Hexagon Bolt (DIN 931 / ISO 4014)

All measurements in millimeters (mm) 

 Thread Diameter

 Washer Face (e)

Across Corners (e)  

Across Corners (e)  

 Head Height (k)

 Across Flats (s)

mm

 Min  Max  Min (Grade A) Min (Grade B) Nominal Size Nominal Size
             
M4 0.15 0.5 7.66 - 2.8 7
M5 0.15 0.5 8.79 - 3.5 8
M6 0.15 0.5 11.05 - 4 10
M7 0.15 0.5 12.12 - 4.8 11
M8 0.15 0.6 14.38 - 5.3 13
M10 0.15 0.6 18.9  - 6.4 17
M12 0.15 0.6 21.1 - 7.5 19
M14 0.15 0.6 24.49 - 8.8 22
M16 0.2 0.6 26.75 26.17 10 24 
M18  0.2 0.8  30.14 29.56 11.5 27
M20  0.2 0.8 33.53 32.95 12.5 30
M22 0.2 0.8 35.72 35.03 14 32
M24 0.2 0.8 39.98 39.55 15 36
M27 0.2 0.8 - 45.2 17 41
M30 0.2 0.8 - 50.85 18.7 46
M33 0.2 0.8 - 55.37 21 50
M36 0.2 0.8 - 60.79 22.5 55
M39 0.2 1 - 66.44 25 60

 

Dimensional Standard for DIN 931 Hexagon Bolts, which shares many characteristics with ISO 4014.

Bolt King can manufacture Hexagon Bolts to DIN 931 and ISO 4014 in standard alloy steels (eg. 8.8, 10.9, 12.9), stainless steels (eg. A2, A4, 304, 316, 310, 410), as well as high-nickel exotic alloys (eg. Duplex, Super Duplex, INCONEL 718 and 660) and Petro-chemical grades (B7, L7, B8, B8M, L43).

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The information provided above is for reference only. Please contact us for further information.

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