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  1. Metalsmythe1977

    BACB30FM Test Report "Too Short"

    I'm looking at a Quality Assurance And Reliability Test Report for a batch of BACB30FM8-6 pins we recieved and under the "Ultimate Tensile Strength/Pounds" column the entry reads "too short". The same entry was made in the "Tension/Tension Fatigue Life/Cycles" column. Any concerns I should be...
  2. Metalsmythe1977

    E-Drill usage on composite panel fasteners

    Does anyone have experience or feedback on the use of "E-Drill" to remove blind fasteners on composite structure? The system uses a precision EDM electrode with a built-in water flushing system to prevent heat damage. The EDM cuts the fastener head enought to allow for easy shank removal...
  3. Metalsmythe1977

    Brush Plating Standard for 17-4PH Repair Bushings

    Does anyone know the recommended standard for brush plating cadmium on 17-4PH repair bushings?
  4. Metalsmythe1977

    Rivet Symbol Legend on older engineering drawings

    Does anyone know the history/background on legacy aircraft drawings that have a "Rivet Symbol Legend" block on the upper right corner of the drawing title page? They show a basic circle, basic circle with a diagonal, etc. depending on the solid rivet head style and diameter. Was there a code...
  5. Metalsmythe1977

    MS20470 Raised Head Rivet Allowable Head Damage

    Does anyone know of some good references for raised head rivet (installed) inspection criteria? I have an aircraft with numerous MS20470AD4/5 rivets that have mechanical damage to the raised heads from a power tool. Some damage is very minor; while some are almost flat to flush with the...
  6. Metalsmythe1977

    Defective Standard Hardware - MS21042, NAS1291 self-locking nut failures

    Has anyone been up to speed on the defective MS21042/NAS1291 self-locking nuts being reported due to improper cad coating processes? Any wisdom from the Forum would be appreciated.
  7. Metalsmythe1977

    1.15 Fitting Factor

    Can someone summarize in laymans terms the application of 1.15 "fitting factor" in aircraft joint analysis? Thanks!

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