High-quality HSS (DMO5) steel, hardness on the cutting part = up to d1 = 3.0 mm min. 61 HRC, 3.0 to 6.0 mm at least 62 HRC, over 6.0 mm 63 HRC / hardness on the shaft min. 45 HRC, thread: metric DIN ISO 13, cutting direction: right-hand cutting, PGEWB M3: thread core hole: 2.5 mm, thread length: 10 mm, PGEWB M4: thread core hole: 3.3 mm, thread length: 12 mm, PGEWB M5: thread core hole: 4.2 mm, thread length: 13 mm, PGEWB M6: thread core hole: 5.0 mm, thread length: 15 mm, PGEWB M8: thread core hole: 6.8 mm, thread length: 18 mm, PGEWB M10: thread Core hole: 8.5 mm, thread length: 24 mm, PGEWB M12: thread core hole: 10.2 mm, thread length: 29 mm,
