DIN 186 T-Head bolts with square neck Head Standard Dimensions and Specifications
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- Steel: 4.6, 8.8
- Stainless: A2,A4
Terminology and Measurements
- l – Length of Bolt
- d – The Nominal Diameter of the Thread
- k – Head Height
- e – The Diameter of the Circumscribed Circle
- s – Head Width
- a1 – Length Undercut
- dp – Diameter of the Ejector
- r – Head Radius
- k´ – Minimum Size of the Head on the Key
- n – Head Thickness
- r1 – Radius
- u – Thread Run
- lg – Length of the Shank to Thread
- ls – Length of the Shank to the Start of the Thread