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A high quality American-made jobber drill bit made by Triumph Twist Drill Co. These jobber twist bits are made of High Speed Steel to hold their sharp cutting edges longer, & have a bright finish. These twist bits are for general purpose drilling in a variety of materials. They will work well in hard & softwoods, aluminum, aluminum alloys, brass, bronze - soft & medium, & plastics. Made in the USA.
Triumph Twist Drill has manufactured High-Quality cutting tools for over 50 years. Starting in 1952, founder Harry Beck set out to provide customers with a product that the drill industry had been lacking. Harry, along with his son Jim and Cy Brock, decided to enter the small drill business and create quality, handmade products with the customer in mind.
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Drill Bit Diameter Decimal Equivalent Flute Length Overall Length Model 1/64" .0156 3/16" 3/4" 011001 1/32" .0312 1/2" 1 - 3/8" 011002 3/64" .0469 3/4" 1 - 3/4" 011003 1/16" .0625 7/8" 1 - 7/8" 011004 5/64" .0781 1" 2" 011005 3/32" .0938 1 - 1/4" 2 - 1/4" 011006 7/64" .1094 1 - 1/2" 2 - 5/8" 011007 1/8" .1250 1 - 5/8" 2 - 3/4" 011008 9/64" .1406 1 - 3/4" 2 - 7/8" 011009 5/32" .1562 2" 3 - 1/8" 011010 11/64" .1719 2 - 1/8" 3 - 1/4" 011011 3/16" .1875 2 - 5/16" 3 - 1/2" 011012 13/64" .2031 2 - 7/16" 3 - 5/8" 011013 7/32" .2188 2 - 1/2" 3 - 3/4" 011014 15/64" .2344 2 - 5/8" 3 - 7/8" 011015 1/4" .2500 2 - 3/4" 4" 011016 17/64" .2656 2 - 7/8" 4 - 1/8" 011017 9/32" .2812 2 - 15/16" 4 - 1/4" 011018 19/64" .2969 3 - 1/16" 4 - 3/8" 011019 5/16" .3125 3 - 3/16" 4 - 1/2" 011020 21/64" .3281 3 - 5/16" 4 - 5/8" 011021 11/32" .3438 3 - 7/16" 4 - 3/4" 011022 23/64" .3594 3 - 1/2" 4 - 7/8" 011023 3/8" .3750 3 - 5/8" 5" 011024 25/64" .3906 3 - 3/4" 5 - 1/8" 011025 13/32" .4062 3 - 7/8" 5 - 1/4" 011026 27/64" .4219 3 - 15/16" 5 - 3/8" 011027 7/16" .4375 4 - 1/16" 5 - 1/2" 011028 29/64" .4531 4 - 3/16" 5 - 5/8" 011029 15/32" .4688 4 - 5/16" 5 - 3/4" 011030 31/64" .4844 4 - 3/8" 5 - 7/8" 011031 1/2" .5000 4 - 1/2" 6" 011032