Bolt Hole Circle (BHC)
Measurement system
Metric (mm)
Imperial (in)
Decimals
Number of holes
Hole diameter (mm)
Bolt circle diameter (mm)
Input is
Diameter
Radius
Start angle (°)
Direction
CCW (+)
CW (-)
Center offset X (mm)
Center offset Y (mm)
Calculate
Save Settings (JSON)
Load Settings
Preset name
Save code
Save Preset (Server)
Only users with the Save Code can create or delete presets.
Radius:
50.000
mm
Step:
60.000
°
Start:
0.000
°
Dir:
CCW
Hole Ø:
0.000
mm
hole,angle_deg,x_mm,y_mm 1,0.000,50.000,0.000 2,60.000,25.000,43.301 3,120.000,-25.000,43.301 4,180.000,-50.000,0.000 5,240.000,-25.000,-43.301 6,300.000,25.000,-43.301
CSV: hole,angle_deg,x_mm,y_mm (origin at circle center; +X right, +Y up)
#1 (50.000, 0.000)
#2 (25.000, 43.301)
#3 (-25.000, 43.301)
#4 (-50.000, 0.000)
#5 (-25.000, -43.301)
#6 (25.000, -43.301)
0° at +X • angles CCW (+) • units: mm
#
Angle (°)
X (mm)
Y (mm)
1
0.000
50.000
0.000
2
60.000
25.000
43.301
3
120.000
-25.000
43.301
4
180.000
-50.000
0.000
5
240.000
-25.000
-43.301
6
300.000
25.000
-43.301
Hole circles are drawn to scale using the specified hole diameter. To position to a part datum, use X/Y offsets.
Presets
6 x 6.25
6-x-6.25
2025-12-03 21:15
inches
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