart
Compare 39460 2 5/8 inA3 7/8 inViking Drill & Tool$3.6212 $43.41 Add to cart
Compare 39470 2 3/4 inB4 inViking Drill & Tool$3.6212 $43.41 Add to cart
Compare 39480 2 3/4 inC4 inViking Drill & Tool$3.6212 $43.41 Add to cart
Compare 39490 2 3/4 inD4 inViking Drill & Tool$3.4712 $41.60 Add to cart
Compare 39500 2 3/4 inE4 inViking Drill & Tool$3.1812 $38.12 Add to cart
Compare 39510 2 7/8 inF4 1/8 inViking Drill & Tool$3.8812 $46.59 Add to cart
Compare 39520 2 7/8 inG4 1/8 inViking Drill & Tool$4.1912 $50.32 Add to cart
Compare 39530 2 7/8 inH4 1/8 inViking Drill & Tool$4.3012 $51.57 Add to cart
Compare 39540 2 7/8 inI4 1/8 inViking Drill & Tool$4.3012 $51.57 Add to cart
Compare 39550 2 7/8 inJ4 1/8 inViking Drill & Tool$4.5212 $54.18 Add to cart
Compare 39560 2 15/16 inK4 1/4 inViking Drill & Tool$5.0312 $60.41 Add to cart
Compare 39570 2 15/16 inL4 1/4 inViking Drill & Tool$4.8912 $58.67 Add to cart
Compare 39580 3 1/16 inM4 3/8 inViking Drill & Tool$5.356 $32.07 Add to cart
Compare 39590 3 1/16 inN4 3/8 inViking Drill & Tool$5.356 $32.07 Add to cart
Compare 39600 3 3/16 inO4 1/2 inViking Drill & Tool$5.356 $32.07 Add to cart
Compare 39610 3 5/16 inP4 5/8 inViking Drill & Tool$6.006 $36.00 Add to cart
Compare 39620 3 7/16 inQ4 3/4 inViking Drill & Tool$6.186 $37.06 Add to cart
Compare 39630 3 7/16 inR4 3/4 inViking Drill & Tool$6.446 $38.61 Add to cart
Compare 39640 3 1/2 inS4 7/8 inViking Drill & Tool$6.966 $41.73 Add to cart
Compare 39650 3 1/2 inT4 7/8 inViking Drill & Tool$7.816 $46.83 Add to cart
Compare 39660 3 5/8 inU5 inViking Drill & Tool$7.686 $46.09 Add to cart
Compare 39670 3 5/8 inV5 inViking Drill & Tool$7.996 $47.96 Add to cart
Compare 39680 3 3/4 inW5 1/8 inViking Drill & Tool$9.096 $54.56 Add to cart
Compare 39690 3 3/4 inX5 1/8 inViking Drill & Tool$9.976 $59.79 Add to cart
Compare 39700 3 7/8 inY5 1/4 inViking Drill & Tool$11.686 $70.07 Add to cart
Compare 39710 3 7/8 inZ5 1/4 inViking Drill & Tool$11.926 $71.50 Add to cart