Tolerance Capabilities for Custom Metal Fabrication and CNC Machining
Please note that these tolerance capabilities are average tolerances. Actual results may vary slightly by design/material requirements.
Material Thickness, single pass rolling
0.008 inches Total RangeFormed Wall thickness
0.004 inches Total RangeRadial hole location, degrees
±1 degreeInside Diameter
Without expanding
±0.005 inches
With expanding up to 10” diameter
±0.002 inches
With expanding 10 – 18” diameter
±0.004 inches
Rolled Ring Expanded
Out of round, free state form, 2.5″ to 4″
0.020 Total Range
4″ to 6″
0.030 Total Range
6″ to 10″
0.045 Total Range
10″ to 13″
0.060 Total Range
13″ to 16″
0.093 Total Range
16″ to 19″
0.125 Total Range
Lock Seam
Out of round, 1″ to 2.5″
0.020 Total Range
2.5″ to 4″
0.035 Total Range
4″ to 6″
0.045 Total Range
6″ to 10″
0.062 Total Range
10″ to 13″
0.093 Total Range
13″ to 16″
0.125 Total Range
16″ to 19″
0.187 Total Range
Lock Seam Perpendicularity
bumped up to 4.5” diameter
0.010 Total Range
Unbumped up to 19” diameter
0.060 Total Range
Ring Length
bumped up to 6.5” diameter
±0.005 inches
Unbumped 1.5” to 6” diameter
±0.025 inches
Large ring 6″ to 19” diameter
±0.032 inches
Axial hole location from the gaged edge
Internal punch & button
±0.015 inches
Within a die set
±0.005 inches
From CNC axial datum edge
±0.005 inches
Unbumped offset axial
1″ to 6” diameter
0.015 Total Range
6″ to 18” diameter
0.030 Total Range
Base location from ring edge
±0.02 inchesBase location radial, degrees
±1 degreeWeld spot location
±0.125 inchesCNC machining tolerances
Length cutoff
±.004 inches
Parallelism
.005 Total
Perpendicularity
.005 Total
Internal and external dia turning
±0.005 inches
Depth of (rabbets)
±0.015 inches
WD Info
ISO 9001 Registered
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