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  • Users: gfthelen
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  1. gfthelen

    NAS 4002 Fastener Area Calculation. Aerospace UNJ Thread

    Hello All; Not sure this is the place for this question, but.... For this NAS 4002 Spec, Fastener Testing, Table III shows the Nominal Thread size and TPI, the Nominal Size (IN.) and the Thread pitch area at Max Dia. Then the values for Min Tensile for Types I, II and III. Is there a formula for...
  2. gfthelen

    NAS4002 Stress Area Calculations Aerospace Fasteners

    Hello All; Not sure this is the place for this question, but.... For this NAS 4002 Spec, Fastener Testing, Table III shows the Nominal Thread size and TPI, the Nominal Size (IN.) and the Thread pitch area at Max Dia. Then the values for Min Tensile for Types I, II and III. Is there a formula for...
  3. gfthelen

    NAS 4002 Fastener Tensile and Shear Testing Thread Pitch Area at max. Dia.

    Hello All; Not sure this is the place for this question, but.... For this NAS 4002 Spec, Fastener Testing, Table III shows the Nominal Thread size and TPI, the Nominal Size (IN.) and the Thread pitch area at Max Dia. Then the values for Min Tensile for Types I, II and III. Is there a formula...
  4. gfthelen

    Thread Pitch Standards

    Hi, It has been a long time since I have been to Eng-Tips, hope you can help. Is there ANY Standard, ASME, ASTM, SAE etc. that recommends the type of thread to use for certain fastening situations? When to use coarse thread vs. When to use Fine Threads? Other than 'Rule of Thumb" is what I am...
  5. gfthelen

    Nelson-Winlock Procedure n-Value

    Hello, I have an interest in the OLD School, 'Nelson-Winlock Procedure' I need the conversion chart or calculation from the stress/load values to the n-value. Does any one have a connection or a copy they can share? Thanks Gthelen

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