PHP 7.4.30, Port 443
Session Debug is ON
Session ID ZR7Mz
Azure Web App Development Site
Menu

Bolt Circle Diameter Calculator

Calculator Menu

Enter values below to calculate the diameter of a bolt circle.

Number of Holes N
Center Distance Between Adjacent Holes in mm
 

Tip:

To measure the center distance between two holes of equal diameter with an electronic caliper.

1. Use the inside jaws to measure the diameter of one of the holes. Before you remove the caliper from the hole, press the button to zero the caliper while it is set to the diameter of the hole.

2. Still using the inside jaws, measure the distance between the far surfaces of the two holes. The caliper reading is the distance between centers of the two holes.

 
HiTorque 6450 Deluxe LED Mini Mill
  • All the Features of the HiTorque 3990 (brushless motor, gearless spindle drive, solid column, etc.)
  • LED display with illuminated controls and integrated spindle speed readout
  • 3-axis Bluetooth DRO w/tablet on X, Y, and Z-axis
  • Largest table and X-Y travel in its class
  • Aluminum hand wheels and drill press handles

$2,199.00

More products like this
Sensitive Drill Feed and 1/8" (3 mm) Keyless Drill Chuck
  • Fingertip control for drilling small holes
  • Helps prevent drill breakage
  • 0JT taper, 1/2" diameter precision ground straight shank
  • Spring loaded 3/4” travel fits most drills, mills, lathes or jig borers
  • Capacity: 0” - 1/8" (0 - 3mm ) Keyless drill chuck

$164.95

More products like this
Transfer Punch Set, Sizes #1-60, 60 Piece
  • 60 Piece #1-60 Transfer Punch Set
  • Range is #1 to #60
  • Heat treated and tempered tool steel for long life
  • Transfer punches are 0.0025" undersize for precise fit

$28.95

More products like this