En Iso 13920-bf

On a technical drawing:

For the Quality Control (QC) department, this standard provides a black-and-white rulebook. If a part is out of tolerance, it is rejected. If it is within the range, it is accepted. There is no room for subjective debate. en iso 13920-bf

If you have recently come across a technical drawing with the notation "EN ISO 13920-BF" in the title block, you may be wondering what it means for your production floor, your quality control department, or your budget. In this comprehensive guide, we will dissect the standard, explain the "BF" designation, and show you how to apply it correctly to avoid costly rework. On a technical drawing: For the Quality Control

When a technical drawing specifies , it acts as a "safety net" for the manufacturer. Any dimension on the drawing that does not have a specific tolerance assigned to it automatically falls under the rules of Class B (for length/angle) and Class F (for shape). This is critical in industries such as: There is no room for subjective debate

: Engineers don't have to label every single weld with a specific tolerance; they simply cite "ISO 13920-BF" in the title block.