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Bolt Circle Calculator

 Calculator Menu

Enter values below to calculate the coordinates of the holes in a bolt circle.

Number of Holes N
Diameter of Bolt Circle D   in  mm
Diameter of Holes d 
Angle of First Hole A  degrees
Offset of Center X     Y 
 
 
Bell Punch Center Finder
Bell Punch Center Finder
  • A handy tool if with you require precise drilling on round stock.
  • Works on stock up to 35mm (1 3/8")
  • Made of hardened steel - 48-52 HRC
  • Overall length 80 mm (3-9/64")
  • Shank length and diameter 9.5mm (3/8")

$19.95
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Tap & Die Set, 39-Piece Solid Round Dies
Tap & Die Set, 39-Piece Solid Round Dies
  • 39-piece machine screw & fractional tap and solid round die set
  • Machine screw and fractional sizes of plug style taps plus 1" solid round dies
  • Includes three tap handles and two die stocks
  • 18-leaf standard thread pitch gauge and screwdriver
  • Plastic case with lift-out tray

$269.95
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Chip Shield, Magnetic for 3" - 4" Vise, Clear
Chip Shield, Magnetic for 3" - 4" Vise, Clear
  • Milling machine chip shield uses strong Neodymium magnets to mount to the front or back of a machine
  • Conveniently remove without the hassle of fussing with tools or screws
  • Adjustable friction hinges allow setting the side panels at any angle up to 150 degrees
  • Compatible with any 3"- 4" milling vise with a flat surface on either end
  • Approximate dimensions: 11 1/4" x 3 3/4" x 1/4"

$39.95
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