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2. Drill bit sizes - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_sizes

   Fractional drill bit set by Craftsman. Fractional-inch drill bit sizes are still in common use in the United States and in any factory (around the globe) that makes inch-sized products for the U.S. market. ANSI B94.11M-1979 sets size standards for jobber-length straight-shank twist drill bits from 1/64 inch through 1 inch in 1/64 inch increments.

3. List of drill and tap sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

   Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.

4. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   While the above is a common use of center drill bits, it is a technically incorrect practice and should not be considered for production use. The correct tool to start a traditionally drilled hole (a hole drilled by a high-speed steel (HSS) twist drill bit) is a spotting drill bit (or a spot drill bit, as they are referenced in the U.S.). The ...

5. List of tool manufacturers - Wikipedia

   en.wikipedia.org/wiki/List_of_tool_manufacturers

   Milwaukee, Hart, Ridgid power tools, [31] Ryobi, Homelite, Hoover, Vax, [32] Bissell, Dirt Devil. [33] Hand-held power tools TTS Tooltechnic Systems: Wendlingen, Germany Festool, Tanos, SawStop: Hand-held power tools, dust extraction tools, workplace organization United Pacific Industries Ltd: Spear & Jackson: Hand tools and garden tools

6. Tap and die - Wikipedia

   en.wikipedia.org/wiki/Tap_and_die

   US tap and drill bit size and reference chart [7] Machine screw size Number of threads per inch (TPI) Major diameter Minor diameter Tap drills Clearance drill 75% thread for aluminum, brass, & plastics 50% thread for steel, stainless, & iron Close fit Free fit Drill size Decimal equiv. Drill size Decimal equiv. Drill size Decimal equiv. Drill size

7. Power tool - Wikipedia

   en.wikipedia.org/wiki/Power_tool

   At this point, the Hole-Shooter, a drill that weighed 5 lbs. was created by A. H. Peterson. The Peterson Company eventually went bankrupt after a devastating fire and recession , but the company was auctioned off to A. F. Siebert, [ 21 ] a former partner in the Peterson Company, in 1924 and became the Milwaukee Electric Tool Company .