Engineering resources

• Units stated on the drawingWithout units, a dimension can be read in millimetres or in inches.
• Material gradeThe grade decides machinability, finish options and the material certificate.
• Quantity or quantity breaksVolume decides between CNC and stamping, and the price per part.
• General tolerance class, for example ISO 2768-mIt sets the limits of every dimension that has no tolerance of its own.
• Critical dimensions with tolerancesWe plan setups and inspection around the dimensions that matter.
• Surface finish or Ra valueRoughness decides the last cutting pass and how it is checked.
• Threads with size, class and depthThe size alone does not tell us the fit or how deep to cut.
• Plating or coating specification and masked areasCoatings add thickness, and masked areas must stay bare.
• Revision number and dateThe quote and the parts are tied to one revision of the drawing.

Not on the drawing yet? We will ask.