According to DIN 5480, 5481 and others
XL, T 0,08 and others , pitch up to 6,25 mm or 1/4 " máx.
with pitch 1/4" or finer up to OD 120 mm.
Com uma ou múltiplas entradas até módulo 2 ou DP 12.
Straight, helical or crossed
with single and multi starts, up to pitch 4mm or 6 TPI.
Machined with a process equivalent to shaving. Crown obtained by copying.