: 0.7 mm for M4, 0.8 mm for M5, 1.0 mm for M6, etc. .
One reason the was so highly regarded was its strict control over dimensions. The standard covered: din 1624 standard pdf
The standard covers several key aspects, including: : 0.7 mm for M4
For legal and compliance reasons, the most reliable source is the original publisher. 0.8 mm for M5
The standard implicitly supports a three-step installation logic:
: Focuses on elasticity, plasticity (permanent deformation without damage), and impact toughness.