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BSW Whitworth Split Dies

  • A split die is intended for cleaning threads, re-threading or threading on mild steel or aluminium, and when you need to replicate threads with a decent amount of accuracy.
  • Is is usually round, cut on one end, and there is a little setscrew threaded in between the split. As you tighten this set screw, the die expands. loosen it, the clamping from the die stock closes the gap.
  • They are the correct dies to use if you were to cut your own threads in a piece of round stock.
  • The other use for these is to adjust the screw so that the die fits existing threads tightly, the continue these threads.
  • Material : Hardened and Tempered Carbon Steel
  • Pitch: Standard
  • Shape: Round
  • Sizes – Various
    • BSW 13/16″ OD
    • BSW 1″ OD
    • BSW 1.1/2″ OD