I frequently get questions about the precise sizing of the Hunter carbide cutters, since we have customers that manufacture their own tools.
In addition to the detail below, we’ve added a full sized table here.
Diameter Metric: 6mm
Diameter Inch (approx): 0.236 or 15/64
Hunter Screw: #1
Screw Threads or tap size: M2.5-0.45
Torx Wrench: T-9
Diameter Metric: 8mm
Diameter Inch (approx): 0.315 or 5/16
Hunter Screw: #2
Screw Threads or tap size: M3-.5
Torx Wrench: T-9
Diameter Metric: 10mm
Diameter Inch (approx): 0.394 or 3/8
Hunter Screw: #3/#4/#5
Screw Threads or tap size: M4-.7
Torx Wrench: T-15
Diameter Metric: 12mm
Diameter Inch (approx): 0.472 or 1/2
Hunter Screw: #3/#4/#5
Screw Threads or tap size: M4-.7
Torx Wrench: T-15
I updated the descriptions of the cutters so the information is handy right on the product page.