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Bolt Circle Calculator

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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 
 
 
DRO Scale, 12" (300 mm) with Display
DRO Scale, 12" (300 mm) with Display
  • 12" travel stainless steel scale
  • Absolute origin zero memorized when unit is powered on
  • Large LCD displays in inch/metric/fractions
  • Articulating arm allows stacking of multiple displays
  • IP54 Protective rating: Moisture and dust resistance

$99.95
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Disc Cutter Set, 1/4-5/8", 7 Piece
Disc Cutter Set, 1/4-5/8", 7 Piece
  • 7 Piece 1/4-5/8" Disc Cutter Set
  • Set includes 1/4, 5/16, 3/8, 7/16, 1/2, 9/16 & 5/8" disc sizes
  • Punches are made of case-hardened tool steel
  • The top and bottom plates are made of durable shock-resistant tool steel through hardened for long-w
  • Round disc cutters let you cut perfectly round discs in up to 1mm (18 gauge) thick metal sheets

$54.95
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Lathe Chuck, 3-Jaw 4" Premium, Harlingen
Lathe Chuck, 3-Jaw 4" Premium, Harlingen
  • Self-centering 3-Jaw lathe chuck
  • 4" (100 mm) diameter
  • Radial runout maximum of ≤ 0.002" (0.05 mm)
  • High quality components for enhanced wear-resistance
  • Includes chuck key, inside and outside jaws

$139.95
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