They are designated by their nominal diameter d in mm prefixed by the letter 'M'.
METRIC EYE BOLT SIZES ISO
The standarized properties of metric bolts are specified in the international standard ISO 898-1:2009 'Mechanical properties of fasteners made of carbon steel and alloy steel - Part 1: Bolts, screws and studs with specified property classes - Coarse thread and fine pitch thread'.Īccording to ISO 898-1 the bolts are characterized depending on their pitch thread:
![metric eye bolt sizes metric eye bolt sizes](https://www.townleydropforge.com.au/wp-content/uploads/2017/04/Long-shank-Eyebolt.jpg)
Therefore for countersunk bolts the calculated tension resistance F t,Rd should be reduced by a factor of 0.63 / 0.9 = 0.7.
![metric eye bolt sizes metric eye bolt sizes](https://static.wixstatic.com/media/771a4e_4acd5307d7e14260949752796f805fa8~mv2_d_2332_2452_s_2.jpg)
![metric eye bolt sizes metric eye bolt sizes](https://www.clevelandcityforge.com/wp-content/uploads/2014/07/eyebolt-rated-capacity-diagram.jpg)
Only bolt assemblies of classes 8.8 and 10.9 may be used as preloaded bolts.
![metric eye bolt sizes metric eye bolt sizes](https://www.hdchasen.com/Content/Images/uploaded/eyebolt-shoulder-pattern-m72-x-6-bs72m_550.png)
Minimum edge distance perpendicular to load direction e 2 ( e 2 = 1.2 d 0) Minimum end distance along load direction e 1 ( e 1 = 1.2 d 0) Minimum end distance, edge distance, and spacing for bolt fasteners according to EN Table 3.3 (rounded up to nearest mm) Punching resistance per mm of plate thickness under bolt or nut B p,Rd / t p Shear resistance per shear plane F v,Rd īearing resistance per mm of connected plate thickness F v,Rd / t (for e 1≥3 d 0, e 2≥1.5 d 0, p 1≥3.75 d 0, p 2≥3 d 0) Design properties for metric hex bolts (Typical coarse pitch thread)