GP SYSTEM (SINGAPORE) PTE LTD - FERG [Circular Dies]

Circular Dies
for hand or machine threading

    Steels with good machinability
    Rm < 750 N/mm² (101,500 PSI)
    Nodular graphite, Malleable cast iron


500

   LAPPED THREAD:
   Gun-nose from M4 (M4 included), driving the chips ahead.
   1.75 thread chamfer lead on both sides.
   Rake angle 15°÷17°.

   FOR TAPER THREADS:
   Unlapped thread.
   Without Gun-nose. Chamfer lead only on one side.


501

   Gun-nose from M4 (M4 included), driving the chips ahead.
   1.75 thread chamfer lead on both sides.
   Rake angle 15°÷17°.

   FOR TAPER THREADS:
   Without Gun-nose. Chamfer lead only on one side.

    Heat treated and heat-resistant steels
    Rm < 1,000 N/mm²
       (<30 HRC / <290 HB / <145,000 PSI)


520

   LAPPED THREAD:
   Gun-nose from M4 (M4 included), driving the chips ahead.
   2.25 thread chamfer lead on both sides.
   Rake angle 10°÷12°.

   FOR TAPER THREADS:
   Unlapped thread.
   Without Gun-nose. Chamfer lead only on one side.

    Stainless steels and structural steels
    Rm < 600 N/mm²
       (<200 HB / <101,000 PSI)


V500

Short chip brass, Bronze


505
T505

   THREAD EXTRA LAPPED:
   Gun-nose from M4 (M4 included), driving the chips ahead.
   1.25 thread chamfer lead on both sides.
   Rake angle 3°÷7°.

   FOR TAPER THREADS:
   Unlapped thread.
   Without Gun-nose. Chamfer lead only on one side.

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