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Standard Tolerance

Cobra Carbide continues to invest in state-of-the-art equipment such as Walters, Rolomatic, TrueTech and more. Each tool is designed and inspected to ensure precision, consistency and everything you expect of a well-made tool. Our standard cutting tools are manufactured to the following tolerances:
Cutting Diameter on Standard End Mills: +.000/-.002
Cutting Diameter on Roughing End Mills: +.000/-.005
Ball Nose: +.000/-.002
Shank Diameter: -.0001/-.0004
Radius: +.001/-.001
Run-Out Tolerance: .0005 maximum shank to cutting diameter on all except Long Length
Run-Out Tolerance: .0005 maximum shank to cutting diameter on all except Long Length If you need tools designed to a different specification, we’ll be glad to help. Specials are one of our many strengths.

tolerance chart - metric & imperial

Endmill
Drill
Reamer
SHANK DIA (h6)CUTTING DIA (h10)
≤ 3 mm0/-0.006 mm≤ 3 mm0/-0.040 mm
> 3 ≤ 6 mm0/-0.008 mm> 3 ≤ 6 mm0/-0.048 mm
> 6 ≤ 10 mm0/-0.009 mm> 6 ≤ 10 mm0/-0.058 mm
> 10 ≤ 18 mm0/-0.011 mm> 10 ≤ 18 mm0/-0.070 mm
> 18 ≤ 30 mm0/-0.013 mm> 18 ≤ 30 mm0/-0.084 mm
> 30 ≤ 50 mm0/-0.016 mm> 30 ≤ 50 mm0/-0.100 mm
≤ 0.118 inch0/-0.00024 inch≤ 0.118 inch0/-0.0016 inch
> 0.118 ≤ 0.23620/-0.00031> 0.118 ≤ 0.23620/-0.0019
> 0.2362 ≤ 0.39370/-0.00035> 0.2362 ≤ 0.39370/-0.0023
> 0.3937 ≤ 0.70870/-0.00043> 0.3937 ≤ 0.70870/-0.0028
> 0.7087 ≤ 1.18110/-0.00051> 0.7087 ≤ 1.18110/-0.00331
> 1.1811 ≤ 1.98650/-0.00063> 1.1811 ≤ 1.98650/-0.00393
SHANK DIA (h6)CUTTING DIA (h7)
≤ 3 mm0/-0.006 mm≤ 3 mm0/-0.010 mm
> 3 ≤ 6 mm0/-0.008 mm> 3 ≤ 6 mm0/-0.012 mm
> 6 ≤ 10 mm0/-0.009 mm> 6 ≤ 10 mm0/-0.015 mm
> 10 ≤ 18 mm0/-0.011 mm> 10 ≤ 18 mm0/-0.018 mm
> 18 ≤ 30 mm0/-0.013 mm> 18 ≤ 30 mm0/-0.021 mm
> 30 ≤ 50 mm0/-0.016 mm> 30 ≤ 50 mm0/-0.025 mm
≤ 0.118 inch0/-0.00024 inch≤ 0.118 inch0/-0.00039 inch
> 0.118 ≤ 0.23620/-0.00031> 0.118 ≤ 0.23620/-0.00047
> 0.2362 ≤ 0.39370/-0.00035> 0.2362 ≤ 0.39370/-0.00059
> 0.3937 ≤ 0.70870/-0.00043> 0.3937 ≤ 0.70870/-0.00071
> 0.7087 ≤ 1.18110/-0.00051> 0.7087 ≤ 1.18110/-0.00083
> 1.1811 ≤ 1.98650/-0.00063> 1.1811 ≤ 1.98650/-0.00098
SHANK DIA (h6)CUTTING DIA (H6)
≤ 3 mm0/-0.006 mm≤ 3 mm
> 3 ≤ 6 mm0/-0.008 mm> 3 ≤ 6 mm0/+0.008
> 6 ≤ 10 mm0/-0.009 mm> 6 ≤ 10 mm0/+0.009
> 10 ≤ 18 mm0/-0.011 mm> 10 ≤ 18 mm0/+0.011
> 18 ≤ 30 mm0/-0.013 mm> 18 ≤ 30 mm0/+0.013
> 30 ≤ 50 mm0/-0.016 mm> 30 ≤ 50 mm0/+0.016
≤ 0.118 inch0/-0.00024 inch≤ 0.118 inch
> 0.118 ≤ 0.23620/-0.00031> 0.118 ≤ 0.23620/+0.00034
> 0.2362 ≤ 0.39370/-0.00035> 0.2362 ≤ 0.39370/+0.00035
> 0.3937 ≤ 0.70870/-0.00043> 0.3937 ≤ 0.70870/+0.00043
> 0.7087 ≤ 1.18110/-0.00051> 0.7087 ≤ 1.18110/+0.00051
> 1.1811 ≤ 1.98650/-0.00063> 1.1811 ≤ 1.98650/+0.00063
NOTE:

1) FOR DIAMETER LESS THAN 2MM SEC, OD ANGLE IS ZERO.
2) FOR 3,5,6 FLUTE TOOLS PRIMARY = 6° – 10°, SEC = 14° – 20°

Cobra Carbide is the premier provider of Solid Carbide Endmills, Drills, Reamers, Burrs, Inserts and Made to Print Specials

We’re proud that our tools are being made here in the USA

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