I'm assuming you're referring to the NAS0331 specification, which is a standard for "Quality Management Systems - Requirements" published by the National Aerospace Standards (NAS) committee.
: Employs a rotary "tri-roller" tool to gently fold the bearing lip into the housing. This method is preferred for high-precision applications because it applies lower axial stress on the component. Why This Standard Matters nas0331 pdf
: Aircraft skin-to-frame attachments, structural repairs, and assemblies where access is limited to only one side (hence "blind"). How to Access the PDF I'm assuming you're referring to the NAS0331 specification,
6. ConclusionReiterate that adherence to NAS0331 ensures repeatable, high-strength retention essential for flight-critical components. 7. References Aerospace Industries Association (AIA), NAS0331 Standard. AeroStaking Technical Guide for NAS0331 Tooling. NAS0331 Bearing Specification Details. NAS0331 Bearing Specification Details | PDF - Scribd 7. References Aerospace Industries Association (AIA)
How to proceed (recommended steps)