When inspecting enlarged holes for tolerance, how often should the holes be inspected after the first one?

When inspecting enlarged holes for tolerance, the best practice is to inspect every 10th hole after the initial one. This method balances efficiency with the need to ensure that the specifications are maintained throughout the assembly process.

By inspecting every 10th hole, you can identify any potential issues or variations in the machining process without slowing down production excessively. This sampling approach allows for a thorough quality control process while also keeping in mind the practical constraints of time and resources in an aerospace manufacturing environment. Regular but spaced inspections can help avoid the risk of missing defects while still maintaining an effective workflow.

Other intervals, such as inspecting every hole, may be too rigorous for practical implementation and could hinder production, while inspecting every 20th hole may not provide sufficient oversight to catch issues early on. Therefore, inspecting every 10th hole offers a sensible compromise for maintaining accuracy in the tolerance of enlarged holes.