Dimensional tolerances / Form- location- and orientation tolerances Internal thread plain / with surface coating: Tolerance 6-HĮxternal thread with surface coating: Tolerance 6-hĮxecution optionally cut, turned, grooved, rolled, milled or whirled The workpiece can warp, whereby the defined position tolerances can not be guaranteed or simply can not be produced. It should be noted that parts with too thin walls, made of materials with low strength, can have an impact on the manufacturing process.