There are two Faston versions:

• For the standard speakON series (except NL4MP-UC):
  4.8 x 0.5 Fastons, just order NLFASTON
  An isolated Faston can be ordered eg. at Tyco part # 9-160477-2
• For the speakON STX series and NL4MP-UC:
  6.3 x 0.8 mm Fastons, which can be ordered e.g. at Tyco part # 41829