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  1. ISO4032>

  2. DIN 934 >

  3. ANSI/ASME B18.2.2>

  4. UNI5587>

  5. BS1083>

  6. DIN6915>

  7. A563 M>

  8. A194-2H>

  9. DIN439/936>

  10. Flange Nuts>

  11. NON-Standard>

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