DIN 561 A - Hexagon Head Screws With Small Hexagon And Dog Point – Steel Standard Dimensions and Specifications
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- Steel: 4.8, 5.8, 8.8, 10.9, 12.9
- Stainless: A2,A4
Terminology and Measurements
- d – The Nominal Diameter of the Thread
- l – Length of Bolt
- s – Size Hex Head Turnkey
- b – Length of the Thread
- k – Head Height
- e – The Diameter of the Circumscribed Circle