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 mm	0/-0.006 mm	≤ 3 mm	0/-0.040 mm
> 3 ≤ 6 mm	0/-0.008 mm	> 3 ≤ 6 mm	0/-0.048 mm
> 6 ≤ 10 mm	0/-0.009 mm	> 6 ≤ 10 mm	0/-0.058 mm
> 10 ≤ 18 mm	0/-0.011 mm	> 10 ≤ 18 mm	0/-0.070 mm
> 18 ≤ 30 mm	0/-0.013 mm	> 18 ≤ 30 mm	0/-0.084 mm
> 30 ≤ 50 mm	0/-0.016 mm	> 30 ≤ 50 mm	0/-0.100 mm

≤ 0.118 inch	0/-0.00024 inch	≤ 0.118 inch	0/-0.0016 inch
> 0.118 ≤ 0.2362	0/-0.00031	> 0.118 ≤ 0.2362	0/-0.0019
> 0.2362 ≤ 0.3937	0/-0.00035	> 0.2362 ≤ 0.3937	0/-0.0023
> 0.3937 ≤ 0.7087	0/-0.00043	> 0.3937 ≤ 0.7087	0/-0.0028
> 0.7087 ≤ 1.1811	0/-0.00051	> 0.7087 ≤ 1.1811	0/-0.00331
> 1.1811 ≤ 1.9865	0/-0.00063	> 1.1811 ≤ 1.9865	0/-0.00393

SHANK DIA (h6)		CUTTING DIA (h7)
≤ 3 mm	0/-0.006 mm	≤ 3 mm	0/-0.010 mm
> 3 ≤ 6 mm	0/-0.008 mm	> 3 ≤ 6 mm	0/-0.012 mm
> 6 ≤ 10 mm	0/-0.009 mm	> 6 ≤ 10 mm	0/-0.015 mm
> 10 ≤ 18 mm	0/-0.011 mm	> 10 ≤ 18 mm	0/-0.018 mm
> 18 ≤ 30 mm	0/-0.013 mm	> 18 ≤ 30 mm	0/-0.021 mm
> 30 ≤ 50 mm	0/-0.016 mm	> 30 ≤ 50 mm	0/-0.025 mm

≤ 0.118 inch	0/-0.00024 inch	≤ 0.118 inch	0/-0.00039 inch
> 0.118 ≤ 0.2362	0/-0.00031	> 0.118 ≤ 0.2362	0/-0.00047
> 0.2362 ≤ 0.3937	0/-0.00035	> 0.2362 ≤ 0.3937	0/-0.00059
> 0.3937 ≤ 0.7087	0/-0.00043	> 0.3937 ≤ 0.7087	0/-0.00071
> 0.7087 ≤ 1.1811	0/-0.00051	> 0.7087 ≤ 1.1811	0/-0.00083
> 1.1811 ≤ 1.9865	0/-0.00063	> 1.1811 ≤ 1.9865	0/-0.00098

SHANK DIA (h6)		CUTTING DIA (H6)
≤ 3 mm	0/-0.006 mm	≤ 3 mm
> 3 ≤ 6 mm	0/-0.008 mm	> 3 ≤ 6 mm	0/+0.008
> 6 ≤ 10 mm	0/-0.009 mm	> 6 ≤ 10 mm	0/+0.009
> 10 ≤ 18 mm	0/-0.011 mm	> 10 ≤ 18 mm	0/+0.011
> 18 ≤ 30 mm	0/-0.013 mm	> 18 ≤ 30 mm	0/+0.013
> 30 ≤ 50 mm	0/-0.016 mm	> 30 ≤ 50 mm	0/+0.016

≤ 0.118 inch	0/-0.00024 inch	≤ 0.118 inch
> 0.118 ≤ 0.2362	0/-0.00031	> 0.118 ≤ 0.2362	0/+0.00034
> 0.2362 ≤ 0.3937	0/-0.00035	> 0.2362 ≤ 0.3937	0/+0.00035
> 0.3937 ≤ 0.7087	0/-0.00043	> 0.3937 ≤ 0.7087	0/+0.00043
> 0.7087 ≤ 1.1811	0/-0.00051	> 0.7087 ≤ 1.1811	0/+0.00051
> 1.1811 ≤ 1.9865	0/-0.00063	> 1.1811 ≤ 1.9865	0/+0.00063