Chemical Composition As per DIN 267-4 Class C max. Mn min. P max. S max. 4, 5 and 6 0.50 - 0.110 0.150 8 0.58 0.30 0.060 0.150 10 0.58 0.30 0.048 0.058 12 0.58 0.45 0.048 0.058 Mechanical Properties As per DIN 267-4 Property Class 4 Class 5 Class 6 Class 8 Class 10 Class 12 Proof load stress
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Selected small sizes Dimension (d) M4 M5 M6 M8 M10 Thread pitch (pa) 0.7 0.8 1 1.25 1.5 m 2.9-3.2 3.7-4 4.7-5 6.14-6.5 7.64-8 dw (min) 5.8 6.8 8.8 11.3 15.3 s 6.78-7 7.78-8 9.78-10 12.73-13 16.73-17 e (min) 7.66 8.79 11.05 14.38 18.9 Selected standard sizes Dimension (d) M12 M16 M20 M22 M24 M27 M30 M33 M36 Thread pitch
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BS EN 14399-3 Hexagon bolting assemblies for preloading (HR) Previously known as High Strength Friction Grip (HSFG) We are a manufacturer of UKCA & CE Marked pre-loaded fasteners to BS EN 14399. In our facility in Leeds, we can UKCA & CE Approve – assembly test to BS EN 14399-2 HR Assemblies from M12 to M36 up to grade 10.9. We are regularly independently assessed by Lloyd’s Register / LRQA, to make sure, that our company is fully compliant with BS EN 14399 requirements.
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Content with Hexagon nuts